Add Vitastor support

Makefile

@@ -24,7 +24,6 @@ endif
 
 PC_BIOS_FW_PURGE_LIST_IN = \
 	hppa-firmware.img \
-	hppa-firmware64.img \
 	openbios-ppc \
 	openbios-sparc32 \
 	openbios-sparc64 \
@@ -32,8 +31,7 @@ PC_BIOS_FW_PURGE_LIST_IN = \
 	s390-ccw.img \
 	s390-netboot.img \
 	u-boot.e500 \
-	.*[a-zA-Z0-9]\.dtb \
-	.*[a-zA-Z0-9]\.dts \
+	.*\.dtb \
 	qemu_vga.ndrv \
 	slof.bin \
 	opensbi-riscv.*-generic-fw_dynamic.bin \
@@ -58,7 +56,7 @@ $(BUILDDIR): submodule
 deb kvm: $(DEBS)
 $(DEB_DBG): $(DEB)
 $(DEB): $(BUILDDIR)
-	cd $(BUILDDIR); dpkg-buildpackage -b -us -uc
+	cd $(BUILDDIR); dpkg-buildpackage -b -us -uc -j32
 	lintian $(DEBS)
 
 sbuild: $(DSC)

debian/changelog

@@ -1,140 +1,8 @@
-pve-qemu-kvm (9.0.2-4) bookworm; urgency=medium
+pve-qemu-kvm (8.1.5-2+vitastor1) bookworm; urgency=medium
 
-  * async snapshot: ensure any dynamic vCPU-throttling applied for
-    auto-converge gets always disabled again after finishing the snapshot.
+  * Add Vitastor support
 
- -- Proxmox Support Team <support@proxmox.com>  Sun, 10 Nov 2024 11:23:09 +0100
-
-pve-qemu-kvm (9.0.2-3) bookworm; urgency=medium
-
-  * pick up fix for VirtIO PCI regressions
-
-  * pick up stable fixes for 9.0, including fixes for VirtIO-net, ARM and
-    x86(_64) emulation, CVEs to harden NBD server against malicious clients,
-    as well as a few others (VNC, physmem, Intel IOMMU, ...).
-
- -- Proxmox Support Team <support@proxmox.com>  Fri, 06 Sep 2024 16:21:42 +0200
-
-pve-qemu-kvm (9.0.2-2) bookworm; urgency=medium
-
-  * actually update submodule to QEMU 9.0.2. The previous release was still
-    based on 9.0.0 by mistake.
-
- -- Proxmox Support Team <support@proxmox.com>  Wed, 07 Aug 2024 10:16:01 +0200
-
-pve-qemu-kvm (9.0.2-1) bookworm; urgency=medium
-
-  * update submodule and patches to QEMU 9.0.2. While our version had most
-    stable fixes included already, there are new fixes for VirtIO and VGA
-    display screen blanking (#4786)
-
-  * backport fix for a regression with the LSI-53c895a controller and one for
-    the boot order getting ignored for USB storage
-
- -- Proxmox Support Team <support@proxmox.com>  Mon, 29 Jul 2024 18:59:40 +0200
-
-pve-qemu-kvm (9.0.0-6) bookworm; urgency=medium
-
-  * fix a regression in the zeroinit block driver that prevented importing and
-    cloning disks to RBD storages which are not using the krbd setting
-
- -- Proxmox Support Team <support@proxmox.com>  Mon, 08 Jul 2024 16:11:15 +0200
-
-pve-qemu-kvm (9.0.0-5) bookworm; urgency=medium
-
-  * backport fix for CVE-2024-4467 to prevent malicious qcow2 image files from
-    already causing bad effects if being queried via 'qemu-img info'. For
-    Proxmox VE, this is an additional safe guard, as currently it directly
-    creates and manages the qcow2 images used by VMs and does not allow
-    unprivileged users to import them
-
-  * fix #4726: code cleanup: avoid superfluous check in vma backup code
-
- -- Proxmox Support Team <support@proxmox.com>  Wed, 03 Jul 2024 13:13:35 +0200
-
-pve-qemu-kvm (9.0.0-4) bookworm; urgency=medium
-
-  * fix crash after saving a snapshot without including VM state when a VirtIO
-    block device with iothread is configured.
-
-  * fix edge case in error handling when opening a block device from PBS fails
-
-  * minor code cleanup in backup code
-
- -- Proxmox Support Team <support@proxmox.com>  Mon, 01 Jul 2024 11:26:11 +0200
-
-pve-qemu-kvm (9.0.0-3) bookworm; urgency=medium
-
-  * fix crash when doing resize after hotplugging a disk using io_uring
-
-  * fix some minor issues in software CPU emulation (i.e. non-KVM) for ARM and
-    x86(_64)
-
- -- Proxmox Support Team <support@proxmox.com>  Wed, 29 May 2024 15:55:44 +0200
-
-pve-qemu-kvm (9.0.0-2) bookworm; urgency=medium
-
-  * fix #5409: backup: fix copy-before-write timeout
-
-  * backup: improve error when copy-before-write fails for fleecing
-
-  * fix forwards and backwards migration with VirtIO-GPU display
-
-  * fix a regression in pflash device introduced in 8.2
-
-  * revert a commit for VirtIO PCI devices that turned out to cause more
-    potential security issues than what it fixed
-
-  * move compatibility flags for a new VirtIO-net feature to the correct
-    machine type. The feature was introduced in QEMU 8.2, but the
-    compatibility flags got added to machine version 8.0 instead of 8.1. This
-    breaks backwards migration with machine version 8.1 from a 8.2/9.0 binary
-    to an 8.1 binary, in cases where the guest kernel enables the feature
-    (e.g. Ubuntu 23.10).
-    While that breaks migration with machine version 8.1 from an unpatched to
-    a patched binary, Proxmox VE only ever had 8.2 on the test repository and
-    9.0 not yet in any public repository.
-
- -- Proxmox Support Team <support@proxmox.com>  Fri, 17 May 2024 17:04:52 +0200
-
-pve-qemu-kvm (9.0.0-1) bookworm; urgency=medium
-
-  * update submodule and patches to QEMU 9.0.0
-
- -- Proxmox Support Team <support@proxmox.com>  Mon, 29 Apr 2024 10:51:37 +0200
-
-pve-qemu-kvm (8.2.2-1) bookworm; urgency=medium
-
-  * update submodule and patches to QEMU 8.2.2
-
- -- Proxmox Support Team <support@proxmox.com>  Sat, 27 Apr 2024 12:44:30 +0200
-
-pve-qemu-kvm (8.1.5-5) bookworm; urgency=medium
-
-  * implement support for backup fleecing
-
- -- Proxmox Support Team <support@proxmox.com>  Thu, 11 Apr 2024 17:46:48 +0200
-
-pve-qemu-kvm (8.1.5-4) bookworm; urgency=medium
-
-  * fix live-import for certain kinds of VMDK images that rely on padding
-
-  * backup: avoid bubbling up first error if it's an ECANCELED one, as those
-    are often a result of cancling the job due to running into an actual
-    issue.
-
-  * backup: factor out & clean up gathering device info into helper
-
- -- Proxmox Support Team <support@proxmox.com>  Tue, 12 Mar 2024 14:08:40 +0100
-
-pve-qemu-kvm (8.1.5-3) bookworm; urgency=medium
-
-  * backport fix for potential deadlock during QMP stop command if the VM has
-    disks attached through VirtIO-Block and IO-Thread enabled
-
-  * fix #4507: add patch to automatically increase NOFILE soft limit
-
- -- Proxmox Support Team <support@proxmox.com>  Wed, 21 Feb 2024 20:11:23 +0100
+ -- Vitaliy Filippov <vitalif@yourcmc.ru>  Wed, 07 Feb 2024 01:11:00 +0300
 
 pve-qemu-kvm (8.1.5-2) bookworm; urgency=medium
 

debian/control

@@ -59,6 +59,7 @@ Depends: ceph-common (>= 0.48),
          libspice-server1 (>= 0.14.0~),
          libusb-1.0-0 (>= 1.0.17-1),
          libusbredirparser1 (>= 0.6-2),
+         vitastor-client (>= 0.9.4),
          libuuid1,
          ${misc:Depends},
          ${shlibs:Depends},

debian/patches/bitmap-mirror/0001-drive-mirror-add-support-for-sync-bitmap-mode-never.patch

@@ -27,18 +27,18 @@ Signed-off-by: Ma Haocong <mahaocong@didichuxing.com>
 Signed-off-by: John Snow <jsnow@redhat.com>
 Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
 Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
-[FE: rebased for 8.2.2]
+[FE: rebased for 8.1.1]
 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
- block/mirror.c                         | 99 ++++++++++++++++++++------
+ block/mirror.c                         | 98 +++++++++++++++++++++-----
  blockdev.c                             | 38 +++++++++-
  include/block/block_int-global-state.h |  4 +-
  qapi/block-core.json                   | 25 ++++++-
  tests/unit/test-block-iothread.c       |  4 +-
- 5 files changed, 142 insertions(+), 28 deletions(-)
+ 5 files changed, 142 insertions(+), 27 deletions(-)
 
 diff --git a/block/mirror.c b/block/mirror.c
-index 1bdce3b657..0c5c72df2e 100644
+index d3cacd1708..1ff42c8af1 100644
 --- a/block/mirror.c
 +++ b/block/mirror.c
 @@ -51,7 +51,7 @@ typedef struct MirrorBlockJob {
@@ -50,7 +50,7 @@ index 1bdce3b657..0c5c72df2e 100644
      BlockMirrorBackingMode backing_mode;
      /* Whether the target image requires explicit zero-initialization */
      bool zero_target;
-@@ -73,6 +73,8 @@ typedef struct MirrorBlockJob {
+@@ -65,6 +65,8 @@ typedef struct MirrorBlockJob {
      size_t buf_size;
      int64_t bdev_length;
      unsigned long *cow_bitmap;
@@ -59,9 +59,9 @@ index 1bdce3b657..0c5c72df2e 100644
      BdrvDirtyBitmap *dirty_bitmap;
      BdrvDirtyBitmapIter *dbi;
      uint8_t *buf;
-@@ -722,7 +724,8 @@ static int mirror_exit_common(Job *job)
+@@ -705,7 +707,8 @@ static int mirror_exit_common(Job *job)
+     bdrv_child_refresh_perms(mirror_top_bs, mirror_top_bs->backing,
                               &error_abort);
- 
      if (!abort && s->backing_mode == MIRROR_SOURCE_BACKING_CHAIN) {
 -        BlockDriverState *backing = s->is_none_mode ? src : s->base;
 +        BlockDriverState *backing;
@@ -69,7 +69,7 @@ index 1bdce3b657..0c5c72df2e 100644
          BlockDriverState *unfiltered_target = bdrv_skip_filters(target_bs);
  
          if (bdrv_cow_bs(unfiltered_target) != backing) {
-@@ -819,6 +822,16 @@ static void mirror_abort(Job *job)
+@@ -809,6 +812,16 @@ static void mirror_abort(Job *job)
      assert(ret == 0);
  }
  
@@ -86,7 +86,7 @@ index 1bdce3b657..0c5c72df2e 100644
  static void coroutine_fn mirror_throttle(MirrorBlockJob *s)
  {
      int64_t now = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
-@@ -1015,7 +1028,8 @@ static int coroutine_fn mirror_run(Job *job, Error **errp)
+@@ -997,7 +1010,8 @@ static int coroutine_fn mirror_run(Job *job, Error **errp)
      mirror_free_init(s);
  
      s->last_pause_ns = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
@@ -96,7 +96,7 @@ index 1bdce3b657..0c5c72df2e 100644
          ret = mirror_dirty_init(s);
          if (ret < 0 || job_is_cancelled(&s->common.job)) {
              goto immediate_exit;
-@@ -1304,6 +1318,7 @@ static const BlockJobDriver mirror_job_driver = {
+@@ -1251,6 +1265,7 @@ static const BlockJobDriver mirror_job_driver = {
          .run                    = mirror_run,
          .prepare                = mirror_prepare,
          .abort                  = mirror_abort,
@@ -104,7 +104,7 @@ index 1bdce3b657..0c5c72df2e 100644
          .pause                  = mirror_pause,
          .complete               = mirror_complete,
          .cancel                 = mirror_cancel,
-@@ -1322,6 +1337,7 @@ static const BlockJobDriver commit_active_job_driver = {
+@@ -1267,6 +1282,7 @@ static const BlockJobDriver commit_active_job_driver = {
          .run                    = mirror_run,
          .prepare                = mirror_prepare,
          .abort                  = mirror_abort,
@@ -112,7 +112,7 @@ index 1bdce3b657..0c5c72df2e 100644
          .pause                  = mirror_pause,
          .complete               = mirror_complete,
          .cancel                 = commit_active_cancel,
-@@ -1714,7 +1730,10 @@ static BlockJob *mirror_start_job(
+@@ -1658,7 +1674,10 @@ static BlockJob *mirror_start_job(
                               BlockCompletionFunc *cb,
                               void *opaque,
                               const BlockJobDriver *driver,
@@ -124,9 +124,9 @@ index 1bdce3b657..0c5c72df2e 100644
                               bool auto_complete, const char *filter_node_name,
                               bool is_mirror, MirrorCopyMode copy_mode,
                               Error **errp)
-@@ -1728,10 +1747,39 @@ static BlockJob *mirror_start_job(
- 
-     GLOBAL_STATE_CODE();
+@@ -1670,10 +1689,39 @@ static BlockJob *mirror_start_job(
+     uint64_t target_perms, target_shared_perms;
+     int ret;
  
 -    if (granularity == 0) {
 -        granularity = bdrv_get_default_bitmap_granularity(target);
@@ -166,7 +166,7 @@ index 1bdce3b657..0c5c72df2e 100644
      assert(is_power_of_2(granularity));
  
      if (buf_size < 0) {
-@@ -1871,7 +1919,9 @@ static BlockJob *mirror_start_job(
+@@ -1804,7 +1852,9 @@ static BlockJob *mirror_start_job(
      s->replaces = g_strdup(replaces);
      s->on_source_error = on_source_error;
      s->on_target_error = on_target_error;
@@ -176,10 +176,10 @@ index 1bdce3b657..0c5c72df2e 100644
 +    s->bitmap_mode = bitmap_mode;
      s->backing_mode = backing_mode;
      s->zero_target = zero_target;
-     qatomic_set(&s->copy_mode, copy_mode);
-@@ -1897,6 +1947,18 @@ static BlockJob *mirror_start_job(
-      */
-     bdrv_disable_dirty_bitmap(s->dirty_bitmap);
+     s->copy_mode = copy_mode;
+@@ -1825,6 +1875,18 @@ static BlockJob *mirror_start_job(
+         bdrv_disable_dirty_bitmap(s->dirty_bitmap);
+     }
  
 +    if (s->sync_bitmap) {
 +        bdrv_dirty_bitmap_set_busy(s->sync_bitmap, true);
@@ -193,10 +193,10 @@ index 1bdce3b657..0c5c72df2e 100644
 +        }
 +    }
 +
-     bdrv_graph_wrlock();
      ret = block_job_add_bdrv(&s->common, "source", bs, 0,
                               BLK_PERM_WRITE_UNCHANGED | BLK_PERM_WRITE |
-@@ -1979,6 +2041,9 @@ fail:
+                              BLK_PERM_CONSISTENT_READ,
+@@ -1902,6 +1964,9 @@ fail:
          if (s->dirty_bitmap) {
              bdrv_release_dirty_bitmap(s->dirty_bitmap);
          }
@@ -206,7 +206,7 @@ index 1bdce3b657..0c5c72df2e 100644
          job_early_fail(&s->common.job);
      }
  
-@@ -2001,35 +2066,28 @@ void mirror_start(const char *job_id, BlockDriverState *bs,
+@@ -1919,31 +1984,25 @@ void mirror_start(const char *job_id, BlockDriverState *bs,
                    BlockDriverState *target, const char *replaces,
                    int creation_flags, int64_t speed,
                    uint32_t granularity, int64_t buf_size,
@@ -231,12 +231,8 @@ index 1bdce3b657..0c5c72df2e 100644
 -                   MirrorSyncMode_str(mode));
 -        return;
 -    }
--
-     bdrv_graph_rdlock_main_loop();
 -    is_none_mode = mode == MIRROR_SYNC_MODE_NONE;
      base = mode == MIRROR_SYNC_MODE_TOP ? bdrv_backing_chain_next(bs) : NULL;
-     bdrv_graph_rdunlock_main_loop();
- 
      mirror_start_job(job_id, bs, creation_flags, target, replaces,
                       speed, granularity, buf_size, backing_mode, zero_target,
                       on_source_error, on_target_error, unmap, NULL, NULL,
@@ -247,7 +243,7 @@ index 1bdce3b657..0c5c72df2e 100644
  }
  
  BlockJob *commit_active_start(const char *job_id, BlockDriverState *bs,
-@@ -2056,7 +2114,8 @@ BlockJob *commit_active_start(const char *job_id, BlockDriverState *bs,
+@@ -1970,7 +2029,8 @@ BlockJob *commit_active_start(const char *job_id, BlockDriverState *bs,
                       job_id, bs, creation_flags, base, NULL, speed, 0, 0,
                       MIRROR_LEAVE_BACKING_CHAIN, false,
                       on_error, on_error, true, cb, opaque,
@@ -258,10 +254,10 @@ index 1bdce3b657..0c5c72df2e 100644
                       errp);
      if (!job) {
 diff --git a/blockdev.c b/blockdev.c
-index 4c33c3f5f0..f3e508a6a7 100644
+index c28462a633..a402fa4bf7 100644
 --- a/blockdev.c
 +++ b/blockdev.c
-@@ -2776,6 +2776,9 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
+@@ -2849,6 +2849,9 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
                                     BlockDriverState *target,
                                     const char *replaces,
                                     enum MirrorSyncMode sync,
@@ -271,7 +267,7 @@ index 4c33c3f5f0..f3e508a6a7 100644
                                     BlockMirrorBackingMode backing_mode,
                                     bool zero_target,
                                     bool has_speed, int64_t speed,
-@@ -2794,6 +2797,7 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
+@@ -2867,6 +2870,7 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
  {
      BlockDriverState *unfiltered_bs;
      int job_flags = JOB_DEFAULT;
@@ -279,7 +275,7 @@ index 4c33c3f5f0..f3e508a6a7 100644
  
      GLOBAL_STATE_CODE();
      GRAPH_RDLOCK_GUARD_MAINLOOP();
-@@ -2848,6 +2852,29 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
+@@ -2921,6 +2925,29 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
          sync = MIRROR_SYNC_MODE_FULL;
      }
  
@@ -309,7 +305,7 @@ index 4c33c3f5f0..f3e508a6a7 100644
      if (!replaces) {
          /* We want to mirror from @bs, but keep implicit filters on top */
          unfiltered_bs = bdrv_skip_implicit_filters(bs);
-@@ -2889,8 +2916,8 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
+@@ -2966,8 +2993,8 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
       * and will allow to check whether the node still exist at mirror completion
       */
      mirror_start(job_id, bs, target,
@@ -320,7 +316,7 @@ index 4c33c3f5f0..f3e508a6a7 100644
                   on_source_error, on_target_error, unmap, filter_node_name,
                   copy_mode, errp);
  }
-@@ -3034,6 +3061,8 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp)
+@@ -3115,6 +3142,8 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp)
  
      blockdev_mirror_common(arg->job_id, bs, target_bs,
                             arg->replaces, arg->sync,
@@ -329,7 +325,7 @@ index 4c33c3f5f0..f3e508a6a7 100644
                             backing_mode, zero_target,
                             arg->has_speed, arg->speed,
                             arg->has_granularity, arg->granularity,
-@@ -3053,6 +3082,8 @@ void qmp_blockdev_mirror(const char *job_id,
+@@ -3136,6 +3165,8 @@ void qmp_blockdev_mirror(const char *job_id,
                           const char *device, const char *target,
                           const char *replaces,
                           MirrorSyncMode sync,
@@ -338,7 +334,7 @@ index 4c33c3f5f0..f3e508a6a7 100644
                           bool has_speed, int64_t speed,
                           bool has_granularity, uint32_t granularity,
                           bool has_buf_size, int64_t buf_size,
-@@ -3093,7 +3124,8 @@ void qmp_blockdev_mirror(const char *job_id,
+@@ -3184,7 +3215,8 @@ void qmp_blockdev_mirror(const char *job_id,
      }
  
      blockdev_mirror_common(job_id, bs, target_bs,
@@ -349,10 +345,10 @@ index 4c33c3f5f0..f3e508a6a7 100644
                             has_granularity, granularity,
                             has_buf_size, buf_size,
 diff --git a/include/block/block_int-global-state.h b/include/block/block_int-global-state.h
-index eb2d92a226..f0c642b194 100644
+index da5fb31089..32f0f9858a 100644
 --- a/include/block/block_int-global-state.h
 +++ b/include/block/block_int-global-state.h
-@@ -158,7 +158,9 @@ void mirror_start(const char *job_id, BlockDriverState *bs,
+@@ -152,7 +152,9 @@ void mirror_start(const char *job_id, BlockDriverState *bs,
                    BlockDriverState *target, const char *replaces,
                    int creation_flags, int64_t speed,
                    uint32_t granularity, int64_t buf_size,
@@ -364,10 +360,10 @@ index eb2d92a226..f0c642b194 100644
                    BlockdevOnError on_source_error,
                    BlockdevOnError on_target_error,
 diff --git a/qapi/block-core.json b/qapi/block-core.json
-index b179d65520..905da8be72 100644
+index bca1a0c372..a5cea82139 100644
 --- a/qapi/block-core.json
 +++ b/qapi/block-core.json
-@@ -2174,6 +2174,15 @@
+@@ -2145,6 +2145,15 @@
  #     destination (all the disk, only the sectors allocated in the
  #     topmost image, or only new I/O).
  #
@@ -383,7 +379,7 @@ index b179d65520..905da8be72 100644
  # @granularity: granularity of the dirty bitmap, default is 64K if the
  #     image format doesn't have clusters, 4K if the clusters are
  #     smaller than that, else the cluster size.  Must be a power of 2
-@@ -2216,7 +2225,9 @@
+@@ -2187,7 +2196,9 @@
  { 'struct': 'DriveMirror',
    'data': { '*job-id': 'str', 'device': 'str', 'target': 'str',
              '*format': 'str', '*node-name': 'str', '*replaces': 'str',
@@ -394,7 +390,7 @@ index b179d65520..905da8be72 100644
              '*speed': 'int', '*granularity': 'uint32',
              '*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
              '*on-target-error': 'BlockdevOnError',
-@@ -2496,6 +2507,15 @@
+@@ -2471,6 +2482,15 @@
  #     destination (all the disk, only the sectors allocated in the
  #     topmost image, or only new I/O).
  #
@@ -410,7 +406,7 @@ index b179d65520..905da8be72 100644
  # @granularity: granularity of the dirty bitmap, default is 64K if the
  #     image format doesn't have clusters, 4K if the clusters are
  #     smaller than that, else the cluster size.  Must be a power of 2
-@@ -2544,7 +2564,8 @@
+@@ -2521,7 +2541,8 @@
  { 'command': 'blockdev-mirror',
    'data': { '*job-id': 'str', 'device': 'str', 'target': 'str',
              '*replaces': 'str',
@@ -421,10 +417,10 @@ index b179d65520..905da8be72 100644
              '*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
              '*on-target-error': 'BlockdevOnError',
 diff --git a/tests/unit/test-block-iothread.c b/tests/unit/test-block-iothread.c
-index 3766d5de6b..afa44cbd34 100644
+index d727a5fee8..8a34aa2328 100644
 --- a/tests/unit/test-block-iothread.c
 +++ b/tests/unit/test-block-iothread.c
-@@ -755,8 +755,8 @@ static void test_propagate_mirror(void)
+@@ -757,8 +757,8 @@ static void test_propagate_mirror(void)
  
      /* Start a mirror job */
      mirror_start("job0", src, target, NULL, JOB_DEFAULT, 0, 0, 0,
@@ -434,4 +430,4 @@ index 3766d5de6b..afa44cbd34 100644
 +                 false, BLOCKDEV_ON_ERROR_REPORT, BLOCKDEV_ON_ERROR_REPORT,
                   false, "filter_node", MIRROR_COPY_MODE_BACKGROUND,
                   &error_abort);
- 
+     WITH_JOB_LOCK_GUARD() {

debian/patches/bitmap-mirror/0002-drive-mirror-add-support-for-conditional-and-always-.patch

@@ -24,10 +24,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 18 insertions(+), 6 deletions(-)
 
 diff --git a/block/mirror.c b/block/mirror.c
-index 0c5c72df2e..37fee3fa25 100644
+index 1ff42c8af1..11b8a8e959 100644
 --- a/block/mirror.c
 +++ b/block/mirror.c
-@@ -693,8 +693,6 @@ static int mirror_exit_common(Job *job)
+@@ -682,8 +682,6 @@ static int mirror_exit_common(Job *job)
          bdrv_unfreeze_backing_chain(mirror_top_bs, target_bs);
      }
  
@@ -36,9 +36,9 @@ index 0c5c72df2e..37fee3fa25 100644
      /* Make sure that the source BDS doesn't go away during bdrv_replace_node,
       * before we can call bdrv_drained_end */
      bdrv_ref(src);
-@@ -800,6 +798,18 @@ static int mirror_exit_common(Job *job)
-     bdrv_drained_end(target_bs);
-     bdrv_unref(target_bs);
+@@ -788,6 +786,18 @@ static int mirror_exit_common(Job *job)
+     block_job_remove_all_bdrv(bjob);
+     bdrv_replace_node(mirror_top_bs, mirror_top_bs->backing->bs, &error_abort);
  
 +    if (s->sync_bitmap) {
 +        if (s->bitmap_mode == BITMAP_SYNC_MODE_ALWAYS ||
@@ -55,7 +55,7 @@ index 0c5c72df2e..37fee3fa25 100644
      bs_opaque->job = NULL;
  
      bdrv_drained_end(src);
-@@ -1757,10 +1767,6 @@ static BlockJob *mirror_start_job(
+@@ -1699,10 +1709,6 @@ static BlockJob *mirror_start_job(
                         " sync mode",
                         MirrorSyncMode_str(sync_mode));
              return NULL;
@@ -66,7 +66,7 @@ index 0c5c72df2e..37fee3fa25 100644
          }
      } else if (bitmap) {
          error_setg(errp,
-@@ -1777,6 +1783,12 @@ static BlockJob *mirror_start_job(
+@@ -1719,6 +1725,12 @@ static BlockJob *mirror_start_job(
              return NULL;
          }
          granularity = bdrv_dirty_bitmap_granularity(bitmap);

debian/patches/bitmap-mirror/0003-mirror-add-check-for-bitmap-mode-without-bitmap.patch

@@ -16,10 +16,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 3 insertions(+)
 
 diff --git a/blockdev.c b/blockdev.c
-index f3e508a6a7..37b8437f3e 100644
+index a402fa4bf7..01b0ab0549 100644
 --- a/blockdev.c
 +++ b/blockdev.c
-@@ -2873,6 +2873,9 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
+@@ -2946,6 +2946,9 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
          if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_ALLOW_RO, errp)) {
              return;
          }

debian/patches/bitmap-mirror/0004-mirror-switch-to-bdrv_dirty_bitmap_merge_internal.patch

@@ -16,10 +16,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 4 insertions(+), 7 deletions(-)
 
 diff --git a/block/mirror.c b/block/mirror.c
-index 37fee3fa25..6b3cce1007 100644
+index 11b8a8e959..00f2665ca4 100644
 --- a/block/mirror.c
 +++ b/block/mirror.c
-@@ -804,8 +804,8 @@ static int mirror_exit_common(Job *job)
+@@ -792,8 +792,8 @@ static int mirror_exit_common(Job *job)
               job->ret == 0 && ret == 0)) {
              /* Success; synchronize copy back to sync. */
              bdrv_clear_dirty_bitmap(s->sync_bitmap, NULL);
@@ -30,7 +30,7 @@ index 37fee3fa25..6b3cce1007 100644
          }
      }
      bdrv_release_dirty_bitmap(s->dirty_bitmap);
-@@ -1964,11 +1964,8 @@ static BlockJob *mirror_start_job(
+@@ -1892,11 +1892,8 @@ static BlockJob *mirror_start_job(
      }
  
      if (s->sync_mode == MIRROR_SYNC_MODE_BITMAP) {
@@ -43,4 +43,4 @@ index 37fee3fa25..6b3cce1007 100644
 +                                         NULL, true);
      }
  
-     bdrv_graph_wrlock();
+     ret = block_job_add_bdrv(&s->common, "source", bs, 0,

debian/patches/bitmap-mirror/0006-mirror-move-some-checks-to-qmp.patch

@@ -12,7 +12,7 @@ uniform w.r.t. backup block jobs.
 
 Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
 Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
-[FE: rebase for 8.2.2]
+[FE: rebase for 8.0]
 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
  block/mirror.c             | 28 +++------------
@@ -21,12 +21,12 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  3 files changed, 70 insertions(+), 59 deletions(-)
 
 diff --git a/block/mirror.c b/block/mirror.c
-index 6b3cce1007..2f1223852b 100644
+index 00f2665ca4..60cf574de5 100644
 --- a/block/mirror.c
 +++ b/block/mirror.c
-@@ -1757,31 +1757,13 @@ static BlockJob *mirror_start_job(
- 
-     GLOBAL_STATE_CODE();
+@@ -1699,31 +1699,13 @@ static BlockJob *mirror_start_job(
+     uint64_t target_perms, target_shared_perms;
+     int ret;
  
 -    if (sync_mode == MIRROR_SYNC_MODE_INCREMENTAL) {
 -        error_setg(errp, "Sync mode '%s' not supported",
@@ -62,10 +62,10 @@ index 6b3cce1007..2f1223852b 100644
  
          if (bitmap_mode != BITMAP_SYNC_MODE_NEVER) {
 diff --git a/blockdev.c b/blockdev.c
-index 37b8437f3e..ed8198f351 100644
+index 01b0ab0549..cd5f205ad1 100644
 --- a/blockdev.c
 +++ b/blockdev.c
-@@ -2852,7 +2852,36 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
+@@ -2925,7 +2925,36 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
          sync = MIRROR_SYNC_MODE_FULL;
      }
  

debian/patches/extra/0001-monitor-qmp-fix-race-with-clients-disconnecting-earl.patch

@@ -78,7 +78,7 @@ index 252de85681..8db28f9272 100644
  
  /**
 diff --git a/monitor/monitor.c b/monitor/monitor.c
-index 01ede1babd..5681bca346 100644
+index dc352f9e9d..56e1307014 100644
 --- a/monitor/monitor.c
 +++ b/monitor/monitor.c
 @@ -117,6 +117,21 @@ bool monitor_cur_is_qmp(void)

debian/patches/extra/0002-scsi-megasas-Internal-cdbs-have-16-byte-length.patch

@@ -22,7 +22,7 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  1 file changed, 2 insertions(+), 12 deletions(-)
 
 diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
-index 2d0c607177..97e51733af 100644
+index 32c70c9e99..984b6a3145 100644
 --- a/hw/scsi/megasas.c
 +++ b/hw/scsi/megasas.c
 @@ -1781,7 +1781,7 @@ static int megasas_handle_io(MegasasState *s, MegasasCmd *cmd, int frame_cmd)

debian/patches/extra/0003-ide-avoid-potential-deadlock-when-draining-during-tr.patch

@@ -55,10 +55,10 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  1 file changed, 6 insertions(+), 6 deletions(-)
 
 diff --git a/hw/ide/core.c b/hw/ide/core.c
-index e8cb2dac92..3b21acf651 100644
+index c3508acbb1..289347af58 100644
 --- a/hw/ide/core.c
 +++ b/hw/ide/core.c
-@@ -456,7 +456,7 @@ static void ide_trim_bh_cb(void *opaque)
+@@ -444,7 +444,7 @@ static void ide_trim_bh_cb(void *opaque)
      iocb->bh = NULL;
      qemu_aio_unref(iocb);
  
@@ -67,7 +67,7 @@ index e8cb2dac92..3b21acf651 100644
      blk_dec_in_flight(blk);
  }
  
-@@ -516,6 +516,8 @@ static void ide_issue_trim_cb(void *opaque, int ret)
+@@ -504,6 +504,8 @@ static void ide_issue_trim_cb(void *opaque, int ret)
  done:
      iocb->aiocb = NULL;
      if (iocb->bh) {
@@ -76,7 +76,7 @@ index e8cb2dac92..3b21acf651 100644
          replay_bh_schedule_event(iocb->bh);
      }
  }
-@@ -528,9 +530,6 @@ BlockAIOCB *ide_issue_trim(
+@@ -516,9 +518,6 @@ BlockAIOCB *ide_issue_trim(
      IDEDevice *dev = s->unit ? s->bus->slave : s->bus->master;
      TrimAIOCB *iocb;
  
@@ -86,7 +86,7 @@ index e8cb2dac92..3b21acf651 100644
      iocb = blk_aio_get(&trim_aiocb_info, s->blk, cb, cb_opaque);
      iocb->s = s;
      iocb->bh = qemu_bh_new_guarded(ide_trim_bh_cb, iocb,
-@@ -754,8 +753,9 @@ void ide_cancel_dma_sync(IDEState *s)
+@@ -742,8 +741,9 @@ void ide_cancel_dma_sync(IDEState *s)
       */
      if (s->bus->dma->aiocb) {
          trace_ide_cancel_dma_sync_remaining();

debian/patches/extra/0004-migration-block-dirty-bitmap-fix-loading-bitmap-when.patch

@@ -0,0 +1,48 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Fiona Ebner <f.ebner@proxmox.com>
+Date: Fri, 28 Jul 2023 10:47:48 +0200
+Subject: [PATCH] migration/block-dirty-bitmap: fix loading bitmap when there
+ is an iothread
+
+The bdrv_create_dirty_bitmap() function (which is also called by
+bdrv_dirty_bitmap_create_successor()) uses bdrv_getlength(bs). This is
+a wrapper around a coroutine, and thus uses bdrv_poll_co(). Polling
+tries to release the AioContext which will trigger an assert() if it
+hasn't been acquired before.
+
+The issue does not happen for migration, because there we are in a
+coroutine already, so the wrapper will just call bdrv_co_getlength()
+directly without polling.
+
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ migration/block-dirty-bitmap.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c
+index 032fc5f405..e1ae3b7316 100644
+--- a/migration/block-dirty-bitmap.c
++++ b/migration/block-dirty-bitmap.c
+@@ -805,8 +805,11 @@ static int dirty_bitmap_load_start(QEMUFile *f, DBMLoadState *s)
+                      "destination", bdrv_dirty_bitmap_name(s->bitmap));
+         return -EINVAL;
+     } else {
++        AioContext *ctx = bdrv_get_aio_context(s->bs);
++        aio_context_acquire(ctx);
+         s->bitmap = bdrv_create_dirty_bitmap(s->bs, granularity,
+                                              s->bitmap_name, &local_err);
++        aio_context_release(ctx);
+         if (!s->bitmap) {
+             error_report_err(local_err);
+             return -EINVAL;
+@@ -833,7 +836,10 @@ static int dirty_bitmap_load_start(QEMUFile *f, DBMLoadState *s)
+ 
+     bdrv_disable_dirty_bitmap(s->bitmap);
+     if (flags & DIRTY_BITMAP_MIG_START_FLAG_ENABLED) {
++        AioContext *ctx = bdrv_get_aio_context(s->bs);
++        aio_context_acquire(ctx);
+         bdrv_dirty_bitmap_create_successor(s->bitmap, &local_err);
++        aio_context_release(ctx);
+         if (local_err) {
+             error_report_err(local_err);
+             return -EINVAL;

debian/patches/extra/0005-Revert-Revert-graph-lock-Disable-locking-for-now.patch

@@ -0,0 +1,140 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Fiona Ebner <f.ebner@proxmox.com>
+Date: Thu, 28 Sep 2023 10:07:03 +0200
+Subject: [PATCH] Revert "Revert "graph-lock: Disable locking for now""
+
+This reverts commit 3cce22defb4b0e47cf135444e30cc673cff5ebad.
+
+There are still some issues with graph locking, e.g. deadlocks during
+backup canceling [0]. Because the AioContext locks still exist, it
+should be safe to disable locking again.
+
+From the original 80fc5d2600 ("graph-lock: Disable locking for now"):
+
+> We don't currently rely on graph locking yet. It is supposed to replace
+> the AioContext lock eventually to enable multiqueue support, but as long
+> as we still have the AioContext lock, it is sufficient without the graph
+> lock. Once the AioContext lock goes away, the deadlock doesn't exist any
+> more either and this commit can be reverted. (Of course, it can also be
+> reverted while the AioContext lock still exists if the callers have been
+> fixed.)
+
+[0]: https://lists.nongnu.org/archive/html/qemu-devel/2023-09/msg00729.html
+
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ block/graph-lock.c | 24 ++++++++++++++++++++++++
+ 1 file changed, 24 insertions(+)
+
+diff --git a/block/graph-lock.c b/block/graph-lock.c
+index 5e66f01ae8..5c2873262a 100644
+--- a/block/graph-lock.c
++++ b/block/graph-lock.c
+@@ -30,8 +30,10 @@ BdrvGraphLock graph_lock;
+ /* Protects the list of aiocontext and orphaned_reader_count */
+ static QemuMutex aio_context_list_lock;
+ 
++#if 0
+ /* Written and read with atomic operations. */
+ static int has_writer;
++#endif
+ 
+ /*
+  * A reader coroutine could move from an AioContext to another.
+@@ -88,6 +90,7 @@ void unregister_aiocontext(AioContext *ctx)
+     g_free(ctx->bdrv_graph);
+ }
+ 
++#if 0
+ static uint32_t reader_count(void)
+ {
+     BdrvGraphRWlock *brdv_graph;
+@@ -105,12 +108,19 @@ static uint32_t reader_count(void)
+     assert((int32_t)rd >= 0);
+     return rd;
+ }
++#endif
+ 
+ void bdrv_graph_wrlock(BlockDriverState *bs)
+ {
++#if 0
+     AioContext *ctx = NULL;
+ 
+     GLOBAL_STATE_CODE();
++    /*
++     * TODO Some callers hold an AioContext lock when this is called, which
++     * causes deadlocks. Reenable once the AioContext locking is cleaned up (or
++     * AioContext locks are gone).
++     */
+     assert(!qatomic_read(&has_writer));
+ 
+     /*
+@@ -158,11 +168,13 @@ void bdrv_graph_wrlock(BlockDriverState *bs)
+     if (ctx) {
+         aio_context_acquire(bdrv_get_aio_context(bs));
+     }
++#endif
+ }
+ 
+ void bdrv_graph_wrunlock(void)
+ {
+     GLOBAL_STATE_CODE();
++#if 0
+     QEMU_LOCK_GUARD(&aio_context_list_lock);
+     assert(qatomic_read(&has_writer));
+ 
+@@ -174,10 +186,13 @@ void bdrv_graph_wrunlock(void)
+ 
+     /* Wake up all coroutine that are waiting to read the graph */
+     qemu_co_enter_all(&reader_queue, &aio_context_list_lock);
++#endif
+ }
+ 
+ void coroutine_fn bdrv_graph_co_rdlock(void)
+ {
++    /* TODO Reenable when wrlock is reenabled */
++#if 0
+     BdrvGraphRWlock *bdrv_graph;
+     bdrv_graph = qemu_get_current_aio_context()->bdrv_graph;
+ 
+@@ -237,10 +252,12 @@ void coroutine_fn bdrv_graph_co_rdlock(void)
+             qemu_co_queue_wait(&reader_queue, &aio_context_list_lock);
+         }
+     }
++#endif
+ }
+ 
+ void coroutine_fn bdrv_graph_co_rdunlock(void)
+ {
++#if 0
+     BdrvGraphRWlock *bdrv_graph;
+     bdrv_graph = qemu_get_current_aio_context()->bdrv_graph;
+ 
+@@ -258,6 +275,7 @@ void coroutine_fn bdrv_graph_co_rdunlock(void)
+     if (qatomic_read(&has_writer)) {
+         aio_wait_kick();
+     }
++#endif
+ }
+ 
+ void bdrv_graph_rdlock_main_loop(void)
+@@ -275,13 +293,19 @@ void bdrv_graph_rdunlock_main_loop(void)
+ void assert_bdrv_graph_readable(void)
+ {
+     /* reader_count() is slow due to aio_context_list_lock lock contention */
++    /* TODO Reenable when wrlock is reenabled */
++#if 0
+ #ifdef CONFIG_DEBUG_GRAPH_LOCK
+     assert(qemu_in_main_thread() || reader_count());
+ #endif
++#endif
+ }
+ 
+ void assert_bdrv_graph_writable(void)
+ {
+     assert(qemu_in_main_thread());
++    /* TODO Reenable when wrlock is reenabled */
++#if 0
+     assert(qatomic_read(&has_writer));
++#endif
+ }

debian/patches/extra/0005-block-copy-before-write-use-uint64_t-for-timeout-in-.patch

@@ -1,35 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Fiona Ebner <f.ebner@proxmox.com>
-Date: Mon, 29 Apr 2024 15:41:11 +0200
-Subject: [PATCH] block/copy-before-write: use uint64_t for timeout in
- nanoseconds
-
-rather than the uint32_t for which the maximum is slightly more than 4
-seconds and larger values would overflow. The QAPI interface allows
-specifying the number of seconds, so only values 0 to 4 are safe right
-now, other values lead to a much lower timeout than a user expects.
-
-The block_copy() call where this is used already takes a uint64_t for
-the timeout, so no change required there.
-
-Fixes: 6db7fd1ca9 ("block/copy-before-write: implement cbw-timeout option")
-Reported-by: Friedrich Weber <f.weber@proxmox.com>
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Tested-by: Friedrich Weber <f.weber@proxmox.com>
----
- block/copy-before-write.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/block/copy-before-write.c b/block/copy-before-write.c
-index 8aba27a71d..026fa9840f 100644
---- a/block/copy-before-write.c
-+++ b/block/copy-before-write.c
-@@ -43,7 +43,7 @@ typedef struct BDRVCopyBeforeWriteState {
-     BlockCopyState *bcs;
-     BdrvChild *target;
-     OnCbwError on_cbw_error;
--    uint32_t cbw_timeout_ns;
-+    uint64_t cbw_timeout_ns;
- 
-     /*
-      * @lock: protects access to @access_bitmap, @done_bitmap and

debian/patches/extra/0006-block-copy-before-write-fix-permission.patch

@@ -1,55 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Date: Thu, 11 Apr 2024 11:29:22 +0200
-Subject: [PATCH] block/copy-before-write: fix permission
-
-In case when source node does not have any parents, the condition still
-works as required: backup job do create the parent by
-
-  block_job_create -> block_job_add_bdrv -> bdrv_root_attach_child
-
-Still, in this case checking @perm variable doesn't work, as backup job
-creates the root blk with empty permissions (as it rely on CBW filter
-to require correct permissions and don't want to create extra
-conflicts).
-
-So, we should not check @perm.
-
-The hack may be dropped entirely when transactional insertion of
-filter (when we don't try to recalculate permissions in intermediate
-state, when filter does conflict with original parent of the source
-node) merged (old big series
-"[PATCH v5 00/45] Transactional block-graph modifying API"[1] and it's
-current in-flight part is "[PATCH v8 0/7] blockdev-replace"[2])
-
-[1] https://patchew.org/QEMU/20220330212902.590099-1-vsementsov@openvz.org/
-[2] https://patchew.org/QEMU/20231017184444.932733-1-vsementsov@yandex-team.ru/
-
-Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
----
- block/copy-before-write.c | 10 +++++++---
- 1 file changed, 7 insertions(+), 3 deletions(-)
-
-diff --git a/block/copy-before-write.c b/block/copy-before-write.c
-index 026fa9840f..5a9456d426 100644
---- a/block/copy-before-write.c
-+++ b/block/copy-before-write.c
-@@ -364,9 +364,13 @@ cbw_child_perm(BlockDriverState *bs, BdrvChild *c, BdrvChildRole role,
-                            perm, shared, nperm, nshared);
- 
-         if (!QLIST_EMPTY(&bs->parents)) {
--            if (perm & BLK_PERM_WRITE) {
--                *nperm = *nperm | BLK_PERM_CONSISTENT_READ;
--            }
-+            /*
-+             * Note, that source child may be shared with backup job. Backup job
-+             * does create own blk parent on copy-before-write node, so this
-+             * works even if source node does not have any parents before backup
-+             * start
-+             */
-+            *nperm = *nperm | BLK_PERM_CONSISTENT_READ;
-             *nshared &= ~(BLK_PERM_WRITE | BLK_PERM_RESIZE);
-         }
-     }

debian/patches/extra/0006-migration-states-workaround-snapshot-performance-reg.patch

@@ -0,0 +1,57 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Fiona Ebner <f.ebner@proxmox.com>
+Date: Thu, 28 Sep 2023 11:19:14 +0200
+Subject: [PATCH] migration states: workaround snapshot performance regression
+
+Commit 813cd616 ("migration: Use migration_transferred_bytes() to
+calculate rate_limit") introduced a prohibitive performance regression
+when taking a snapshot [0]. The reason turns out to be the flushing
+done by migration_transferred_bytes()
+
+Just use a _noflush version of the relevant function as a workaround
+until upstream fixes the issue. This is inspired by a not-applied
+upstream series [1], but doing the very minimum to avoid the
+regression.
+
+[0]: https://gitlab.com/qemu-project/qemu/-/issues/1821
+[1]: https://lists.nongnu.org/archive/html/qemu-devel/2023-05/msg07708.html
+
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ migration/migration-stats.c | 16 +++++++++++++++-
+ 1 file changed, 15 insertions(+), 1 deletion(-)
+
+diff --git a/migration/migration-stats.c b/migration/migration-stats.c
+index 095d6d75bb..8073c8ebaa 100644
+--- a/migration/migration-stats.c
++++ b/migration/migration-stats.c
+@@ -18,6 +18,20 @@
+ 
+ MigrationAtomicStats mig_stats;
+ 
++/*
++ * Same as migration_transferred_bytes below, but using the _noflush
++ * variant of qemu_file_transferred() to avoid a performance
++ * regression in migration_rate_exceeded().
++ */
++static uint64_t migration_transferred_bytes_noflush(QEMUFile *f)
++{
++    uint64_t multifd = stat64_get(&mig_stats.multifd_bytes);
++    uint64_t qemu_file = qemu_file_transferred_noflush(f);
++
++    trace_migration_transferred_bytes(qemu_file, multifd);
++    return qemu_file + multifd;
++}
++
+ bool migration_rate_exceeded(QEMUFile *f)
+ {
+     if (qemu_file_get_error(f)) {
+@@ -25,7 +39,7 @@ bool migration_rate_exceeded(QEMUFile *f)
+     }
+ 
+     uint64_t rate_limit_start = stat64_get(&mig_stats.rate_limit_start);
+-    uint64_t rate_limit_current = migration_transferred_bytes(f);
++    uint64_t rate_limit_current = migration_transferred_bytes_noflush(f);
+     uint64_t rate_limit_used = rate_limit_current - rate_limit_start;
+     uint64_t rate_limit_max = stat64_get(&mig_stats.rate_limit_max);
+ 

debian/patches/extra/0007-Revert-x86-acpi-workaround-Windows-not-handling-name.patch

@@ -24,10 +24,10 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  1 file changed, 2 insertions(+), 6 deletions(-)
 
 diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
-index 53f804ac16..9b1b9f0412 100644
+index bb12b0ad43..de14d3c3da 100644
 --- a/hw/i386/acpi-build.c
 +++ b/hw/i386/acpi-build.c
-@@ -347,13 +347,9 @@ Aml *aml_pci_device_dsm(void)
+@@ -362,13 +362,9 @@ Aml *aml_pci_device_dsm(void)
      {
          Aml *params = aml_local(0);
          Aml *pkg = aml_package(2);

debian/patches/extra/0007-block-copy-before-write-support-unligned-snapshot-di.patch

@@ -1,48 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Date: Thu, 11 Apr 2024 11:29:23 +0200
-Subject: [PATCH] block/copy-before-write: support unligned snapshot-discard
-
-First thing that crashes on unligned access here is
-bdrv_reset_dirty_bitmap(). Correct way is to align-down the
-snapshot-discard request.
-
-Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
----
- block/copy-before-write.c | 16 +++++++++++++---
- 1 file changed, 13 insertions(+), 3 deletions(-)
-
-diff --git a/block/copy-before-write.c b/block/copy-before-write.c
-index 5a9456d426..c0e70669a2 100644
---- a/block/copy-before-write.c
-+++ b/block/copy-before-write.c
-@@ -325,14 +325,24 @@ static int coroutine_fn GRAPH_RDLOCK
- cbw_co_pdiscard_snapshot(BlockDriverState *bs, int64_t offset, int64_t bytes)
- {
-     BDRVCopyBeforeWriteState *s = bs->opaque;
-+    uint32_t cluster_size = block_copy_cluster_size(s->bcs);
-+    int64_t aligned_offset = QEMU_ALIGN_UP(offset, cluster_size);
-+    int64_t aligned_end = QEMU_ALIGN_DOWN(offset + bytes, cluster_size);
-+    int64_t aligned_bytes;
-+
-+    if (aligned_end <= aligned_offset) {
-+        return 0;
-+    }
-+    aligned_bytes = aligned_end - aligned_offset;
- 
-     WITH_QEMU_LOCK_GUARD(&s->lock) {
--        bdrv_reset_dirty_bitmap(s->access_bitmap, offset, bytes);
-+        bdrv_reset_dirty_bitmap(s->access_bitmap, aligned_offset,
-+                                aligned_bytes);
-     }
- 
--    block_copy_reset(s->bcs, offset, bytes);
-+    block_copy_reset(s->bcs, aligned_offset, aligned_bytes);
- 
--    return bdrv_co_pdiscard(s->target, offset, bytes);
-+    return bdrv_co_pdiscard(s->target, aligned_offset, aligned_bytes);
- }
- 
- static void GRAPH_RDLOCK cbw_refresh_filename(BlockDriverState *bs)

debian/patches/extra/0008-block-copy-before-write-create-block_copy-bitmap-in-.patch

@@ -1,373 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Date: Thu, 11 Apr 2024 11:29:24 +0200
-Subject: [PATCH] block/copy-before-write: create block_copy bitmap in filter
- node
-
-Currently block_copy creates copy_bitmap in source node. But that is in
-bad relation with .independent_close=true of copy-before-write filter:
-source node may be detached and removed before .bdrv_close() handler
-called, which should call block_copy_state_free(), which in turn should
-remove copy_bitmap.
-
-That's all not ideal: it would be better if internal bitmap of
-block-copy object is not attached to any node. But that is not possible
-now.
-
-The simplest solution is just create copy_bitmap in filter node, where
-anyway two other bitmaps are created.
-
-Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
----
- block/block-copy.c         |   3 +-
- block/copy-before-write.c  |   2 +-
- include/block/block-copy.h |   1 +
- tests/qemu-iotests/257.out | 112 ++++++++++++++++++-------------------
- 4 files changed, 60 insertions(+), 58 deletions(-)
-
-diff --git a/block/block-copy.c b/block/block-copy.c
-index 9ee3dd7ef5..8fca2c3698 100644
---- a/block/block-copy.c
-+++ b/block/block-copy.c
-@@ -351,6 +351,7 @@ static int64_t block_copy_calculate_cluster_size(BlockDriverState *target,
- }
- 
- BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
-+                                     BlockDriverState *copy_bitmap_bs,
-                                      const BdrvDirtyBitmap *bitmap,
-                                      Error **errp)
- {
-@@ -367,7 +368,7 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
-         return NULL;
-     }
- 
--    copy_bitmap = bdrv_create_dirty_bitmap(source->bs, cluster_size, NULL,
-+    copy_bitmap = bdrv_create_dirty_bitmap(copy_bitmap_bs, cluster_size, NULL,
-                                            errp);
-     if (!copy_bitmap) {
-         return NULL;
-diff --git a/block/copy-before-write.c b/block/copy-before-write.c
-index c0e70669a2..94db31512d 100644
---- a/block/copy-before-write.c
-+++ b/block/copy-before-write.c
-@@ -468,7 +468,7 @@ static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
-             ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
-              bs->file->bs->supported_zero_flags);
- 
--    s->bcs = block_copy_state_new(bs->file, s->target, bitmap, errp);
-+    s->bcs = block_copy_state_new(bs->file, s->target, bs, bitmap, errp);
-     if (!s->bcs) {
-         error_prepend(errp, "Cannot create block-copy-state: ");
-         return -EINVAL;
-diff --git a/include/block/block-copy.h b/include/block/block-copy.h
-index 0700953ab8..8b41643bfa 100644
---- a/include/block/block-copy.h
-+++ b/include/block/block-copy.h
-@@ -25,6 +25,7 @@ typedef struct BlockCopyState BlockCopyState;
- typedef struct BlockCopyCallState BlockCopyCallState;
- 
- BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
-+                                     BlockDriverState *copy_bitmap_bs,
-                                      const BdrvDirtyBitmap *bitmap,
-                                      Error **errp);
- 
-diff --git a/tests/qemu-iotests/257.out b/tests/qemu-iotests/257.out
-index aa76131ca9..c33dd7f3a9 100644
---- a/tests/qemu-iotests/257.out
-+++ b/tests/qemu-iotests/257.out
-@@ -120,16 +120,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -596,16 +596,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -865,16 +865,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -1341,16 +1341,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -1610,16 +1610,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -2086,16 +2086,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -2355,16 +2355,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -2831,16 +2831,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -3100,16 +3100,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -3576,16 +3576,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -3845,16 +3845,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -4321,16 +4321,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -4590,16 +4590,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,
-@@ -5066,16 +5066,16 @@ write -P0x67 0x3fe0000 0x20000
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      }
--    ],
--    "drive0": [
-+      },
-       {
-         "busy": false,
-         "count": 0,
-         "granularity": 65536,
-         "persistent": false,
-         "recording": false
--      },
-+      }
-+    ],
-+    "drive0": [
-       {
-         "busy": false,
-         "count": 458752,

debian/patches/extra/0008-target-i386-the-sgx_epc_get_section-stub-is-reachabl.patch

@@ -0,0 +1,34 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Paolo Bonzini <pbonzini@redhat.com>
+Date: Tue, 1 Feb 2022 20:09:41 +0100
+Subject: [PATCH] target/i386: the sgx_epc_get_section stub is reachable
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The sgx_epc_get_section stub is reachable from cpu_x86_cpuid.  It
+should not assert, instead it should just return true just like
+the "real" sgx_epc_get_section does when SGX is disabled.
+
+Reported-by: Vladimír Beneš <vbenes@redhat.com>
+Cc: qemu-stable@nongnu.org
+Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
+Message-ID: <20220201190941.106001-1-pbonzini@redhat.com>
+Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
+(cherry-picked from commit 219615740425d9683588207b40a365e6741691a6)
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ hw/i386/sgx-stub.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/hw/i386/sgx-stub.c b/hw/i386/sgx-stub.c
+index 26833eb233..16b1dfd90b 100644
+--- a/hw/i386/sgx-stub.c
++++ b/hw/i386/sgx-stub.c
+@@ -34,5 +34,5 @@ void pc_machine_init_sgx_epc(PCMachineState *pcms)
+ 
+ bool sgx_epc_get_section(int section_nr, uint64_t *addr, uint64_t *size)
+ {
+-    g_assert_not_reached();
++    return true;
+ }

debian/patches/extra/0009-qapi-blockdev-backup-add-discard-source-parameter.patch

@@ -1,277 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Date: Thu, 11 Apr 2024 11:29:25 +0200
-Subject: [PATCH] qapi: blockdev-backup: add discard-source parameter
-
-Add a parameter that enables discard-after-copy. That is mostly useful
-in "push backup with fleecing" scheme, when source is snapshot-access
-format driver node, based on copy-before-write filter snapshot-access
-API:
-
-[guest]      [snapshot-access] ~~ blockdev-backup ~~> [backup target]
-   |            |
-   | root       | file
-   v            v
-[copy-before-write]
-   |             |
-   | file        | target
-   v             v
-[active disk]   [temp.img]
-
-In this case discard-after-copy does two things:
-
- - discard data in temp.img to save disk space
- - avoid further copy-before-write operation in discarded area
-
-Note that we have to declare WRITE permission on source in
-copy-before-write filter, for discard to work. Still we can't take it
-unconditionally, as it will break normal backup from RO source. So, we
-have to add a parameter and pass it thorough bdrv_open flags.
-
-Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
----
- block/backup.c                         |  5 +++--
- block/block-copy.c                     |  9 +++++++++
- block/copy-before-write.c              | 15 +++++++++++++--
- block/copy-before-write.h              |  1 +
- block/replication.c                    |  4 ++--
- blockdev.c                             |  2 +-
- include/block/block-common.h           |  2 ++
- include/block/block-copy.h             |  1 +
- include/block/block_int-global-state.h |  2 +-
- qapi/block-core.json                   |  4 ++++
- 10 files changed, 37 insertions(+), 8 deletions(-)
-
-diff --git a/block/backup.c b/block/backup.c
-index ec29d6b810..3dd2e229d2 100644
---- a/block/backup.c
-+++ b/block/backup.c
-@@ -356,7 +356,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
-                   BlockDriverState *target, int64_t speed,
-                   MirrorSyncMode sync_mode, BdrvDirtyBitmap *sync_bitmap,
-                   BitmapSyncMode bitmap_mode,
--                  bool compress,
-+                  bool compress, bool discard_source,
-                   const char *filter_node_name,
-                   BackupPerf *perf,
-                   BlockdevOnError on_source_error,
-@@ -457,7 +457,8 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
-         goto error;
-     }
- 
--    cbw = bdrv_cbw_append(bs, target, filter_node_name, &bcs, errp);
-+    cbw = bdrv_cbw_append(bs, target, filter_node_name, discard_source,
-+                          &bcs, errp);
-     if (!cbw) {
-         goto error;
-     }
-diff --git a/block/block-copy.c b/block/block-copy.c
-index 8fca2c3698..7e3b378528 100644
---- a/block/block-copy.c
-+++ b/block/block-copy.c
-@@ -137,6 +137,7 @@ typedef struct BlockCopyState {
-     CoMutex lock;
-     int64_t in_flight_bytes;
-     BlockCopyMethod method;
-+    bool discard_source;
-     BlockReqList reqs;
-     QLIST_HEAD(, BlockCopyCallState) calls;
-     /*
-@@ -353,6 +354,7 @@ static int64_t block_copy_calculate_cluster_size(BlockDriverState *target,
- BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
-                                      BlockDriverState *copy_bitmap_bs,
-                                      const BdrvDirtyBitmap *bitmap,
-+                                     bool discard_source,
-                                      Error **errp)
- {
-     ERRP_GUARD();
-@@ -418,6 +420,7 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
-                                     cluster_size),
-     };
- 
-+    s->discard_source = discard_source;
-     block_copy_set_copy_opts(s, false, false);
- 
-     ratelimit_init(&s->rate_limit);
-@@ -589,6 +592,12 @@ static coroutine_fn int block_copy_task_entry(AioTask *task)
-     co_put_to_shres(s->mem, t->req.bytes);
-     block_copy_task_end(t, ret);
- 
-+    if (s->discard_source && ret == 0) {
-+        int64_t nbytes =
-+            MIN(t->req.offset + t->req.bytes, s->len) - t->req.offset;
-+        bdrv_co_pdiscard(s->source, t->req.offset, nbytes);
-+    }
-+
-     return ret;
- }
- 
-diff --git a/block/copy-before-write.c b/block/copy-before-write.c
-index 94db31512d..853e01a1eb 100644
---- a/block/copy-before-write.c
-+++ b/block/copy-before-write.c
-@@ -44,6 +44,7 @@ typedef struct BDRVCopyBeforeWriteState {
-     BdrvChild *target;
-     OnCbwError on_cbw_error;
-     uint64_t cbw_timeout_ns;
-+    bool discard_source;
- 
-     /*
-      * @lock: protects access to @access_bitmap, @done_bitmap and
-@@ -357,6 +358,8 @@ cbw_child_perm(BlockDriverState *bs, BdrvChild *c, BdrvChildRole role,
-                uint64_t perm, uint64_t shared,
-                uint64_t *nperm, uint64_t *nshared)
- {
-+    BDRVCopyBeforeWriteState *s = bs->opaque;
-+
-     if (!(role & BDRV_CHILD_FILTERED)) {
-         /*
-          * Target child
-@@ -381,6 +384,10 @@ cbw_child_perm(BlockDriverState *bs, BdrvChild *c, BdrvChildRole role,
-              * start
-              */
-             *nperm = *nperm | BLK_PERM_CONSISTENT_READ;
-+            if (s->discard_source) {
-+                *nperm = *nperm | BLK_PERM_WRITE;
-+            }
-+
-             *nshared &= ~(BLK_PERM_WRITE | BLK_PERM_RESIZE);
-         }
-     }
-@@ -468,7 +475,9 @@ static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
-             ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
-              bs->file->bs->supported_zero_flags);
- 
--    s->bcs = block_copy_state_new(bs->file, s->target, bs, bitmap, errp);
-+    s->discard_source = flags & BDRV_O_CBW_DISCARD_SOURCE;
-+    s->bcs = block_copy_state_new(bs->file, s->target, bs, bitmap,
-+                                  flags & BDRV_O_CBW_DISCARD_SOURCE, errp);
-     if (!s->bcs) {
-         error_prepend(errp, "Cannot create block-copy-state: ");
-         return -EINVAL;
-@@ -535,12 +544,14 @@ static BlockDriver bdrv_cbw_filter = {
- BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
-                                   BlockDriverState *target,
-                                   const char *filter_node_name,
-+                                  bool discard_source,
-                                   BlockCopyState **bcs,
-                                   Error **errp)
- {
-     BDRVCopyBeforeWriteState *state;
-     BlockDriverState *top;
-     QDict *opts;
-+    int flags = BDRV_O_RDWR | (discard_source ? BDRV_O_CBW_DISCARD_SOURCE : 0);
- 
-     assert(source->total_sectors == target->total_sectors);
-     GLOBAL_STATE_CODE();
-@@ -553,7 +564,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
-     qdict_put_str(opts, "file", bdrv_get_node_name(source));
-     qdict_put_str(opts, "target", bdrv_get_node_name(target));
- 
--    top = bdrv_insert_node(source, opts, BDRV_O_RDWR, errp);
-+    top = bdrv_insert_node(source, opts, flags, errp);
-     if (!top) {
-         return NULL;
-     }
-diff --git a/block/copy-before-write.h b/block/copy-before-write.h
-index 6e72bb25e9..01af0cd3c4 100644
---- a/block/copy-before-write.h
-+++ b/block/copy-before-write.h
-@@ -39,6 +39,7 @@
- BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
-                                   BlockDriverState *target,
-                                   const char *filter_node_name,
-+                                  bool discard_source,
-                                   BlockCopyState **bcs,
-                                   Error **errp);
- void bdrv_cbw_drop(BlockDriverState *bs);
-diff --git a/block/replication.c b/block/replication.c
-index ca6bd0a720..0415a5e8b7 100644
---- a/block/replication.c
-+++ b/block/replication.c
-@@ -582,8 +582,8 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode,
- 
-         s->backup_job = backup_job_create(
-                                 NULL, s->secondary_disk->bs, s->hidden_disk->bs,
--                                0, MIRROR_SYNC_MODE_NONE, NULL, 0, false, NULL,
--                                &perf,
-+                                0, MIRROR_SYNC_MODE_NONE, NULL, 0, false, false,
-+                                NULL, &perf,
-                                 BLOCKDEV_ON_ERROR_REPORT,
-                                 BLOCKDEV_ON_ERROR_REPORT, JOB_INTERNAL,
-                                 backup_job_completed, bs, NULL, &local_err);
-diff --git a/blockdev.c b/blockdev.c
-index 057601dcf0..4c33c3f5f0 100644
---- a/blockdev.c
-+++ b/blockdev.c
-@@ -2726,7 +2726,7 @@ static BlockJob *do_backup_common(BackupCommon *backup,
- 
-     job = backup_job_create(backup->job_id, bs, target_bs, backup->speed,
-                             backup->sync, bmap, backup->bitmap_mode,
--                            backup->compress,
-+                            backup->compress, backup->discard_source,
-                             backup->filter_node_name,
-                             &perf,
-                             backup->on_source_error,
-diff --git a/include/block/block-common.h b/include/block/block-common.h
-index a846023a09..338fe5ff7a 100644
---- a/include/block/block-common.h
-+++ b/include/block/block-common.h
-@@ -243,6 +243,8 @@ typedef enum {
-                                       read-write fails */
- #define BDRV_O_IO_URING    0x40000 /* use io_uring instead of the thread pool */
- 
-+#define BDRV_O_CBW_DISCARD_SOURCE 0x80000 /* for copy-before-write filter */
-+
- #define BDRV_O_CACHE_MASK  (BDRV_O_NOCACHE | BDRV_O_NO_FLUSH)
- 
- 
-diff --git a/include/block/block-copy.h b/include/block/block-copy.h
-index 8b41643bfa..bdc703bacd 100644
---- a/include/block/block-copy.h
-+++ b/include/block/block-copy.h
-@@ -27,6 +27,7 @@ typedef struct BlockCopyCallState BlockCopyCallState;
- BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
-                                      BlockDriverState *copy_bitmap_bs,
-                                      const BdrvDirtyBitmap *bitmap,
-+                                     bool discard_source,
-                                      Error **errp);
- 
- /* Function should be called prior any actual copy request */
-diff --git a/include/block/block_int-global-state.h b/include/block/block_int-global-state.h
-index d2201e27f4..eb2d92a226 100644
---- a/include/block/block_int-global-state.h
-+++ b/include/block/block_int-global-state.h
-@@ -193,7 +193,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
-                             MirrorSyncMode sync_mode,
-                             BdrvDirtyBitmap *sync_bitmap,
-                             BitmapSyncMode bitmap_mode,
--                            bool compress,
-+                            bool compress, bool discard_source,
-                             const char *filter_node_name,
-                             BackupPerf *perf,
-                             BlockdevOnError on_source_error,
-diff --git a/qapi/block-core.json b/qapi/block-core.json
-index 4b18e01b85..b179d65520 100644
---- a/qapi/block-core.json
-+++ b/qapi/block-core.json
-@@ -1610,6 +1610,9 @@
- #     node specified by @drive.  If this option is not given, a node
- #     name is autogenerated.  (Since: 4.2)
- #
-+# @discard-source: Discard blocks on source which are already copied
-+#     to the target.  (Since 9.0)
-+#
- # @x-perf: Performance options.  (Since 6.0)
- #
- # Features:
-@@ -1631,6 +1634,7 @@
-             '*on-target-error': 'BlockdevOnError',
-             '*auto-finalize': 'bool', '*auto-dismiss': 'bool',
-             '*filter-node-name': 'str',
-+            '*discard-source': 'bool',
-             '*x-perf': { 'type': 'BackupPerf',
-                          'features': [ 'unstable' ] } } }
- 

debian/patches/extra/0009-ui-clipboard-mark-type-as-not-available-when-there-i.patch

@@ -0,0 +1,86 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Fiona Ebner <f.ebner@proxmox.com>
+Date: Wed, 24 Jan 2024 11:57:48 +0100
+Subject: [PATCH] ui/clipboard: mark type as not available when there is no
+ data
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+With VNC, a client can send a non-extended VNC_MSG_CLIENT_CUT_TEXT
+message with len=0. In qemu_clipboard_set_data(), the clipboard info
+will be updated setting data to NULL (because g_memdup(data, size)
+returns NULL when size is 0). If the client does not set the
+VNC_ENCODING_CLIPBOARD_EXT feature when setting up the encodings, then
+the 'request' callback for the clipboard peer is not initialized.
+Later, because data is NULL, qemu_clipboard_request() can be reached
+via vdagent_chr_write() and vdagent_clipboard_recv_request() and
+there, the clipboard owner's 'request' callback will be attempted to
+be called, but that is a NULL pointer.
+
+In particular, this can happen when using the KRDC (22.12.3) VNC
+client.
+
+Another scenario leading to the same issue is with two clients (say
+noVNC and KRDC):
+
+The noVNC client sets the extension VNC_FEATURE_CLIPBOARD_EXT and
+initializes its cbpeer.
+
+The KRDC client does not, but triggers a vnc_client_cut_text() (note
+it's not the _ext variant)). There, a new clipboard info with it as
+the 'owner' is created and via qemu_clipboard_set_data() is called,
+which in turn calls qemu_clipboard_update() with that info.
+
+In qemu_clipboard_update(), the notifier for the noVNC client will be
+called, i.e. vnc_clipboard_notify() and also set vs->cbinfo for the
+noVNC client. The 'owner' in that clipboard info is the clipboard peer
+for the KRDC client, which did not initialize the 'request' function.
+That sounds correct to me, it is the owner of that clipboard info.
+
+Then when noVNC sends a VNC_MSG_CLIENT_CUT_TEXT message (it did set
+the VNC_FEATURE_CLIPBOARD_EXT feature correctly, so a check for it
+passes), that clipboard info is passed to qemu_clipboard_request() and
+the original segfault still happens.
+
+Fix the issue by handling updates with size 0 differently. In
+particular, mark in the clipboard info that the type is not available.
+
+While at it, switch to g_memdup2(), because g_memdup() is deprecated.
+
+Cc: qemu-stable@nongnu.org
+Fixes: CVE-2023-6683
+Reported-by: Markus Frank <m.frank@proxmox.com>
+Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
+Tested-by: Markus Frank <m.frank@proxmox.com>
+(picked from https://lists.nongnu.org/archive/html/qemu-stable/2024-01/msg00228.html)
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ ui/clipboard.c | 12 +++++++++---
+ 1 file changed, 9 insertions(+), 3 deletions(-)
+
+diff --git a/ui/clipboard.c b/ui/clipboard.c
+index 3d14bffaf8..b3f6fa3c9e 100644
+--- a/ui/clipboard.c
++++ b/ui/clipboard.c
+@@ -163,9 +163,15 @@ void qemu_clipboard_set_data(QemuClipboardPeer *peer,
+     }
+ 
+     g_free(info->types[type].data);
+-    info->types[type].data = g_memdup(data, size);
+-    info->types[type].size = size;
+-    info->types[type].available = true;
++    if (size) {
++        info->types[type].data = g_memdup2(data, size);
++        info->types[type].size = size;
++        info->types[type].available = true;
++    } else {
++        info->types[type].data = NULL;
++        info->types[type].size = 0;
++        info->types[type].available = false;
++    }
+ 
+     if (update) {
+         qemu_clipboard_update(info);

debian/patches/extra/0010-hw-virtio-Fix-the-de-initialization-of-vhost-user-de.patch

@@ -1,92 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Thomas Huth <thuth@redhat.com>
-Date: Tue, 18 Jun 2024 14:19:58 +0200
-Subject: [PATCH] hw/virtio: Fix the de-initialization of vhost-user devices
-
-The unrealize functions of the various vhost-user devices are
-calling the corresponding vhost_*_set_status() functions with a
-status of 0 to shut down the device correctly.
-
-Now these vhost_*_set_status() functions all follow this scheme:
-
-    bool should_start = virtio_device_should_start(vdev, status);
-
-    if (vhost_dev_is_started(&vvc->vhost_dev) == should_start) {
-        return;
-    }
-
-    if (should_start) {
-        /* ... do the initialization stuff ... */
-    } else {
-        /* ... do the cleanup stuff ... */
-    }
-
-The problem here is virtio_device_should_start(vdev, 0) currently
-always returns "true" since it internally only looks at vdev->started
-instead of looking at the "status" parameter. Thus once the device
-got started once, virtio_device_should_start() always returns true
-and thus the vhost_*_set_status() functions return early, without
-ever doing any clean-up when being called with status == 0. This
-causes e.g. problems when trying to hot-plug and hot-unplug a vhost
-user devices multiple times since the de-initialization step is
-completely skipped during the unplug operation.
-
-This bug has been introduced in commit 9f6bcfd99f ("hw/virtio: move
-vm_running check to virtio_device_started") which replaced
-
- should_start = status & VIRTIO_CONFIG_S_DRIVER_OK;
-
-with
-
- should_start = virtio_device_started(vdev, status);
-
-which later got replaced by virtio_device_should_start(). This blocked
-the possibility to set should_start to false in case the status flag
-VIRTIO_CONFIG_S_DRIVER_OK was not set.
-
-Fix it by adjusting the virtio_device_should_start() function to
-only consider the status flag instead of vdev->started. Since this
-function is only used in the various vhost_*_set_status() functions
-for exactly the same purpose, it should be fine to fix it in this
-central place there without any risk to change the behavior of other
-code.
-
-Fixes: 9f6bcfd99f ("hw/virtio: move vm_running check to virtio_device_started")
-Buglink: https://issues.redhat.com/browse/RHEL-40708
-Signed-off-by: Thomas Huth <thuth@redhat.com>
-Message-Id: <20240618121958.88673-1-thuth@redhat.com>
-Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
-Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
-Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-(cherry picked from commit d72479b11797c28893e1e3fc565497a9cae5ca16)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- include/hw/virtio/virtio.h | 8 ++++----
- 1 file changed, 4 insertions(+), 4 deletions(-)
-
-diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
-index 7d5ffdc145..2eafad17b8 100644
---- a/include/hw/virtio/virtio.h
-+++ b/include/hw/virtio/virtio.h
-@@ -470,9 +470,9 @@ static inline bool virtio_device_started(VirtIODevice *vdev, uint8_t status)
-  * @vdev - the VirtIO device
-  * @status - the devices status bits
-  *
-- * This is similar to virtio_device_started() but also encapsulates a
-- * check on the VM status which would prevent a device starting
-- * anyway.
-+ * This is similar to virtio_device_started() but ignores vdev->started
-+ * and also encapsulates a check on the VM status which would prevent a
-+ * device from starting anyway.
-  */
- static inline bool virtio_device_should_start(VirtIODevice *vdev, uint8_t status)
- {
-@@ -480,7 +480,7 @@ static inline bool virtio_device_should_start(VirtIODevice *vdev, uint8_t status
-         return false;
-     }
- 
--    return virtio_device_started(vdev, status);
-+    return status & VIRTIO_CONFIG_S_DRIVER_OK;
- }
- 
- static inline void virtio_set_started(VirtIODevice *vdev, bool started)

debian/patches/extra/0010-virtio-scsi-Attach-event-vq-notifier-with-no_poll.patch

@@ -0,0 +1,65 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Hanna Czenczek <hreitz@redhat.com>
+Date: Fri, 2 Feb 2024 16:31:56 +0100
+Subject: [PATCH] virtio-scsi: Attach event vq notifier with no_poll
+
+As of commit 38738f7dbbda90fbc161757b7f4be35b52205552 ("virtio-scsi:
+don't waste CPU polling the event virtqueue"), we only attach an io_read
+notifier for the virtio-scsi event virtqueue instead, and no polling
+notifiers.  During operation, the event virtqueue is typically
+non-empty, but none of the buffers are intended to be used immediately.
+Instead, they only get used when certain events occur.  Therefore, it
+makes no sense to continuously poll it when non-empty, because it is
+supposed to be and stay non-empty.
+
+We do this by using virtio_queue_aio_attach_host_notifier_no_poll()
+instead of virtio_queue_aio_attach_host_notifier() for the event
+virtqueue.
+
+Commit 766aa2de0f29b657148e04599320d771c36fd126 ("virtio-scsi: implement
+BlockDevOps->drained_begin()") however has virtio_scsi_drained_end() use
+virtio_queue_aio_attach_host_notifier() for all virtqueues, including
+the event virtqueue.  This can lead to it being polled again, undoing
+the benefit of commit 38738f7dbbda90fbc161757b7f4be35b52205552.
+
+Fix it by using virtio_queue_aio_attach_host_notifier_no_poll() for the
+event virtqueue.
+
+       ("virtio-scsi: implement BlockDevOps->drained_begin()")
+
+Reported-by: Fiona Ebner <f.ebner@proxmox.com>
+Fixes: 766aa2de0f29b657148e04599320d771c36fd126
+Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
+Tested-by: Fiona Ebner <f.ebner@proxmox.com>
+Reviewed-by: Fiona Ebner <f.ebner@proxmox.com>
+Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
+Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
+---
+ hw/scsi/virtio-scsi.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
+index 45b95ea070..ad24a882fd 100644
+--- a/hw/scsi/virtio-scsi.c
++++ b/hw/scsi/virtio-scsi.c
+@@ -1148,6 +1148,7 @@ static void virtio_scsi_drained_begin(SCSIBus *bus)
+ static void virtio_scsi_drained_end(SCSIBus *bus)
+ {
+     VirtIOSCSI *s = container_of(bus, VirtIOSCSI, bus);
++    VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s);
+     VirtIODevice *vdev = VIRTIO_DEVICE(s);
+     uint32_t total_queues = VIRTIO_SCSI_VQ_NUM_FIXED +
+                             s->parent_obj.conf.num_queues;
+@@ -1165,7 +1166,11 @@ static void virtio_scsi_drained_end(SCSIBus *bus)
+ 
+     for (uint32_t i = 0; i < total_queues; i++) {
+         VirtQueue *vq = virtio_get_queue(vdev, i);
+-        virtio_queue_aio_attach_host_notifier(vq, s->ctx);
++        if (vq == vs->event_vq) {
++            virtio_queue_aio_attach_host_notifier_no_poll(vq, s->ctx);
++        } else {
++            virtio_queue_aio_attach_host_notifier(vq, s->ctx);
++        }
+     }
+ }
+ 

debian/patches/extra/0011-target-arm-Use-float_status-copy-in-sme_fmopa_s.patch

@@ -1,43 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Daniyal Khan <danikhan632@gmail.com>
-Date: Wed, 17 Jul 2024 16:01:47 +1000
-Subject: [PATCH] target/arm: Use float_status copy in sme_fmopa_s
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-We made a copy above because the fp exception flags
-are not propagated back to the FPST register, but
-then failed to use the copy.
-
-Cc: qemu-stable@nongnu.org
-Fixes: 558e956c719 ("target/arm: Implement FMOPA, FMOPS (non-widening)")
-Signed-off-by: Daniyal Khan <danikhan632@gmail.com>
-Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
-Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
-Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
-Message-id: 20240717060149.204788-2-richard.henderson@linaro.org
-[rth: Split from a larger patch]
-Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
-Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
-Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
-Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-(cherry picked from commit 31d93fedf41c24b0badb38cd9317590d1ef74e37)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- target/arm/tcg/sme_helper.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/target/arm/tcg/sme_helper.c b/target/arm/tcg/sme_helper.c
-index e2e0575039..5a6dd76489 100644
---- a/target/arm/tcg/sme_helper.c
-+++ b/target/arm/tcg/sme_helper.c
-@@ -916,7 +916,7 @@ void HELPER(sme_fmopa_s)(void *vza, void *vzn, void *vzm, void *vpn,
-                         if (pb & 1) {
-                             uint32_t *a = vza_row + H1_4(col);
-                             uint32_t *m = vzm + H1_4(col);
--                            *a = float32_muladd(n, *m, *a, 0, vst);
-+                            *a = float32_muladd(n, *m, *a, 0, &fpst);
-                         }
-                         col += 4;
-                         pb >>= 4;

debian/patches/extra/0011-virtio-Re-enable-notifications-after-drain.patch

@@ -0,0 +1,125 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Hanna Czenczek <hreitz@redhat.com>
+Date: Fri, 2 Feb 2024 16:31:57 +0100
+Subject: [PATCH] virtio: Re-enable notifications after drain
+
+During drain, we do not care about virtqueue notifications, which is why
+we remove the handlers on it.  When removing those handlers, whether vq
+notifications are enabled or not depends on whether we were in polling
+mode or not; if not, they are enabled (by default); if so, they have
+been disabled by the io_poll_start callback.
+
+Because we do not care about those notifications after removing the
+handlers, this is fine.  However, we have to explicitly ensure they are
+enabled when re-attaching the handlers, so we will resume receiving
+notifications.  We do this in virtio_queue_aio_attach_host_notifier*().
+If such a function is called while we are in a polling section,
+attaching the notifiers will then invoke the io_poll_start callback,
+re-disabling notifications.
+
+Because we will always miss virtqueue updates in the drained section, we
+also need to poll the virtqueue once after attaching the notifiers.
+
+Buglink: https://issues.redhat.com/browse/RHEL-3934
+Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
+Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
+---
+ hw/virtio/virtio.c  | 42 ++++++++++++++++++++++++++++++++++++++++++
+ include/block/aio.h |  7 ++++++-
+ 2 files changed, 48 insertions(+), 1 deletion(-)
+
+diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
+index 969c25f4cf..02cce83111 100644
+--- a/hw/virtio/virtio.c
++++ b/hw/virtio/virtio.c
+@@ -3526,6 +3526,17 @@ static void virtio_queue_host_notifier_aio_poll_end(EventNotifier *n)
+ 
+ void virtio_queue_aio_attach_host_notifier(VirtQueue *vq, AioContext *ctx)
+ {
++    /*
++     * virtio_queue_aio_detach_host_notifier() can leave notifications disabled.
++     * Re-enable them.  (And if detach has not been used before, notifications
++     * being enabled is still the default state while a notifier is attached;
++     * see virtio_queue_host_notifier_aio_poll_end(), which will always leave
++     * notifications enabled once the polling section is left.)
++     */
++    if (!virtio_queue_get_notification(vq)) {
++        virtio_queue_set_notification(vq, 1);
++    }
++
+     aio_set_event_notifier(ctx, &vq->host_notifier,
+                            virtio_queue_host_notifier_read,
+                            virtio_queue_host_notifier_aio_poll,
+@@ -3533,6 +3544,13 @@ void virtio_queue_aio_attach_host_notifier(VirtQueue *vq, AioContext *ctx)
+     aio_set_event_notifier_poll(ctx, &vq->host_notifier,
+                                 virtio_queue_host_notifier_aio_poll_begin,
+                                 virtio_queue_host_notifier_aio_poll_end);
++
++    /*
++     * We will have ignored notifications about new requests from the guest
++     * while no notifiers were attached, so "kick" the virt queue to process
++     * those requests now.
++     */
++    event_notifier_set(&vq->host_notifier);
+ }
+ 
+ /*
+@@ -3543,14 +3561,38 @@ void virtio_queue_aio_attach_host_notifier(VirtQueue *vq, AioContext *ctx)
+  */
+ void virtio_queue_aio_attach_host_notifier_no_poll(VirtQueue *vq, AioContext *ctx)
+ {
++    /* See virtio_queue_aio_attach_host_notifier() */
++    if (!virtio_queue_get_notification(vq)) {
++        virtio_queue_set_notification(vq, 1);
++    }
++
+     aio_set_event_notifier(ctx, &vq->host_notifier,
+                            virtio_queue_host_notifier_read,
+                            NULL, NULL);
++
++    /*
++     * See virtio_queue_aio_attach_host_notifier().
++     * Note that this may be unnecessary for the type of virtqueues this
++     * function is used for.  Still, it will not hurt to have a quick look into
++     * whether we can/should process any of the virtqueue elements.
++     */
++    event_notifier_set(&vq->host_notifier);
+ }
+ 
+ void virtio_queue_aio_detach_host_notifier(VirtQueue *vq, AioContext *ctx)
+ {
+     aio_set_event_notifier(ctx, &vq->host_notifier, NULL, NULL, NULL);
++
++    /*
++     * aio_set_event_notifier_poll() does not guarantee whether io_poll_end()
++     * will run after io_poll_begin(), so by removing the notifier, we do not
++     * know whether virtio_queue_host_notifier_aio_poll_end() has run after a
++     * previous virtio_queue_host_notifier_aio_poll_begin(), i.e. whether
++     * notifications are enabled or disabled.  It does not really matter anyway;
++     * we just removed the notifier, so we do not care about notifications until
++     * we potentially re-attach it.  The attach_host_notifier functions will
++     * ensure that notifications are enabled again when they are needed.
++     */
+ }
+ 
+ void virtio_queue_host_notifier_read(EventNotifier *n)
+diff --git a/include/block/aio.h b/include/block/aio.h
+index 32042e8905..79efadfa48 100644
+--- a/include/block/aio.h
++++ b/include/block/aio.h
+@@ -498,9 +498,14 @@ void aio_set_event_notifier(AioContext *ctx,
+                             AioPollFn *io_poll,
+                             EventNotifierHandler *io_poll_ready);
+ 
+-/* Set polling begin/end callbacks for an event notifier that has already been
++/*
++ * Set polling begin/end callbacks for an event notifier that has already been
+  * registered with aio_set_event_notifier.  Do nothing if the event notifier is
+  * not registered.
++ *
++ * Note that if the io_poll_end() callback (or the entire notifier) is removed
++ * during polling, it will not be called, so an io_poll_begin() is not
++ * necessarily always followed by an io_poll_end().
+  */
+ void aio_set_event_notifier_poll(AioContext *ctx,
+                                  EventNotifier *notifier,

debian/patches/extra/0012-target-arm-Use-FPST_F16-for-SME-FMOPA-widening.patch

@@ -1,62 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Richard Henderson <richard.henderson@linaro.org>
-Date: Wed, 17 Jul 2024 16:01:48 +1000
-Subject: [PATCH] target/arm: Use FPST_F16 for SME FMOPA (widening)
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-This operation has float16 inputs and thus must use
-the FZ16 control not the FZ control.
-
-Cc: qemu-stable@nongnu.org
-Fixes: 3916841ac75 ("target/arm: Implement FMOPA, FMOPS (widening)")
-Reported-by: Daniyal Khan <danikhan632@gmail.com>
-Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
-Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
-Message-id: 20240717060149.204788-3-richard.henderson@linaro.org
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2374
-Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
-Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
-Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-(cherry picked from commit 207d30b5fdb5b45a36f26eefcf52fe2c1714dd4f)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- target/arm/tcg/translate-sme.c | 12 ++++++++----
- 1 file changed, 8 insertions(+), 4 deletions(-)
-
-diff --git a/target/arm/tcg/translate-sme.c b/target/arm/tcg/translate-sme.c
-index 46c7fce8b4..185a8a917b 100644
---- a/target/arm/tcg/translate-sme.c
-+++ b/target/arm/tcg/translate-sme.c
-@@ -304,6 +304,7 @@ static bool do_outprod(DisasContext *s, arg_op *a, MemOp esz,
- }
- 
- static bool do_outprod_fpst(DisasContext *s, arg_op *a, MemOp esz,
-+                            ARMFPStatusFlavour e_fpst,
-                             gen_helper_gvec_5_ptr *fn)
- {
-     int svl = streaming_vec_reg_size(s);
-@@ -319,15 +320,18 @@ static bool do_outprod_fpst(DisasContext *s, arg_op *a, MemOp esz,
-     zm = vec_full_reg_ptr(s, a->zm);
-     pn = pred_full_reg_ptr(s, a->pn);
-     pm = pred_full_reg_ptr(s, a->pm);
--    fpst = fpstatus_ptr(FPST_FPCR);
-+    fpst = fpstatus_ptr(e_fpst);
- 
-     fn(za, zn, zm, pn, pm, fpst, tcg_constant_i32(desc));
-     return true;
- }
- 
--TRANS_FEAT(FMOPA_h, aa64_sme, do_outprod_fpst, a, MO_32, gen_helper_sme_fmopa_h)
--TRANS_FEAT(FMOPA_s, aa64_sme, do_outprod_fpst, a, MO_32, gen_helper_sme_fmopa_s)
--TRANS_FEAT(FMOPA_d, aa64_sme_f64f64, do_outprod_fpst, a, MO_64, gen_helper_sme_fmopa_d)
-+TRANS_FEAT(FMOPA_h, aa64_sme, do_outprod_fpst, a,
-+           MO_32, FPST_FPCR_F16, gen_helper_sme_fmopa_h)
-+TRANS_FEAT(FMOPA_s, aa64_sme, do_outprod_fpst, a,
-+           MO_32, FPST_FPCR, gen_helper_sme_fmopa_s)
-+TRANS_FEAT(FMOPA_d, aa64_sme_f64f64, do_outprod_fpst, a,
-+           MO_64, FPST_FPCR, gen_helper_sme_fmopa_d)
- 
- /* TODO: FEAT_EBF16 */
- TRANS_FEAT(BFMOPA, aa64_sme, do_outprod, a, MO_32, gen_helper_sme_bfmopa)

debian/patches/extra/0013-scsi-fix-regression-and-honor-bootindex-again-for-le.patch

@@ -1,60 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Fiona Ebner <f.ebner@proxmox.com>
-Date: Wed, 10 Jul 2024 17:25:29 +0200
-Subject: [PATCH] scsi: fix regression and honor bootindex again for legacy
- drives
-
-Commit 3089637461 ("scsi: Don't ignore most usb-storage properties")
-removed the call to object_property_set_int() and thus the 'set'
-method for the bootindex property was also not called anymore. Here
-that method is device_set_bootindex() (as configured by
-scsi_dev_instance_init() -> device_add_bootindex_property()) which as
-a side effect registers the device via add_boot_device_path().
-
-As reported by a downstream user [0], the bootindex property did not
-have the desired effect anymore for legacy drives. Fix the regression
-by explicitly calling the add_boot_device_path() function after
-checking that the bootindex is not yet used (to avoid
-add_boot_device_path() calling exit()).
-
-[0]: https://forum.proxmox.com/threads/149772/post-679433
-
-Cc: qemu-stable@nongnu.org
-Fixes: 3089637461 ("scsi: Don't ignore most usb-storage properties")
-Suggested-by: Kevin Wolf <kwolf@redhat.com>
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Link: https://lore.kernel.org/r/20240710152529.1737407-1-f.ebner@proxmox.com
-Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-(cherry picked from commit 57a8a80d1a5b28797b21d30bfc60601945820e51)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- hw/scsi/scsi-bus.c | 9 +++++++++
- 1 file changed, 9 insertions(+)
-
-diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
-index 9e40b0c920..53eff5dd3d 100644
---- a/hw/scsi/scsi-bus.c
-+++ b/hw/scsi/scsi-bus.c
-@@ -384,6 +384,7 @@ SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
-     DeviceState *dev;
-     SCSIDevice *s;
-     DriveInfo *dinfo;
-+    Error *local_err = NULL;
- 
-     if (blk_is_sg(blk)) {
-         driver = "scsi-generic";
-@@ -403,6 +404,14 @@ SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
-     s = SCSI_DEVICE(dev);
-     s->conf = *conf;
- 
-+    check_boot_index(conf->bootindex, &local_err);
-+    if (local_err) {
-+        object_unparent(OBJECT(dev));
-+        error_propagate(errp, local_err);
-+        return NULL;
-+    }
-+    add_boot_device_path(conf->bootindex, dev, NULL);
-+
-     qdev_prop_set_uint32(dev, "scsi-id", unit);
-     if (object_property_find(OBJECT(dev), "removable")) {
-         qdev_prop_set_bit(dev, "removable", removable);

debian/patches/extra/0014-hw-scsi-lsi53c895a-bump-instruction-limit-in-scripts.patch

@@ -1,48 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Fiona Ebner <f.ebner@proxmox.com>
-Date: Mon, 15 Jul 2024 15:14:03 +0200
-Subject: [PATCH] hw/scsi/lsi53c895a: bump instruction limit in scripts
- processing to fix regression
-
-Commit 9876359990 ("hw/scsi/lsi53c895a: add timer to scripts
-processing") reduced the maximum allowed instruction count by
-a factor of 100 all the way down to 100.
-
-This causes the "Check Point R81.20 Gaia" appliance [0] to fail to
-boot after fully finishing the installation via the appliance's web
-interface (there is already one reboot before that).
-
-With a limit of 150, the appliance still fails to boot, while with a
-limit of 200, it works. Bump to 500 to fix the regression and be on
-the safe side.
-
-Originally reported in the Proxmox community forum[1].
-
-[0]: https://support.checkpoint.com/results/download/124397
-[1]: https://forum.proxmox.com/threads/149772/post-683459
-
-Cc: qemu-stable@nongnu.org
-Fixes: 9876359990 ("hw/scsi/lsi53c895a: add timer to scripts processing")
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Acked-by: Sven Schnelle <svens@stackframe.org>
-Link: https://lore.kernel.org/r/20240715131403.223239-1-f.ebner@proxmox.com
-Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-(cherry picked from commit a4975023fb13cf229bd59c9ceec1b8cbdc5b9a20)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- hw/scsi/lsi53c895a.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
-index eb9828dd5e..f1935e5328 100644
---- a/hw/scsi/lsi53c895a.c
-+++ b/hw/scsi/lsi53c895a.c
-@@ -188,7 +188,7 @@ static const char *names[] = {
- #define LSI_TAG_VALID     (1 << 16)
- 
- /* Maximum instructions to process. */
--#define LSI_MAX_INSN    100
-+#define LSI_MAX_INSN    500
- 
- typedef struct lsi_request {
-     SCSIRequest *req;

debian/patches/extra/0015-block-copy-Fix-missing-graph-lock.patch

@@ -1,38 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Kevin Wolf <kwolf@redhat.com>
-Date: Thu, 27 Jun 2024 20:12:44 +0200
-Subject: [PATCH] block-copy: Fix missing graph lock
-
-The graph lock needs to be held when calling bdrv_co_pdiscard(). Fix
-block_copy_task_entry() to take it for the call.
-
-WITH_GRAPH_RDLOCK_GUARD() was implemented in a weak way because of
-limitations in clang's Thread Safety Analysis at the time, so that it
-only asserts that the lock is held (which allows calling functions that
-require the lock), but we never deal with the unlocking (so even after
-the scope of the guard, the compiler assumes that the lock is still
-held). This is why the compiler didn't catch this locking error.
-
-Signed-off-by: Kevin Wolf <kwolf@redhat.com>
-Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
-(picked from https://lore.kernel.org/qemu-devel/20240627181245.281403-2-kwolf@redhat.com/)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- block/block-copy.c | 4 +++-
- 1 file changed, 3 insertions(+), 1 deletion(-)
-
-diff --git a/block/block-copy.c b/block/block-copy.c
-index 7e3b378528..cc618e4561 100644
---- a/block/block-copy.c
-+++ b/block/block-copy.c
-@@ -595,7 +595,9 @@ static coroutine_fn int block_copy_task_entry(AioTask *task)
-     if (s->discard_source && ret == 0) {
-         int64_t nbytes =
-             MIN(t->req.offset + t->req.bytes, s->len) - t->req.offset;
--        bdrv_co_pdiscard(s->source, t->req.offset, nbytes);
-+        WITH_GRAPH_RDLOCK_GUARD() {
-+            bdrv_co_pdiscard(s->source, t->req.offset, nbytes);
-+        }
-     }
- 
-     return ret;

debian/patches/extra/0016-Revert-qemu-char-do-not-operate-on-sources-from-fina.patch

@@ -1,93 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Sergey Dyasli <sergey.dyasli@nutanix.com>
-Date: Fri, 12 Jul 2024 09:26:59 +0000
-Subject: [PATCH] Revert "qemu-char: do not operate on sources from finalize
- callbacks"
-
-This reverts commit 2b316774f60291f57ca9ecb6a9f0712c532cae34.
-
-After 038b4217884c ("Revert "chardev: use a child source for qio input
-source"") we've been observing the "iwp->src == NULL" assertion
-triggering periodically during the initial capabilities querying by
-libvirtd. One of possible backtraces:
-
-Thread 1 (Thread 0x7f16cd4f0700 (LWP 43858)):
-0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
-1  0x00007f16c6c21e65 in __GI_abort () at abort.c:79
-2  0x00007f16c6c21d39 in __assert_fail_base  at assert.c:92
-3  0x00007f16c6c46e86 in __GI___assert_fail (assertion=assertion@entry=0x562e9bcdaadd "iwp->src == NULL", file=file@entry=0x562e9bcdaac8 "../chardev/char-io.c", line=line@entry=99, function=function@entry=0x562e9bcdab10 <__PRETTY_FUNCTION__.20549> "io_watch_poll_finalize") at assert.c:101
-4  0x0000562e9ba20c2c in io_watch_poll_finalize (source=<optimized out>) at ../chardev/char-io.c:99
-5  io_watch_poll_finalize (source=<optimized out>) at ../chardev/char-io.c:88
-6  0x00007f16c904aae0 in g_source_unref_internal () from /lib64/libglib-2.0.so.0
-7  0x00007f16c904baf9 in g_source_destroy_internal () from /lib64/libglib-2.0.so.0
-8  0x0000562e9ba20db0 in io_remove_watch_poll (source=0x562e9d6720b0) at ../chardev/char-io.c:147
-9  remove_fd_in_watch (chr=chr@entry=0x562e9d5f3800) at ../chardev/char-io.c:153
-10 0x0000562e9ba23ffb in update_ioc_handlers (s=0x562e9d5f3800) at ../chardev/char-socket.c:592
-11 0x0000562e9ba2072f in qemu_chr_fe_set_handlers_full at ../chardev/char-fe.c:279
-12 0x0000562e9ba207a9 in qemu_chr_fe_set_handlers at ../chardev/char-fe.c:304
-13 0x0000562e9ba2ca75 in monitor_qmp_setup_handlers_bh (opaque=0x562e9d4c2c60) at ../monitor/qmp.c:509
-14 0x0000562e9bb6222e in aio_bh_poll (ctx=ctx@entry=0x562e9d4c2f20) at ../util/async.c:216
-15 0x0000562e9bb4de0a in aio_poll (ctx=0x562e9d4c2f20, blocking=blocking@entry=true) at ../util/aio-posix.c:722
-16 0x0000562e9b99dfaa in iothread_run (opaque=0x562e9d4c26f0) at ../iothread.c:63
-17 0x0000562e9bb505a4 in qemu_thread_start (args=0x562e9d4c7ea0) at ../util/qemu-thread-posix.c:543
-18 0x00007f16c70081ca in start_thread (arg=<optimized out>) at pthread_create.c:479
-19 0x00007f16c6c398d3 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
-
-io_remove_watch_poll(), which makes sure that iwp->src is NULL, calls
-g_source_destroy() which finds that iwp->src is not NULL in the finalize
-callback. This can only happen if another thread has managed to trigger
-io_watch_poll_prepare() callback in the meantime.
-
-Move iwp->src destruction back to the finalize callback to prevent the
-described race, and also remove the stale comment. The deadlock glib bug
-was fixed back in 2010 by b35820285668 ("gmain: move finalization of
-GSource outside of context lock").
-
-Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
-Signed-off-by: Sergey Dyasli <sergey.dyasli@nutanix.com>
-Link: https://lore.kernel.org/r/20240712092659.216206-1-sergey.dyasli@nutanix.com
-Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-(cherry picked from commit e0bf95443ee9326d44031373420cf9f3513ee255)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- chardev/char-io.c | 19 +++++--------------
- 1 file changed, 5 insertions(+), 14 deletions(-)
-
-diff --git a/chardev/char-io.c b/chardev/char-io.c
-index dab77b112e..3be17b51ca 100644
---- a/chardev/char-io.c
-+++ b/chardev/char-io.c
-@@ -87,16 +87,12 @@ static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
- 
- static void io_watch_poll_finalize(GSource *source)
- {
--    /*
--     * Due to a glib bug, removing the last reference to a source
--     * inside a finalize callback causes recursive locking (and a
--     * deadlock).  This is not a problem inside other callbacks,
--     * including dispatch callbacks, so we call io_remove_watch_poll
--     * to remove this source.  At this point, iwp->src must
--     * be NULL, or we would leak it.
--     */
-     IOWatchPoll *iwp = io_watch_poll_from_source(source);
--    assert(iwp->src == NULL);
-+    if (iwp->src) {
-+        g_source_destroy(iwp->src);
-+        g_source_unref(iwp->src);
-+        iwp->src = NULL;
-+    }
- }
- 
- static GSourceFuncs io_watch_poll_funcs = {
-@@ -139,11 +135,6 @@ static void io_remove_watch_poll(GSource *source)
-     IOWatchPoll *iwp;
- 
-     iwp = io_watch_poll_from_source(source);
--    if (iwp->src) {
--        g_source_destroy(iwp->src);
--        g_source_unref(iwp->src);
--        iwp->src = NULL;
--    }
-     g_source_destroy(&iwp->parent);
- }
- 

debian/patches/extra/0017-virtio-pci-Fix-the-use-of-an-uninitialized-irqfd.patch

@@ -1,77 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Cindy Lu <lulu@redhat.com>
-Date: Tue, 6 Aug 2024 17:37:12 +0800
-Subject: [PATCH] virtio-pci: Fix the use of an uninitialized irqfd
-
-The crash was reported in MAC OS and NixOS, here is the link for this bug
-https://gitlab.com/qemu-project/qemu/-/issues/2334
-https://gitlab.com/qemu-project/qemu/-/issues/2321
-
-In this bug, they are using the virtio_input device. The guest notifier was
-not supported for this device, The function virtio_pci_set_guest_notifiers()
-was not called, and the vector_irqfd was not initialized.
-
-So the fix is adding the check for vector_irqfd in virtio_pci_get_notifier()
-
-The function virtio_pci_get_notifier() can be used in various devices.
-It could also be called when VIRTIO_CONFIG_S_DRIVER_OK is not set. In this situation,
-the vector_irqfd being NULL is acceptable. We can allow the device continue to boot
-
-If the vector_irqfd still hasn't been initialized after VIRTIO_CONFIG_S_DRIVER_OK
-is set, it means that the function set_guest_notifiers was not called before the
-driver started. This indicates that the device is not using the notifier.
-At this point, we will let the check fail.
-
-This fix is verified in vyatta,MacOS,NixOS,fedora system.
-
-The bt tree for this bug is:
-Thread 6 "CPU 0/KVM" received signal SIGSEGV, Segmentation fault.
-[Switching to Thread 0x7c817be006c0 (LWP 1269146)]
-kvm_virtio_pci_vq_vector_use () at ../qemu-9.0.0/hw/virtio/virtio-pci.c:817
-817         if (irqfd->users == 0) {
-(gdb) thread apply all bt
-...
-Thread 6 (Thread 0x7c817be006c0 (LWP 1269146) "CPU 0/KVM"):
-0  kvm_virtio_pci_vq_vector_use () at ../qemu-9.0.0/hw/virtio/virtio-pci.c:817
-1  kvm_virtio_pci_vector_use_one () at ../qemu-9.0.0/hw/virtio/virtio-pci.c:893
-2  0x00005983657045e2 in memory_region_write_accessor () at ../qemu-9.0.0/system/memory.c:497
-3  0x0000598365704ba6 in access_with_adjusted_size () at ../qemu-9.0.0/system/memory.c:573
-4  0x0000598365705059 in memory_region_dispatch_write () at ../qemu-9.0.0/system/memory.c:1528
-5  0x00005983659b8e1f in flatview_write_continue_step.isra.0 () at ../qemu-9.0.0/system/physmem.c:2713
-6  0x000059836570ba7d in flatview_write_continue () at ../qemu-9.0.0/system/physmem.c:2743
-7  flatview_write () at ../qemu-9.0.0/system/physmem.c:2774
-8  0x000059836570bb76 in address_space_write () at ../qemu-9.0.0/system/physmem.c:2894
-9  0x0000598365763afe in address_space_rw () at ../qemu-9.0.0/system/physmem.c:2904
-10 kvm_cpu_exec () at ../qemu-9.0.0/accel/kvm/kvm-all.c:2917
-11 0x000059836576656e in kvm_vcpu_thread_fn () at ../qemu-9.0.0/accel/kvm/kvm-accel-ops.c:50
-12 0x0000598365926ca8 in qemu_thread_start () at ../qemu-9.0.0/util/qemu-thread-posix.c:541
-13 0x00007c8185bcd1cf in ??? () at /usr/lib/libc.so.6
-14 0x00007c8185c4e504 in clone () at /usr/lib/libc.so.6
-
-Fixes: 2ce6cff94d ("virtio-pci: fix use of a released vector")
-Cc: qemu-stable@nongnu.org
-Signed-off-by: Cindy Lu <lulu@redhat.com>
-Message-Id: <20240806093715.65105-1-lulu@redhat.com>
-Acked-by: Jason Wang <jasowang@redhat.com>
-Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
-Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-(cherry picked from commit a8e63ff289d137197ad7a701a587cc432872d798)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- hw/virtio/virtio-pci.c | 3 +++
- 1 file changed, 3 insertions(+)
-
-diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
-index e04218a9fb..389bab003f 100644
---- a/hw/virtio/virtio-pci.c
-+++ b/hw/virtio/virtio-pci.c
-@@ -860,6 +860,9 @@ static int virtio_pci_get_notifier(VirtIOPCIProxy *proxy, int queue_no,
-     VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
-     VirtQueue *vq;
- 
-+    if (!proxy->vector_irqfd && vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)
-+        return -1;
-+
-     if (queue_no == VIRTIO_CONFIG_IRQ_IDX) {
-         *n = virtio_config_get_guest_notifier(vdev);
-         *vector = vdev->config_vector;

debian/patches/extra/0018-virtio-net-Ensure-queue-index-fits-with-RSS.patch

@@ -1,35 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Akihiko Odaki <akihiko.odaki@daynix.com>
-Date: Mon, 1 Jul 2024 20:58:04 +0900
-Subject: [PATCH] virtio-net: Ensure queue index fits with RSS
-
-Ensure the queue index points to a valid queue when software RSS
-enabled. The new calculation matches with the behavior of Linux's TAP
-device with the RSS eBPF program.
-
-Fixes: 4474e37a5b3a ("virtio-net: implement RX RSS processing")
-Reported-by: Zhibin Hu <huzhibin5@huawei.com>
-Cc: qemu-stable@nongnu.org
-Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
-Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
-Signed-off-by: Jason Wang <jasowang@redhat.com>
-(cherry picked from commit f1595ceb9aad36a6c1da95bcb77ab9509b38822d)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- hw/net/virtio-net.c | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
-index 3644bfd91b..f48588638d 100644
---- a/hw/net/virtio-net.c
-+++ b/hw/net/virtio-net.c
-@@ -1949,7 +1949,8 @@ static ssize_t virtio_net_receive_rcu(NetClientState *nc, const uint8_t *buf,
-     if (!no_rss && n->rss_data.enabled && n->rss_data.enabled_software_rss) {
-         int index = virtio_net_process_rss(nc, buf, size);
-         if (index >= 0) {
--            NetClientState *nc2 = qemu_get_subqueue(n->nic, index);
-+            NetClientState *nc2 =
-+                qemu_get_subqueue(n->nic, index % n->curr_queue_pairs);
-             return virtio_net_receive_rcu(nc2, buf, size, true);
-         }
-     }

debian/patches/extra/0019-virtio-net-Fix-network-stall-at-the-host-side-waitin.patch

@@ -1,338 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: thomas <east.moutain.yang@gmail.com>
-Date: Fri, 12 Jul 2024 11:10:53 +0800
-Subject: [PATCH] virtio-net: Fix network stall at the host side waiting for
- kick
-
-Patch 06b12970174 ("virtio-net: fix network stall under load")
-added double-check to test whether the available buffer size
-can satisfy the request or not, in case the guest has added
-some buffers to the avail ring simultaneously after the first
-check. It will be lucky if the available buffer size becomes
-okay after the double-check, then the host can send the packet
-to the guest. If the buffer size still can't satisfy the request,
-even if the guest has added some buffers, viritio-net would
-stall at the host side forever.
-
-The patch enables notification and checks whether the guest has
-added some buffers since last check of available buffers when
-the available buffers are insufficient. If no buffer is added,
-return false, else recheck the available buffers in the loop.
-If the available buffers are sufficient, disable notification
-and return true.
-
-Changes:
-1. Change the return type of virtqueue_get_avail_bytes() from void
-   to int, it returns an opaque that represents the shadow_avail_idx
-   of the virtqueue on success, else -1 on error.
-2. Add a new API: virtio_queue_enable_notification_and_check(),
-   it takes an opaque as input arg which is returned from
-   virtqueue_get_avail_bytes(). It enables notification firstly,
-   then checks whether the guest has added some buffers since
-   last check of available buffers or not by virtio_queue_poll(),
-   return ture if yes.
-
-The patch also reverts patch "06b12970174".
-
-The case below can reproduce the stall.
-
-                                       Guest 0
-                                     +--------+
-                                     | iperf  |
-                    ---------------> | server |
-         Host       |                +--------+
-       +--------+   |                    ...
-       | iperf  |----
-       | client |----                  Guest n
-       +--------+   |                +--------+
-                    |                | iperf  |
-                    ---------------> | server |
-                                     +--------+
-
-Boot many guests from qemu with virtio network:
- qemu ... -netdev tap,id=net_x \
-    -device virtio-net-pci-non-transitional,\
-    iommu_platform=on,mac=xx:xx:xx:xx:xx:xx,netdev=net_x
-
-Each guest acts as iperf server with commands below:
- iperf3 -s -D -i 10 -p 8001
- iperf3 -s -D -i 10 -p 8002
-
-The host as iperf client:
- iperf3 -c guest_IP -p 8001 -i 30 -w 256k -P 20 -t 40000
- iperf3 -c guest_IP -p 8002 -i 30 -w 256k -P 20 -t 40000
-
-After some time, the host loses connection to the guest,
-the guest can send packet to the host, but can't receive
-packet from the host.
-
-It's more likely to happen if SWIOTLB is enabled in the guest,
-allocating and freeing bounce buffer takes some CPU ticks,
-copying from/to bounce buffer takes more CPU ticks, compared
-with that there is no bounce buffer in the guest.
-Once the rate of producing packets from the host approximates
-the rate of receiveing packets in the guest, the guest would
-loop in NAPI.
-
-         receive packets    ---
-               |             |
-               v             |
-           free buf      virtnet_poll
-               |             |
-               v             |
-     add buf to avail ring  ---
-               |
-               |  need kick the host?
-               |  NAPI continues
-               v
-         receive packets    ---
-               |             |
-               v             |
-           free buf      virtnet_poll
-               |             |
-               v             |
-     add buf to avail ring  ---
-               |
-               v
-              ...           ...
-
-On the other hand, the host fetches free buf from avail
-ring, if the buf in the avail ring is not enough, the
-host notifies the guest the event by writing the avail
-idx read from avail ring to the event idx of used ring,
-then the host goes to sleep, waiting for the kick signal
-from the guest.
-
-Once the guest finds the host is waiting for kick singal
-(in virtqueue_kick_prepare_split()), it kicks the host.
-
-The host may stall forever at the sequences below:
-
-         Host                        Guest
-     ------------                 -----------
- fetch buf, send packet           receive packet ---
-         ...                          ...         |
- fetch buf, send packet             add buf       |
-         ...                        add buf   virtnet_poll
-    buf not enough      avail idx-> add buf       |
-    read avail idx                  add buf       |
-                                    add buf      ---
-                                  receive packet ---
-    write event idx                   ...         |
-    wait for kick                   add buf   virtnet_poll
-                                      ...         |
-                                                 ---
-                                 no more packet, exit NAPI
-
-In the first loop of NAPI above, indicated in the range of
-virtnet_poll above, the host is sending packets while the
-guest is receiving packets and adding buffers.
- step 1: The buf is not enough, for example, a big packet
-         needs 5 buf, but the available buf count is 3.
-         The host read current avail idx.
- step 2: The guest adds some buf, then checks whether the
-         host is waiting for kick signal, not at this time.
-         The used ring is not empty, the guest continues
-         the second loop of NAPI.
- step 3: The host writes the avail idx read from avail
-         ring to used ring as event idx via
-         virtio_queue_set_notification(q->rx_vq, 1).
- step 4: At the end of the second loop of NAPI, recheck
-         whether kick is needed, as the event idx in the
-         used ring written by the host is beyound the
-         range of kick condition, the guest will not
-         send kick signal to the host.
-
-Fixes: 06b12970174 ("virtio-net: fix network stall under load")
-Cc: qemu-stable@nongnu.org
-Signed-off-by: Wencheng Yang <east.moutain.yang@gmail.com>
-Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
-Signed-off-by: Jason Wang <jasowang@redhat.com>
-(cherry picked from commit f937309fbdbb48c354220a3e7110c202ae4aa7fa)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- hw/net/virtio-net.c        | 28 ++++++++++-------
- hw/virtio/virtio.c         | 64 +++++++++++++++++++++++++++++++++++---
- include/hw/virtio/virtio.h | 21 +++++++++++--
- 3 files changed, 94 insertions(+), 19 deletions(-)
-
-diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
-index f48588638d..d4b979d343 100644
---- a/hw/net/virtio-net.c
-+++ b/hw/net/virtio-net.c
-@@ -1680,24 +1680,28 @@ static bool virtio_net_can_receive(NetClientState *nc)
- 
- static int virtio_net_has_buffers(VirtIONetQueue *q, int bufsize)
- {
-+    int opaque;
-+    unsigned int in_bytes;
-     VirtIONet *n = q->n;
--    if (virtio_queue_empty(q->rx_vq) ||
--        (n->mergeable_rx_bufs &&
--         !virtqueue_avail_bytes(q->rx_vq, bufsize, 0))) {
--        virtio_queue_set_notification(q->rx_vq, 1);
--
--        /* To avoid a race condition where the guest has made some buffers
--         * available after the above check but before notification was
--         * enabled, check for available buffers again.
--         */
--        if (virtio_queue_empty(q->rx_vq) ||
--            (n->mergeable_rx_bufs &&
--             !virtqueue_avail_bytes(q->rx_vq, bufsize, 0))) {
-+
-+    while (virtio_queue_empty(q->rx_vq) || n->mergeable_rx_bufs) {
-+        opaque = virtqueue_get_avail_bytes(q->rx_vq, &in_bytes, NULL,
-+                                           bufsize, 0);
-+        /* Buffer is enough, disable notifiaction */
-+        if (bufsize <= in_bytes) {
-+            break;
-+        }
-+
-+        if (virtio_queue_enable_notification_and_check(q->rx_vq, opaque)) {
-+            /* Guest has added some buffers, try again */
-+            continue;
-+        } else {
-             return 0;
-         }
-     }
- 
-     virtio_queue_set_notification(q->rx_vq, 0);
-+
-     return 1;
- }
- 
-diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
-index fd2dfe3a6b..08fba6b2d8 100644
---- a/hw/virtio/virtio.c
-+++ b/hw/virtio/virtio.c
-@@ -743,6 +743,60 @@ int virtio_queue_empty(VirtQueue *vq)
-     }
- }
- 
-+static bool virtio_queue_split_poll(VirtQueue *vq, unsigned shadow_idx)
-+{
-+    if (unlikely(!vq->vring.avail)) {
-+        return false;
-+    }
-+
-+    return (uint16_t)shadow_idx != vring_avail_idx(vq);
-+}
-+
-+static bool virtio_queue_packed_poll(VirtQueue *vq, unsigned shadow_idx)
-+{
-+    VRingPackedDesc desc;
-+    VRingMemoryRegionCaches *caches;
-+
-+    if (unlikely(!vq->vring.desc)) {
-+        return false;
-+    }
-+
-+    caches = vring_get_region_caches(vq);
-+    if (!caches) {
-+        return false;
-+    }
-+
-+    vring_packed_desc_read(vq->vdev, &desc, &caches->desc,
-+                           shadow_idx, true);
-+
-+    return is_desc_avail(desc.flags, vq->shadow_avail_wrap_counter);
-+}
-+
-+static bool virtio_queue_poll(VirtQueue *vq, unsigned shadow_idx)
-+{
-+    if (virtio_device_disabled(vq->vdev)) {
-+        return false;
-+    }
-+
-+    if (virtio_vdev_has_feature(vq->vdev, VIRTIO_F_RING_PACKED)) {
-+        return virtio_queue_packed_poll(vq, shadow_idx);
-+    } else {
-+        return virtio_queue_split_poll(vq, shadow_idx);
-+    }
-+}
-+
-+bool virtio_queue_enable_notification_and_check(VirtQueue *vq,
-+                                                int opaque)
-+{
-+    virtio_queue_set_notification(vq, 1);
-+
-+    if (opaque >= 0) {
-+        return virtio_queue_poll(vq, (unsigned)opaque);
-+    } else {
-+        return false;
-+    }
-+}
-+
- static void virtqueue_unmap_sg(VirtQueue *vq, const VirtQueueElement *elem,
-                                unsigned int len)
- {
-@@ -1330,9 +1384,9 @@ err:
-     goto done;
- }
- 
--void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
--                               unsigned int *out_bytes,
--                               unsigned max_in_bytes, unsigned max_out_bytes)
-+int virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
-+                              unsigned int *out_bytes, unsigned max_in_bytes,
-+                              unsigned max_out_bytes)
- {
-     uint16_t desc_size;
-     VRingMemoryRegionCaches *caches;
-@@ -1365,7 +1419,7 @@ void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
-                                         caches);
-     }
- 
--    return;
-+    return (int)vq->shadow_avail_idx;
- err:
-     if (in_bytes) {
-         *in_bytes = 0;
-@@ -1373,6 +1427,8 @@ err:
-     if (out_bytes) {
-         *out_bytes = 0;
-     }
-+
-+    return -1;
- }
- 
- int virtqueue_avail_bytes(VirtQueue *vq, unsigned int in_bytes,
-diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
-index 2eafad17b8..8b4da92889 100644
---- a/include/hw/virtio/virtio.h
-+++ b/include/hw/virtio/virtio.h
-@@ -271,9 +271,13 @@ void qemu_put_virtqueue_element(VirtIODevice *vdev, QEMUFile *f,
-                                 VirtQueueElement *elem);
- int virtqueue_avail_bytes(VirtQueue *vq, unsigned int in_bytes,
-                           unsigned int out_bytes);
--void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
--                               unsigned int *out_bytes,
--                               unsigned max_in_bytes, unsigned max_out_bytes);
-+/**
-+ * Return <0 on error or an opaque >=0 to pass to
-+ * virtio_queue_enable_notification_and_check on success.
-+ */
-+int virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
-+                              unsigned int *out_bytes, unsigned max_in_bytes,
-+                              unsigned max_out_bytes);
- 
- void virtio_notify_irqfd(VirtIODevice *vdev, VirtQueue *vq);
- void virtio_notify(VirtIODevice *vdev, VirtQueue *vq);
-@@ -307,6 +311,17 @@ int virtio_queue_ready(VirtQueue *vq);
- 
- int virtio_queue_empty(VirtQueue *vq);
- 
-+/**
-+ * Enable notification and check whether guest has added some
-+ * buffers since last call to virtqueue_get_avail_bytes.
-+ *
-+ * @opaque: value returned from virtqueue_get_avail_bytes
-+ */
-+bool virtio_queue_enable_notification_and_check(VirtQueue *vq,
-+                                                int opaque);
-+
-+void virtio_queue_set_shadow_avail_idx(VirtQueue *vq, uint16_t idx);
-+
- /* Host binding interface.  */
- 
- uint32_t virtio_config_readb(VirtIODevice *vdev, uint32_t addr);

debian/patches/extra/0020-net-Reinstate-net-nic-model-help-output-as-documente.patch

@@ -1,70 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: David Woodhouse <dwmw@amazon.co.uk>
-Date: Tue, 9 Jul 2024 13:34:44 +0100
-Subject: [PATCH] net: Reinstate '-net nic, model=help' output as documented in
- man page
-
-While refactoring the NIC initialization code, I broke '-net nic,model=help'
-which no longer outputs a list of available NIC models.
-
-Fixes: 2cdeca04adab ("net: report list of available models according to platform")
-Cc: qemu-stable@nongnu.org
-Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
-Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
-Signed-off-by: Jason Wang <jasowang@redhat.com>
-(cherry picked from commit 64f75f57f9d2c8c12ac6d9355fa5d3a2af5879ca)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- net/net.c | 25 ++++++++++++++++++++++---
- 1 file changed, 22 insertions(+), 3 deletions(-)
-
-diff --git a/net/net.c b/net/net.c
-index a2f0c828bb..e6ca2529bb 100644
---- a/net/net.c
-+++ b/net/net.c
-@@ -1150,6 +1150,21 @@ NICInfo *qemu_find_nic_info(const char *typename, bool match_default,
-     return NULL;
- }
- 
-+static bool is_nic_model_help_option(const char *model)
-+{
-+    if (model && is_help_option(model)) {
-+        /*
-+         * Trigger the help output by instantiating the hash table which
-+         * will gather tha available models as they get registered.
-+         */
-+        if (!nic_model_help) {
-+            nic_model_help = g_hash_table_new_full(g_str_hash, g_str_equal,
-+                                                   g_free, NULL);
-+        }
-+        return true;
-+    }
-+    return false;
-+}
- 
- /* "I have created a device. Please configure it if you can" */
- bool qemu_configure_nic_device(DeviceState *dev, bool match_default,
-@@ -1733,6 +1748,12 @@ void net_check_clients(void)
- 
- static int net_init_client(void *dummy, QemuOpts *opts, Error **errp)
- {
-+    const char *model = qemu_opt_get_del(opts, "model");
-+
-+    if (is_nic_model_help_option(model)) {
-+        return 0;
-+    }
-+
-     return net_client_init(opts, false, errp);
- }
- 
-@@ -1789,9 +1810,7 @@ static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp)
-     memset(ni, 0, sizeof(*ni));
-     ni->model = qemu_opt_get_del(opts, "model");
- 
--    if (!nic_model_help && !g_strcmp0(ni->model, "help")) {
--        nic_model_help = g_hash_table_new_full(g_str_hash, g_str_equal,
--                                               g_free, NULL);
-+    if (is_nic_model_help_option(ni->model)) {
-         return 0;
-     }
- 

debian/patches/extra/0021-net-Fix-net-nic-model-for-non-help-arguments.patch

@@ -1,32 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: David Woodhouse <dwmw@amazon.co.uk>
-Date: Tue, 6 Aug 2024 18:21:37 +0100
-Subject: [PATCH] net: Fix '-net nic,model=' for non-help arguments
-
-Oops, don't *delete* the model option when checking for 'help'.
-
-Fixes: 64f75f57f9d2 ("net: Reinstate '-net nic, model=help' output as documented in man page")
-Reported-by: Hans <sungdgdhtryrt@gmail.com>
-Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
-Cc: qemu-stable@nongnu.org
-Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
-Signed-off-by: Jason Wang <jasowang@redhat.com>
-(cherry picked from commit fa62cb989a9146c82f8f172715042852f5d36200)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- net/net.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/net/net.c b/net/net.c
-index e6ca2529bb..897bb936cf 100644
---- a/net/net.c
-+++ b/net/net.c
-@@ -1748,7 +1748,7 @@ void net_check_clients(void)
- 
- static int net_init_client(void *dummy, QemuOpts *opts, Error **errp)
- {
--    const char *model = qemu_opt_get_del(opts, "model");
-+    const char *model = qemu_opt_get(opts, "model");
- 
-     if (is_nic_model_help_option(model)) {
-         return 0;

debian/patches/extra/0022-target-arm-Don-t-assert-for-128-bit-tile-accesses-wh.patch

@@ -1,57 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Peter Maydell <peter.maydell@linaro.org>
-Date: Mon, 22 Jul 2024 18:29:54 +0100
-Subject: [PATCH] target/arm: Don't assert for 128-bit tile accesses when SVL
- is 128
-
-For an instruction which accesses a 128-bit element tile when
-the SVL is also 128 (for example MOV z0.Q, p0/M, ZA0H.Q[w0,0]),
-we will assert in get_tile_rowcol():
-
-qemu-system-aarch64: ../../tcg/tcg-op.c:926: tcg_gen_deposit_z_i32: Assertion `len > 0' failed.
-
-This happens because we calculate
-    len = ctz32(streaming_vec_reg_size(s)) - esz;$
-but if the SVL and the element size are the same len is 0, and
-the deposit operation asserts.
-
-In this case the ZA storage contains exactly one 128 bit
-element ZA tile, and the horizontal or vertical slice is just
-that tile. This means that regardless of the index value in
-the Ws register, we always access that tile. (In pseudocode terms,
-we calculate (index + offset) MOD 1, which is 0.)
-
-Special case the len == 0 case to avoid hitting the assertion
-in tcg_gen_deposit_z_i32().
-
-Cc: qemu-stable@nongnu.org
-Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
-Message-id: 20240722172957.1041231-2-peter.maydell@linaro.org
-(cherry picked from commit 56f1c0db928aae0b83fd91c89ddb226b137e2b21)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- target/arm/tcg/translate-sme.c | 10 +++++++++-
- 1 file changed, 9 insertions(+), 1 deletion(-)
-
-diff --git a/target/arm/tcg/translate-sme.c b/target/arm/tcg/translate-sme.c
-index 185a8a917b..a50a419af2 100644
---- a/target/arm/tcg/translate-sme.c
-+++ b/target/arm/tcg/translate-sme.c
-@@ -49,7 +49,15 @@ static TCGv_ptr get_tile_rowcol(DisasContext *s, int esz, int rs,
-     /* Prepare a power-of-two modulo via extraction of @len bits. */
-     len = ctz32(streaming_vec_reg_size(s)) - esz;
- 
--    if (vertical) {
-+    if (!len) {
-+        /*
-+         * SVL is 128 and the element size is 128. There is exactly
-+         * one 128x128 tile in the ZA storage, and so we calculate
-+         * (Rs + imm) MOD 1, which is always 0. We need to special case
-+         * this because TCG doesn't allow deposit ops with len 0.
-+         */
-+        tcg_gen_movi_i32(tmp, 0);
-+    } else if (vertical) {
-         /*
-          * Compute the byte offset of the index within the tile:
-          *     (index % (svl / size)) * size

debian/patches/extra/0023-target-arm-Fix-UMOPA-UMOPS-of-16-bit-values.patch

@@ -1,59 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Peter Maydell <peter.maydell@linaro.org>
-Date: Mon, 22 Jul 2024 18:29:55 +0100
-Subject: [PATCH] target/arm: Fix UMOPA/UMOPS of 16-bit values
-
-The UMOPA/UMOPS instructions are supposed to multiply unsigned 8 or
-16 bit elements and accumulate the products into a 64-bit element.
-In the Arm ARM pseudocode, this is done with the usual
-infinite-precision signed arithmetic.  However our implementation
-doesn't quite get it right, because in the DEF_IMOP_64() macro we do:
-  sum += (NTYPE)(n >> 0) * (MTYPE)(m >> 0);
-
-where NTYPE and MTYPE are uint16_t or int16_t.  In the uint16_t case,
-the C usual arithmetic conversions mean the values are converted to
-"int" type and the multiply is done as a 32-bit multiply.  This means
-that if the inputs are, for example, 0xffff and 0xffff then the
-result is 0xFFFE0001 as an int, which is then promoted to uint64_t
-for the accumulation into sum; this promotion incorrectly sign
-extends the multiply.
-
-Avoid the incorrect sign extension by casting to int64_t before
-the multiply, so we do the multiply as 64-bit signed arithmetic,
-which is a type large enough that the multiply can never
-overflow into the sign bit.
-
-(The equivalent 8-bit operations in DEF_IMOP_32() are fine, because
-the 8-bit multiplies can never overflow into the sign bit of a
-32-bit integer.)
-
-Cc: qemu-stable@nongnu.org
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2372
-Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
-Message-id: 20240722172957.1041231-3-peter.maydell@linaro.org
-(cherry picked from commit ea3f5a90f036734522e9af3bffd77e69e9f47355)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- target/arm/tcg/sme_helper.c | 8 ++++----
- 1 file changed, 4 insertions(+), 4 deletions(-)
-
-diff --git a/target/arm/tcg/sme_helper.c b/target/arm/tcg/sme_helper.c
-index 5a6dd76489..f9001f5213 100644
---- a/target/arm/tcg/sme_helper.c
-+++ b/target/arm/tcg/sme_helper.c
-@@ -1146,10 +1146,10 @@ static uint64_t NAME(uint64_t n, uint64_t m, uint64_t a, uint8_t p, bool neg) \
-     uint64_t sum = 0;                                                       \
-     /* Apply P to N as a mask, making the inactive elements 0. */           \
-     n &= expand_pred_h(p);                                                  \
--    sum += (NTYPE)(n >> 0) * (MTYPE)(m >> 0);                               \
--    sum += (NTYPE)(n >> 16) * (MTYPE)(m >> 16);                             \
--    sum += (NTYPE)(n >> 32) * (MTYPE)(m >> 32);                             \
--    sum += (NTYPE)(n >> 48) * (MTYPE)(m >> 48);                             \
-+    sum += (int64_t)(NTYPE)(n >> 0) * (MTYPE)(m >> 0);                      \
-+    sum += (int64_t)(NTYPE)(n >> 16) * (MTYPE)(m >> 16);                    \
-+    sum += (int64_t)(NTYPE)(n >> 32) * (MTYPE)(m >> 32);                    \
-+    sum += (int64_t)(NTYPE)(n >> 48) * (MTYPE)(m >> 48);                    \
-     return neg ? a - sum : a + sum;                                         \
- }
- 

debian/patches/extra/0024-target-arm-Avoid-shifts-by-1-in-tszimm_shr-and-tszim.patch

@@ -1,62 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Peter Maydell <peter.maydell@linaro.org>
-Date: Mon, 22 Jul 2024 18:29:56 +0100
-Subject: [PATCH] target/arm: Avoid shifts by -1 in tszimm_shr() and
- tszimm_shl()
-
-The function tszimm_esz() returns a shift amount, or possibly -1 in
-certain cases that correspond to unallocated encodings in the
-instruction set.  We catch these later in the trans_ functions
-(generally with an "a-esz < 0" check), but before we do the
-decodetree-generated code will also call tszimm_shr() or tszimm_sl(),
-which will use the tszimm_esz() return value as a shift count without
-checking that it is not negative, which is undefined behaviour.
-
-Avoid the UB by checking the return value in tszimm_shr() and
-tszimm_shl().
-
-Cc: qemu-stable@nongnu.org
-Resolves: Coverity CID 1547617, 1547694
-Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
-Message-id: 20240722172957.1041231-4-peter.maydell@linaro.org
-(cherry picked from commit 76916dfa89e8900639c1055c07a295c06628a0bc)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- target/arm/tcg/translate-sve.c | 18 ++++++++++++++++--
- 1 file changed, 16 insertions(+), 2 deletions(-)
-
-diff --git a/target/arm/tcg/translate-sve.c b/target/arm/tcg/translate-sve.c
-index ada05aa530..466a19c25a 100644
---- a/target/arm/tcg/translate-sve.c
-+++ b/target/arm/tcg/translate-sve.c
-@@ -50,13 +50,27 @@ static int tszimm_esz(DisasContext *s, int x)
- 
- static int tszimm_shr(DisasContext *s, int x)
- {
--    return (16 << tszimm_esz(s, x)) - x;
-+    /*
-+     * We won't use the tszimm_shr() value if tszimm_esz() returns -1 (the
-+     * trans function will check for esz < 0), so we can return any
-+     * value we like from here in that case as long as we avoid UB.
-+     */
-+    int esz = tszimm_esz(s, x);
-+    if (esz < 0) {
-+        return esz;
-+    }
-+    return (16 << esz) - x;
- }
- 
- /* See e.g. LSL (immediate, predicated).  */
- static int tszimm_shl(DisasContext *s, int x)
- {
--    return x - (8 << tszimm_esz(s, x));
-+    /* As with tszimm_shr(), value will be unused if esz < 0 */
-+    int esz = tszimm_esz(s, x);
-+    if (esz < 0) {
-+        return esz;
-+    }
-+    return x - (8 << esz);
- }
- 
- /* The SH bit is in bit 8.  Extract the low 8 and shift.  */

debian/patches/extra/0025-target-arm-Ignore-SMCR_EL2.LEN-and-SVCR_EL2.LEN-if-E.patch

@@ -1,41 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Peter Maydell <peter.maydell@linaro.org>
-Date: Mon, 22 Jul 2024 18:29:57 +0100
-Subject: [PATCH] target/arm: Ignore SMCR_EL2.LEN and SVCR_EL2.LEN if EL2 is
- not enabled
-
-When determining the current vector length, the SMCR_EL2.LEN and
-SVCR_EL2.LEN settings should only be considered if EL2 is enabled
-(compare the pseudocode CurrentSVL and CurrentNSVL which call
-EL2Enabled()).
-
-We were checking against ARM_FEATURE_EL2 rather than calling
-arm_is_el2_enabled(), which meant that we would look at
-SMCR_EL2/SVCR_EL2 when in Secure EL1 or Secure EL0 even if Secure EL2
-was not enabled.
-
-Use the correct check in sve_vqm1_for_el_sm().
-
-Cc: qemu-stable@nongnu.org
-Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
-Message-id: 20240722172957.1041231-5-peter.maydell@linaro.org
-(cherry picked from commit f573ac059ed060234fcef4299fae9e500d357c33)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- target/arm/helper.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/target/arm/helper.c b/target/arm/helper.c
-index a620481d7c..42044ae14b 100644
---- a/target/arm/helper.c
-+++ b/target/arm/helper.c
-@@ -7191,7 +7191,7 @@ uint32_t sve_vqm1_for_el_sm(CPUARMState *env, int el, bool sm)
-     if (el <= 1 && !el_is_in_host(env, el)) {
-         len = MIN(len, 0xf & (uint32_t)cr[1]);
-     }
--    if (el <= 2 && arm_feature(env, ARM_FEATURE_EL2)) {
-+    if (el <= 2 && arm_is_el2_enabled(env)) {
-         len = MIN(len, 0xf & (uint32_t)cr[2]);
-     }
-     if (arm_feature(env, ARM_FEATURE_EL3)) {

debian/patches/extra/0026-target-arm-Handle-denormals-correctly-for-FMOPA-wide.patch

@@ -1,164 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Peter Maydell <peter.maydell@linaro.org>
-Date: Thu, 1 Aug 2024 10:15:03 +0100
-Subject: [PATCH] target/arm: Handle denormals correctly for FMOPA (widening)
-
-The FMOPA (widening) SME instruction takes pairs of half-precision
-floating point values, widens them to single-precision, does a
-two-way dot product and accumulates the results into a
-single-precision destination.  We don't quite correctly handle the
-FPCR bits FZ and FZ16 which control flushing of denormal inputs and
-outputs.  This is because at the moment we pass a single float_status
-value to the helper function, which then uses that configuration for
-all the fp operations it does.  However, because the inputs to this
-operation are float16 and the outputs are float32 we need to use the
-fp_status_f16 for the float16 input widening but the normal fp_status
-for everything else.  Otherwise we will apply the flushing control
-FPCR.FZ16 to the 32-bit output rather than the FPCR.FZ control, and
-incorrectly flush a denormal output to zero when we should not (or
-vice-versa).
-
-(In commit 207d30b5fdb5b we tried to fix the FZ handling but
-didn't get it right, switching from "use FPCR.FZ for everything" to
-"use FPCR.FZ16 for everything".)
-
-Pass the CPU env to the sme_fmopa_h helper instead of an fp_status
-pointer, and have the helper pass an extra fp_status into the
-f16_dotadd() function so that we can use the right status for the
-right parts of this operation.
-
-Cc: qemu-stable@nongnu.org
-Fixes: 207d30b5fdb5 ("target/arm: Use FPST_F16 for SME FMOPA (widening)")
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2373
-Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
-(cherry picked from commit 55f9f4ee018c5ccea81d8c8c586756d7711ae46f)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- target/arm/tcg/helper-sme.h    |  2 +-
- target/arm/tcg/sme_helper.c    | 39 +++++++++++++++++++++++-----------
- target/arm/tcg/translate-sme.c | 25 ++++++++++++++++++++--
- 3 files changed, 51 insertions(+), 15 deletions(-)
-
-diff --git a/target/arm/tcg/helper-sme.h b/target/arm/tcg/helper-sme.h
-index 27eef49a11..d22bf9d21b 100644
---- a/target/arm/tcg/helper-sme.h
-+++ b/target/arm/tcg/helper-sme.h
-@@ -121,7 +121,7 @@ DEF_HELPER_FLAGS_5(sme_addha_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
- DEF_HELPER_FLAGS_5(sme_addva_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
- 
- DEF_HELPER_FLAGS_7(sme_fmopa_h, TCG_CALL_NO_RWG,
--                   void, ptr, ptr, ptr, ptr, ptr, ptr, i32)
-+                   void, ptr, ptr, ptr, ptr, ptr, env, i32)
- DEF_HELPER_FLAGS_7(sme_fmopa_s, TCG_CALL_NO_RWG,
-                    void, ptr, ptr, ptr, ptr, ptr, ptr, i32)
- DEF_HELPER_FLAGS_7(sme_fmopa_d, TCG_CALL_NO_RWG,
-diff --git a/target/arm/tcg/sme_helper.c b/target/arm/tcg/sme_helper.c
-index f9001f5213..3906bb51c0 100644
---- a/target/arm/tcg/sme_helper.c
-+++ b/target/arm/tcg/sme_helper.c
-@@ -976,12 +976,23 @@ static inline uint32_t f16mop_adj_pair(uint32_t pair, uint32_t pg, uint32_t neg)
- }
- 
- static float32 f16_dotadd(float32 sum, uint32_t e1, uint32_t e2,
--                          float_status *s_std, float_status *s_odd)
-+                          float_status *s_f16, float_status *s_std,
-+                          float_status *s_odd)
- {
--    float64 e1r = float16_to_float64(e1 & 0xffff, true, s_std);
--    float64 e1c = float16_to_float64(e1 >> 16, true, s_std);
--    float64 e2r = float16_to_float64(e2 & 0xffff, true, s_std);
--    float64 e2c = float16_to_float64(e2 >> 16, true, s_std);
-+    /*
-+     * We need three different float_status for different parts of this
-+     * operation:
-+     *  - the input conversion of the float16 values must use the
-+     *    f16-specific float_status, so that the FPCR.FZ16 control is applied
-+     *  - operations on float32 including the final accumulation must use
-+     *    the normal float_status, so that FPCR.FZ is applied
-+     *  - we have pre-set-up copy of s_std which is set to round-to-odd,
-+     *    for the multiply (see below)
-+     */
-+    float64 e1r = float16_to_float64(e1 & 0xffff, true, s_f16);
-+    float64 e1c = float16_to_float64(e1 >> 16, true, s_f16);
-+    float64 e2r = float16_to_float64(e2 & 0xffff, true, s_f16);
-+    float64 e2c = float16_to_float64(e2 >> 16, true, s_f16);
-     float64 t64;
-     float32 t32;
- 
-@@ -1003,20 +1014,23 @@ static float32 f16_dotadd(float32 sum, uint32_t e1, uint32_t e2,
- }
- 
- void HELPER(sme_fmopa_h)(void *vza, void *vzn, void *vzm, void *vpn,
--                         void *vpm, void *vst, uint32_t desc)
-+                         void *vpm, CPUARMState *env, uint32_t desc)
- {
-     intptr_t row, col, oprsz = simd_maxsz(desc);
-     uint32_t neg = simd_data(desc) * 0x80008000u;
-     uint16_t *pn = vpn, *pm = vpm;
--    float_status fpst_odd, fpst_std;
-+    float_status fpst_odd, fpst_std, fpst_f16;
- 
-     /*
--     * Make a copy of float_status because this operation does not
--     * update the cumulative fp exception status.  It also produces
--     * default nans.  Make a second copy with round-to-odd -- see above.
-+     * Make copies of fp_status and fp_status_f16, because this operation
-+     * does not update the cumulative fp exception status.  It also
-+     * produces default NaNs. We also need a second copy of fp_status with
-+     * round-to-odd -- see above.
-      */
--    fpst_std = *(float_status *)vst;
-+    fpst_f16 = env->vfp.fp_status_f16;
-+    fpst_std = env->vfp.fp_status;
-     set_default_nan_mode(true, &fpst_std);
-+    set_default_nan_mode(true, &fpst_f16);
-     fpst_odd = fpst_std;
-     set_float_rounding_mode(float_round_to_odd, &fpst_odd);
- 
-@@ -1036,7 +1050,8 @@ void HELPER(sme_fmopa_h)(void *vza, void *vzn, void *vzm, void *vpn,
-                         uint32_t m = *(uint32_t *)(vzm + H1_4(col));
- 
-                         m = f16mop_adj_pair(m, pcol, 0);
--                        *a = f16_dotadd(*a, n, m, &fpst_std, &fpst_odd);
-+                        *a = f16_dotadd(*a, n, m,
-+                                        &fpst_f16, &fpst_std, &fpst_odd);
-                     }
-                     col += 4;
-                     pcol >>= 4;
-diff --git a/target/arm/tcg/translate-sme.c b/target/arm/tcg/translate-sme.c
-index a50a419af2..ae42ddef7b 100644
---- a/target/arm/tcg/translate-sme.c
-+++ b/target/arm/tcg/translate-sme.c
-@@ -334,8 +334,29 @@ static bool do_outprod_fpst(DisasContext *s, arg_op *a, MemOp esz,
-     return true;
- }
- 
--TRANS_FEAT(FMOPA_h, aa64_sme, do_outprod_fpst, a,
--           MO_32, FPST_FPCR_F16, gen_helper_sme_fmopa_h)
-+static bool do_outprod_env(DisasContext *s, arg_op *a, MemOp esz,
-+                           gen_helper_gvec_5_ptr *fn)
-+{
-+    int svl = streaming_vec_reg_size(s);
-+    uint32_t desc = simd_desc(svl, svl, a->sub);
-+    TCGv_ptr za, zn, zm, pn, pm;
-+
-+    if (!sme_smza_enabled_check(s)) {
-+        return true;
-+    }
-+
-+    za = get_tile(s, esz, a->zad);
-+    zn = vec_full_reg_ptr(s, a->zn);
-+    zm = vec_full_reg_ptr(s, a->zm);
-+    pn = pred_full_reg_ptr(s, a->pn);
-+    pm = pred_full_reg_ptr(s, a->pm);
-+
-+    fn(za, zn, zm, pn, pm, tcg_env, tcg_constant_i32(desc));
-+    return true;
-+}
-+
-+TRANS_FEAT(FMOPA_h, aa64_sme, do_outprod_env, a,
-+           MO_32, gen_helper_sme_fmopa_h)
- TRANS_FEAT(FMOPA_s, aa64_sme, do_outprod_fpst, a,
-            MO_32, FPST_FPCR, gen_helper_sme_fmopa_s)
- TRANS_FEAT(FMOPA_d, aa64_sme_f64f64, do_outprod_fpst, a,

debian/patches/extra/0027-intel_iommu-fix-FRCD-construction-macro.patch

@@ -1,39 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Cl=C3=A9ment=20Mathieu--Drif?=
- <clement.mathieu--drif@eviden.com>
-Date: Tue, 9 Jul 2024 14:26:08 +0000
-Subject: [PATCH] intel_iommu: fix FRCD construction macro
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-The constant must be unsigned, otherwise the two's complement
-overrides the other fields when a PASID is present.
-
-Fixes: 1b2b12376c8a ("intel-iommu: PASID support")
-Signed-off-by: Clément Mathieu--Drif <clement.mathieu--drif@eviden.com>
-Reviewed-by: Yi Liu <yi.l.liu@intel.com>
-Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
-Reviewed-by: Minwoo Im <minwoo.im@samsung.com>
-Message-Id: <20240709142557.317271-2-clement.mathieu--drif@eviden.com>
-Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
-Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-(cherry picked from commit a3c8d7e38550c3d5a46e6fa94ffadfa625a4861d)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- hw/i386/intel_iommu_internal.h | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
-index f8cf99bddf..cbc4030031 100644
---- a/hw/i386/intel_iommu_internal.h
-+++ b/hw/i386/intel_iommu_internal.h
-@@ -267,7 +267,7 @@
- /* For the low 64-bit of 128-bit */
- #define VTD_FRCD_FI(val)        ((val) & ~0xfffULL)
- #define VTD_FRCD_PV(val)        (((val) & 0xffffULL) << 40)
--#define VTD_FRCD_PP(val)        (((val) & 0x1) << 31)
-+#define VTD_FRCD_PP(val)        (((val) & 0x1ULL) << 31)
- #define VTD_FRCD_IR_IDX(val)    (((val) & 0xffffULL) << 48)
- 
- /* DMA Remapping Fault Conditions */

debian/patches/extra/0028-target-i386-Do-not-apply-REX-to-MMX-operands.patch

@@ -1,33 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Richard Henderson <richard.henderson@linaro.org>
-Date: Mon, 12 Aug 2024 12:58:42 +1000
-Subject: [PATCH] target/i386: Do not apply REX to MMX operands
-
-Cc: qemu-stable@nongnu.org
-Fixes: b3e22b2318a ("target/i386: add core of new i386 decoder")
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2495
-Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
-Link: https://lore.kernel.org/r/20240812025844.58956-2-richard.henderson@linaro.org
-Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-(cherry picked from commit 416f2b16c02c618c0f233372ebfe343f9ee667d4)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- target/i386/tcg/decode-new.c.inc | 5 ++++-
- 1 file changed, 4 insertions(+), 1 deletion(-)
-
-diff --git a/target/i386/tcg/decode-new.c.inc b/target/i386/tcg/decode-new.c.inc
-index 4209d59ca8..09b8d2314a 100644
---- a/target/i386/tcg/decode-new.c.inc
-+++ b/target/i386/tcg/decode-new.c.inc
-@@ -1271,7 +1271,10 @@ static bool decode_op(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode,
-             op->unit = X86_OP_SSE;
-         }
-     get_reg:
--        op->n = ((get_modrm(s, env) >> 3) & 7) | REX_R(s);
-+        op->n = ((get_modrm(s, env) >> 3) & 7);
-+        if (op->unit != X86_OP_MMX) {
-+            op->n |= REX_R(s);
-+        }
-         break;
- 
-     case X86_TYPE_E:  /* ALU modrm operand */

debian/patches/extra/0029-module-Prevent-crash-by-resetting-local_err-in-modul.patch

@@ -1,42 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Alexander Ivanov <alexander.ivanov@virtuozzo.com>
-Date: Fri, 9 Aug 2024 14:13:40 +0200
-Subject: [PATCH] module: Prevent crash by resetting local_err in
- module_load_qom_all()
-
-Set local_err to NULL after it has been freed in error_report_err(). This
-avoids triggering assert(*errp == NULL) failure in error_setv() when
-local_err is reused in the loop.
-
-Signed-off-by: Alexander Ivanov <alexander.ivanov@virtuozzo.com>
-Reviewed-by: Claudio Fontana <cfontana@suse.de>
-Reviewed-by: Denis V. Lunev <den@openvz.org>
-Link: https://lore.kernel.org/r/20240809121340.992049-2-alexander.ivanov@virtuozzo.com
-[Do the same by moving the declaration instead. - Paolo]
-Cc: qemu-stable@nongnu.org
-Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-(cherry picked from commit 940d802b24e63650e0eacad3714e2ce171cba17c)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- util/module.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/util/module.c b/util/module.c
-index 32e263163c..3eb0f06df1 100644
---- a/util/module.c
-+++ b/util/module.c
-@@ -354,13 +354,13 @@ int module_load_qom(const char *type, Error **errp)
- void module_load_qom_all(void)
- {
-     const QemuModinfo *modinfo;
--    Error *local_err = NULL;
- 
-     if (module_loaded_qom_all) {
-         return;
-     }
- 
-     for (modinfo = module_info; modinfo->name != NULL; modinfo++) {
-+        Error *local_err = NULL;
-         if (!modinfo->objs) {
-             continue;
-         }

debian/patches/extra/0030-nbd-server-Plumb-in-new-args-to-nbd_client_add.patch

@@ -1,164 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Eric Blake <eblake@redhat.com>
-Date: Wed, 7 Aug 2024 08:50:01 -0500
-Subject: [PATCH] nbd/server: Plumb in new args to nbd_client_add()
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Upcoming patches to fix a CVE need to track an opaque pointer passed
-in by the owner of a client object, as well as request for a time
-limit on how fast negotiation must complete.  Prepare for that by
-changing the signature of nbd_client_new() and adding an accessor to
-get at the opaque pointer, although for now the two servers
-(qemu-nbd.c and blockdev-nbd.c) do not change behavior even though
-they pass in a new default timeout value.
-
-Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Signed-off-by: Eric Blake <eblake@redhat.com>
-Message-ID: <20240807174943.771624-11-eblake@redhat.com>
-Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
-[eblake: s/LIMIT/MAX_SECS/ as suggested by Dan]
-Signed-off-by: Eric Blake <eblake@redhat.com>
-(cherry picked from commit fb1c2aaa981e0a2fa6362c9985f1296b74f055ac)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- blockdev-nbd.c      |  6 ++++--
- include/block/nbd.h | 11 ++++++++++-
- nbd/server.c        | 20 +++++++++++++++++---
- qemu-nbd.c          |  4 +++-
- 4 files changed, 34 insertions(+), 7 deletions(-)
-
-diff --git a/blockdev-nbd.c b/blockdev-nbd.c
-index 213012435f..267a1de903 100644
---- a/blockdev-nbd.c
-+++ b/blockdev-nbd.c
-@@ -64,8 +64,10 @@ static void nbd_accept(QIONetListener *listener, QIOChannelSocket *cioc,
-     nbd_update_server_watch(nbd_server);
- 
-     qio_channel_set_name(QIO_CHANNEL(cioc), "nbd-server");
--    nbd_client_new(cioc, nbd_server->tlscreds, nbd_server->tlsauthz,
--                   nbd_blockdev_client_closed);
-+    /* TODO - expose handshake timeout as QMP option */
-+    nbd_client_new(cioc, NBD_DEFAULT_HANDSHAKE_MAX_SECS,
-+                   nbd_server->tlscreds, nbd_server->tlsauthz,
-+                   nbd_blockdev_client_closed, NULL);
- }
- 
- static void nbd_update_server_watch(NBDServerData *s)
-diff --git a/include/block/nbd.h b/include/block/nbd.h
-index 4e7bd6342f..1d4d65922d 100644
---- a/include/block/nbd.h
-+++ b/include/block/nbd.h
-@@ -33,6 +33,12 @@ typedef struct NBDMetaContexts NBDMetaContexts;
- 
- extern const BlockExportDriver blk_exp_nbd;
- 
-+/*
-+ * NBD_DEFAULT_HANDSHAKE_MAX_SECS: Number of seconds in which client must
-+ * succeed at NBD_OPT_GO before being forcefully dropped as too slow.
-+ */
-+#define NBD_DEFAULT_HANDSHAKE_MAX_SECS 10
-+
- /* Handshake phase structs - this struct is passed on the wire */
- 
- typedef struct NBDOption {
-@@ -403,9 +409,12 @@ AioContext *nbd_export_aio_context(NBDExport *exp);
- NBDExport *nbd_export_find(const char *name);
- 
- void nbd_client_new(QIOChannelSocket *sioc,
-+                    uint32_t handshake_max_secs,
-                     QCryptoTLSCreds *tlscreds,
-                     const char *tlsauthz,
--                    void (*close_fn)(NBDClient *, bool));
-+                    void (*close_fn)(NBDClient *, bool),
-+                    void *owner);
-+void *nbd_client_owner(NBDClient *client);
- void nbd_client_get(NBDClient *client);
- void nbd_client_put(NBDClient *client);
- 
-diff --git a/nbd/server.c b/nbd/server.c
-index 892797bb11..e50012499f 100644
---- a/nbd/server.c
-+++ b/nbd/server.c
-@@ -124,12 +124,14 @@ struct NBDMetaContexts {
- struct NBDClient {
-     int refcount; /* atomic */
-     void (*close_fn)(NBDClient *client, bool negotiated);
-+    void *owner;
- 
-     QemuMutex lock;
- 
-     NBDExport *exp;
-     QCryptoTLSCreds *tlscreds;
-     char *tlsauthz;
-+    uint32_t handshake_max_secs;
-     QIOChannelSocket *sioc; /* The underlying data channel */
-     QIOChannel *ioc; /* The current I/O channel which may differ (eg TLS) */
- 
-@@ -3191,6 +3193,7 @@ static coroutine_fn void nbd_co_client_start(void *opaque)
- 
-     qemu_co_mutex_init(&client->send_lock);
- 
-+    /* TODO - utilize client->handshake_max_secs */
-     if (nbd_negotiate(client, &local_err)) {
-         if (local_err) {
-             error_report_err(local_err);
-@@ -3205,14 +3208,17 @@ static coroutine_fn void nbd_co_client_start(void *opaque)
- }
- 
- /*
-- * Create a new client listener using the given channel @sioc.
-+ * Create a new client listener using the given channel @sioc and @owner.
-  * Begin servicing it in a coroutine.  When the connection closes, call
-- * @close_fn with an indication of whether the client completed negotiation.
-+ * @close_fn with an indication of whether the client completed negotiation
-+ * within @handshake_max_secs seconds (0 for unbounded).
-  */
- void nbd_client_new(QIOChannelSocket *sioc,
-+                    uint32_t handshake_max_secs,
-                     QCryptoTLSCreds *tlscreds,
-                     const char *tlsauthz,
--                    void (*close_fn)(NBDClient *, bool))
-+                    void (*close_fn)(NBDClient *, bool),
-+                    void *owner)
- {
-     NBDClient *client;
-     Coroutine *co;
-@@ -3225,13 +3231,21 @@ void nbd_client_new(QIOChannelSocket *sioc,
-         object_ref(OBJECT(client->tlscreds));
-     }
-     client->tlsauthz = g_strdup(tlsauthz);
-+    client->handshake_max_secs = handshake_max_secs;
-     client->sioc = sioc;
-     qio_channel_set_delay(QIO_CHANNEL(sioc), false);
-     object_ref(OBJECT(client->sioc));
-     client->ioc = QIO_CHANNEL(sioc);
-     object_ref(OBJECT(client->ioc));
-     client->close_fn = close_fn;
-+    client->owner = owner;
- 
-     co = qemu_coroutine_create(nbd_co_client_start, client);
-     qemu_coroutine_enter(co);
- }
-+
-+void *
-+nbd_client_owner(NBDClient *client)
-+{
-+    return client->owner;
-+}
-diff --git a/qemu-nbd.c b/qemu-nbd.c
-index d7b3ccab21..48e2fa5858 100644
---- a/qemu-nbd.c
-+++ b/qemu-nbd.c
-@@ -390,7 +390,9 @@ static void nbd_accept(QIONetListener *listener, QIOChannelSocket *cioc,
- 
-     nb_fds++;
-     nbd_update_server_watch();
--    nbd_client_new(cioc, tlscreds, tlsauthz, nbd_client_closed);
-+    /* TODO - expose handshake timeout as command line option */
-+    nbd_client_new(cioc, NBD_DEFAULT_HANDSHAKE_MAX_SECS,
-+                   tlscreds, tlsauthz, nbd_client_closed, NULL);
- }
- 
- static void nbd_update_server_watch(void)

debian/patches/extra/0031-nbd-server-CVE-2024-7409-Cap-default-max-connections.patch

@@ -1,172 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Eric Blake <eblake@redhat.com>
-Date: Tue, 6 Aug 2024 13:53:00 -0500
-Subject: [PATCH] nbd/server: CVE-2024-7409: Cap default max-connections to 100
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Allowing an unlimited number of clients to any web service is a recipe
-for a rudimentary denial of service attack: the client merely needs to
-open lots of sockets without closing them, until qemu no longer has
-any more fds available to allocate.
-
-For qemu-nbd, we default to allowing only 1 connection unless more are
-explicitly asked for (-e or --shared); this was historically picked as
-a nice default (without an explicit -t, a non-persistent qemu-nbd goes
-away after a client disconnects, without needing any additional
-follow-up commands), and we are not going to change that interface now
-(besides, someday we want to point people towards qemu-storage-daemon
-instead of qemu-nbd).
-
-But for qemu proper, and the newer qemu-storage-daemon, the QMP
-nbd-server-start command has historically had a default of unlimited
-number of connections, in part because unlike qemu-nbd it is
-inherently persistent until nbd-server-stop.  Allowing multiple client
-sockets is particularly useful for clients that can take advantage of
-MULTI_CONN (creating parallel sockets to increase throughput),
-although known clients that do so (such as libnbd's nbdcopy) typically
-use only 8 or 16 connections (the benefits of scaling diminish once
-more sockets are competing for kernel attention).  Picking a number
-large enough for typical use cases, but not unlimited, makes it
-slightly harder for a malicious client to perform a denial of service
-merely by opening lots of connections withot progressing through the
-handshake.
-
-This change does not eliminate CVE-2024-7409 on its own, but reduces
-the chance for fd exhaustion or unlimited memory usage as an attack
-surface.  On the other hand, by itself, it makes it more obvious that
-with a finite limit, we have the problem of an unauthenticated client
-holding 100 fds opened as a way to block out a legitimate client from
-being able to connect; thus, later patches will further add timeouts
-to reject clients that are not making progress.
-
-This is an INTENTIONAL change in behavior, and will break any client
-of nbd-server-start that was not passing an explicit max-connections
-parameter, yet expects more than 100 simultaneous connections.  We are
-not aware of any such client (as stated above, most clients aware of
-MULTI_CONN get by just fine on 8 or 16 connections, and probably cope
-with later connections failing by relying on the earlier connections;
-libvirt has not yet been passing max-connections, but generally
-creates NBD servers with the intent for a single client for the sake
-of live storage migration; meanwhile, the KubeSAN project anticipates
-a large cluster sharing multiple clients [up to 8 per node, and up to
-100 nodes in a cluster], but it currently uses qemu-nbd with an
-explicit --shared=0 rather than qemu-storage-daemon with
-nbd-server-start).
-
-We considered using a deprecation period (declare that omitting
-max-parameters is deprecated, and make it mandatory in 3 releases -
-then we don't need to pick an arbitrary default); that has zero risk
-of breaking any apps that accidentally depended on more than 100
-connections, and where such breakage might not be noticed under unit
-testing but only under the larger loads of production usage.  But it
-does not close the denial-of-service hole until far into the future,
-and requires all apps to change to add the parameter even if 100 was
-good enough.  It also has a drawback that any app (like libvirt) that
-is accidentally relying on an unlimited default should seriously
-consider their own CVE now, at which point they are going to change to
-pass explicit max-connections sooner than waiting for 3 qemu releases.
-Finally, if our changed default breaks an app, that app can always
-pass in an explicit max-parameters with a larger value.
-
-It is also intentional that the HMP interface to nbd-server-start is
-not changed to expose max-connections (any client needing to fine-tune
-things should be using QMP).
-
-Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
-Signed-off-by: Eric Blake <eblake@redhat.com>
-Message-ID: <20240807174943.771624-12-eblake@redhat.com>
-Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
-[ericb: Expand commit message to summarize Dan's argument for why we
-break corner-case back-compat behavior without a deprecation period]
-Signed-off-by: Eric Blake <eblake@redhat.com>
-(cherry picked from commit c8a76dbd90c2f48df89b75bef74917f90a59b623)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- block/monitor/block-hmp-cmds.c | 3 ++-
- blockdev-nbd.c                 | 8 ++++++++
- include/block/nbd.h            | 7 +++++++
- qapi/block-export.json         | 4 ++--
- 4 files changed, 19 insertions(+), 3 deletions(-)
-
-diff --git a/block/monitor/block-hmp-cmds.c b/block/monitor/block-hmp-cmds.c
-index d954bec6f1..bdf2eb50b6 100644
---- a/block/monitor/block-hmp-cmds.c
-+++ b/block/monitor/block-hmp-cmds.c
-@@ -402,7 +402,8 @@ void hmp_nbd_server_start(Monitor *mon, const QDict *qdict)
-         goto exit;
-     }
- 
--    nbd_server_start(addr, NULL, NULL, 0, &local_err);
-+    nbd_server_start(addr, NULL, NULL, NBD_DEFAULT_MAX_CONNECTIONS,
-+                     &local_err);
-     qapi_free_SocketAddress(addr);
-     if (local_err != NULL) {
-         goto exit;
-diff --git a/blockdev-nbd.c b/blockdev-nbd.c
-index 267a1de903..24ba5382db 100644
---- a/blockdev-nbd.c
-+++ b/blockdev-nbd.c
-@@ -170,6 +170,10 @@ void nbd_server_start(SocketAddress *addr, const char *tls_creds,
- 
- void nbd_server_start_options(NbdServerOptions *arg, Error **errp)
- {
-+    if (!arg->has_max_connections) {
-+        arg->max_connections = NBD_DEFAULT_MAX_CONNECTIONS;
-+    }
-+
-     nbd_server_start(arg->addr, arg->tls_creds, arg->tls_authz,
-                      arg->max_connections, errp);
- }
-@@ -182,6 +186,10 @@ void qmp_nbd_server_start(SocketAddressLegacy *addr,
- {
-     SocketAddress *addr_flat = socket_address_flatten(addr);
- 
-+    if (!has_max_connections) {
-+        max_connections = NBD_DEFAULT_MAX_CONNECTIONS;
-+    }
-+
-     nbd_server_start(addr_flat, tls_creds, tls_authz, max_connections, errp);
-     qapi_free_SocketAddress(addr_flat);
- }
-diff --git a/include/block/nbd.h b/include/block/nbd.h
-index 1d4d65922d..d4f8b21aec 100644
---- a/include/block/nbd.h
-+++ b/include/block/nbd.h
-@@ -39,6 +39,13 @@ extern const BlockExportDriver blk_exp_nbd;
-  */
- #define NBD_DEFAULT_HANDSHAKE_MAX_SECS 10
- 
-+/*
-+ * NBD_DEFAULT_MAX_CONNECTIONS: Number of client sockets to allow at
-+ * once; must be large enough to allow a MULTI_CONN-aware client like
-+ * nbdcopy to create its typical number of 8-16 sockets.
-+ */
-+#define NBD_DEFAULT_MAX_CONNECTIONS 100
-+
- /* Handshake phase structs - this struct is passed on the wire */
- 
- typedef struct NBDOption {
-diff --git a/qapi/block-export.json b/qapi/block-export.json
-index 3919a2d5b9..f45e4fd481 100644
---- a/qapi/block-export.json
-+++ b/qapi/block-export.json
-@@ -28,7 +28,7 @@
- # @max-connections: The maximum number of connections to allow at the
- #     same time, 0 for unlimited.  Setting this to 1 also stops the
- #     server from advertising multiple client support (since 5.2;
--#     default: 0)
-+#     default: 100)
- #
- # Since: 4.2
- ##
-@@ -63,7 +63,7 @@
- # @max-connections: The maximum number of connections to allow at the
- #     same time, 0 for unlimited.  Setting this to 1 also stops the
- #     server from advertising multiple client support (since 5.2;
--#     default: 0).
-+#     default: 100).
- #
- # Errors:
- #     - if the server is already running

debian/patches/extra/0032-nbd-server-CVE-2024-7409-Drop-non-negotiating-client.patch

@@ -1,123 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Eric Blake <eblake@redhat.com>
-Date: Thu, 8 Aug 2024 16:05:08 -0500
-Subject: [PATCH] nbd/server: CVE-2024-7409: Drop non-negotiating clients
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-A client that opens a socket but does not negotiate is merely hogging
-qemu's resources (an open fd and a small amount of memory); and a
-malicious client that can access the port where NBD is listening can
-attempt a denial of service attack by intentionally opening and
-abandoning lots of unfinished connections.  The previous patch put a
-default bound on the number of such ongoing connections, but once that
-limit is hit, no more clients can connect (including legitimate ones).
-The solution is to insist that clients complete handshake within a
-reasonable time limit, defaulting to 10 seconds.  A client that has
-not successfully completed NBD_OPT_GO by then (including the case of
-where the client didn't know TLS credentials to even reach the point
-of NBD_OPT_GO) is wasting our time and does not deserve to stay
-connected.  Later patches will allow fine-tuning the limit away from
-the default value (including disabling it for doing integration
-testing of the handshake process itself).
-
-Note that this patch in isolation actually makes it more likely to see
-qemu SEGV after nbd-server-stop, as any client socket still connected
-when the server shuts down will now be closed after 10 seconds rather
-than at the client's whims.  That will be addressed in the next patch.
-
-For a demo of this patch in action:
-$ qemu-nbd -f raw -r -t -e 10 file &
-$ nbdsh --opt-mode -c '
-H = list()
-for i in range(20):
-  print(i)
-  H.insert(i, nbd.NBD())
-  H[i].set_opt_mode(True)
-  H[i].connect_uri("nbd://localhost")
-'
-$ kill $!
-
-where later connections get to start progressing once earlier ones are
-forcefully dropped for taking too long, rather than hanging.
-
-Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
-Signed-off-by: Eric Blake <eblake@redhat.com>
-Message-ID: <20240807174943.771624-13-eblake@redhat.com>
-Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
-[eblake: rebase to changes earlier in series, reduce scope of timer]
-Signed-off-by: Eric Blake <eblake@redhat.com>
-(cherry picked from commit b9b72cb3ce15b693148bd09cef7e50110566d8a0)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- nbd/server.c     | 28 +++++++++++++++++++++++++++-
- nbd/trace-events |  1 +
- 2 files changed, 28 insertions(+), 1 deletion(-)
-
-diff --git a/nbd/server.c b/nbd/server.c
-index e50012499f..39285cc971 100644
---- a/nbd/server.c
-+++ b/nbd/server.c
-@@ -3186,22 +3186,48 @@ static void nbd_client_receive_next_request(NBDClient *client)
-     }
- }
- 
-+static void nbd_handshake_timer_cb(void *opaque)
-+{
-+    QIOChannel *ioc = opaque;
-+
-+    trace_nbd_handshake_timer_cb();
-+    qio_channel_shutdown(ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL);
-+}
-+
- static coroutine_fn void nbd_co_client_start(void *opaque)
- {
-     NBDClient *client = opaque;
-     Error *local_err = NULL;
-+    QEMUTimer *handshake_timer = NULL;
- 
-     qemu_co_mutex_init(&client->send_lock);
- 
--    /* TODO - utilize client->handshake_max_secs */
-+    /*
-+     * Create a timer to bound the time spent in negotiation. If the
-+     * timer expires, it is likely nbd_negotiate will fail because the
-+     * socket was shutdown.
-+     */
-+    if (client->handshake_max_secs > 0) {
-+        handshake_timer = aio_timer_new(qemu_get_aio_context(),
-+                                        QEMU_CLOCK_REALTIME,
-+                                        SCALE_NS,
-+                                        nbd_handshake_timer_cb,
-+                                        client->sioc);
-+        timer_mod(handshake_timer,
-+                  qemu_clock_get_ns(QEMU_CLOCK_REALTIME) +
-+                  client->handshake_max_secs * NANOSECONDS_PER_SECOND);
-+    }
-+
-     if (nbd_negotiate(client, &local_err)) {
-         if (local_err) {
-             error_report_err(local_err);
-         }
-+        timer_free(handshake_timer);
-         client_close(client, false);
-         return;
-     }
- 
-+    timer_free(handshake_timer);
-     WITH_QEMU_LOCK_GUARD(&client->lock) {
-         nbd_client_receive_next_request(client);
-     }
-diff --git a/nbd/trace-events b/nbd/trace-events
-index 00ae3216a1..cbd0a4ab7e 100644
---- a/nbd/trace-events
-+++ b/nbd/trace-events
-@@ -76,6 +76,7 @@ nbd_co_receive_request_payload_received(uint64_t cookie, uint64_t len) "Payload
- nbd_co_receive_ext_payload_compliance(uint64_t from, uint64_t len) "client sent non-compliant write without payload flag: from=0x%" PRIx64 ", len=0x%" PRIx64
- nbd_co_receive_align_compliance(const char *op, uint64_t from, uint64_t len, uint32_t align) "client sent non-compliant unaligned %s request: from=0x%" PRIx64 ", len=0x%" PRIx64 ", align=0x%" PRIx32
- nbd_trip(void) "Reading request"
-+nbd_handshake_timer_cb(void) "client took too long to negotiate"
- 
- # client-connection.c
- nbd_connect_thread_sleep(uint64_t timeout) "timeout %" PRIu64

debian/patches/extra/0033-nbd-server-CVE-2024-7409-Close-stray-clients-at-serv.patch

@@ -1,161 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Eric Blake <eblake@redhat.com>
-Date: Wed, 7 Aug 2024 12:23:13 -0500
-Subject: [PATCH] nbd/server: CVE-2024-7409: Close stray clients at server-stop
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-A malicious client can attempt to connect to an NBD server, and then
-intentionally delay progress in the handshake, including if it does
-not know the TLS secrets.  Although the previous two patches reduce
-this behavior by capping the default max-connections parameter and
-killing slow clients, they did not eliminate the possibility of a
-client waiting to close the socket until after the QMP nbd-server-stop
-command is executed, at which point qemu would SEGV when trying to
-dereference the NULL nbd_server global which is no longer present.
-This amounts to a denial of service attack.  Worse, if another NBD
-server is started before the malicious client disconnects, I cannot
-rule out additional adverse effects when the old client interferes
-with the connection count of the new server (although the most likely
-is a crash due to an assertion failure when checking
-nbd_server->connections > 0).
-
-For environments without this patch, the CVE can be mitigated by
-ensuring (such as via a firewall) that only trusted clients can
-connect to an NBD server.  Note that using frameworks like libvirt
-that ensure that TLS is used and that nbd-server-stop is not executed
-while any trusted clients are still connected will only help if there
-is also no possibility for an untrusted client to open a connection
-but then stall on the NBD handshake.
-
-Given the previous patches, it would be possible to guarantee that no
-clients remain connected by having nbd-server-stop sleep for longer
-than the default handshake deadline before finally freeing the global
-nbd_server object, but that could make QMP non-responsive for a long
-time.  So intead, this patch fixes the problem by tracking all client
-sockets opened while the server is running, and forcefully closing any
-such sockets remaining without a completed handshake at the time of
-nbd-server-stop, then waiting until the coroutines servicing those
-sockets notice the state change.  nbd-server-stop now has a second
-AIO_WAIT_WHILE_UNLOCKED (the first is indirectly through the
-blk_exp_close_all_type() that disconnects all clients that completed
-handshakes), but forced socket shutdown is enough to progress the
-coroutines and quickly tear down all clients before the server is
-freed, thus finally fixing the CVE.
-
-This patch relies heavily on the fact that nbd/server.c guarantees
-that it only calls nbd_blockdev_client_closed() from the main loop
-(see the assertion in nbd_client_put() and the hoops used in
-nbd_client_put_nonzero() to achieve that); if we did not have that
-guarantee, we would also need a mutex protecting our accesses of the
-list of connections to survive re-entrancy from independent iothreads.
-
-Although I did not actually try to test old builds, it looks like this
-problem has existed since at least commit 862172f45c (v2.12.0, 2017) -
-even back when that patch started using a QIONetListener to handle
-listening on multiple sockets, nbd_server_free() was already unaware
-that the nbd_blockdev_client_closed callback can be reached later by a
-client thread that has not completed handshakes (and therefore the
-client's socket never got added to the list closed in
-nbd_export_close_all), despite that patch intentionally tearing down
-the QIONetListener to prevent new clients.
-
-Reported-by: Alexander Ivanov <alexander.ivanov@virtuozzo.com>
-Fixes: CVE-2024-7409
-CC: qemu-stable@nongnu.org
-Signed-off-by: Eric Blake <eblake@redhat.com>
-Message-ID: <20240807174943.771624-14-eblake@redhat.com>
-Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
-(cherry picked from commit 3e7ef738c8462c45043a1d39f702a0990406a3b3)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- blockdev-nbd.c | 35 ++++++++++++++++++++++++++++++++++-
- 1 file changed, 34 insertions(+), 1 deletion(-)
-
-diff --git a/blockdev-nbd.c b/blockdev-nbd.c
-index 24ba5382db..f73409ae49 100644
---- a/blockdev-nbd.c
-+++ b/blockdev-nbd.c
-@@ -21,12 +21,18 @@
- #include "io/channel-socket.h"
- #include "io/net-listener.h"
- 
-+typedef struct NBDConn {
-+    QIOChannelSocket *cioc;
-+    QLIST_ENTRY(NBDConn) next;
-+} NBDConn;
-+
- typedef struct NBDServerData {
-     QIONetListener *listener;
-     QCryptoTLSCreds *tlscreds;
-     char *tlsauthz;
-     uint32_t max_connections;
-     uint32_t connections;
-+    QLIST_HEAD(, NBDConn) conns;
- } NBDServerData;
- 
- static NBDServerData *nbd_server;
-@@ -51,6 +57,14 @@ int nbd_server_max_connections(void)
- 
- static void nbd_blockdev_client_closed(NBDClient *client, bool ignored)
- {
-+    NBDConn *conn = nbd_client_owner(client);
-+
-+    assert(qemu_in_main_thread() && nbd_server);
-+
-+    object_unref(OBJECT(conn->cioc));
-+    QLIST_REMOVE(conn, next);
-+    g_free(conn);
-+
-     nbd_client_put(client);
-     assert(nbd_server->connections > 0);
-     nbd_server->connections--;
-@@ -60,14 +74,20 @@ static void nbd_blockdev_client_closed(NBDClient *client, bool ignored)
- static void nbd_accept(QIONetListener *listener, QIOChannelSocket *cioc,
-                        gpointer opaque)
- {
-+    NBDConn *conn = g_new0(NBDConn, 1);
-+
-+    assert(qemu_in_main_thread() && nbd_server);
-     nbd_server->connections++;
-+    object_ref(OBJECT(cioc));
-+    conn->cioc = cioc;
-+    QLIST_INSERT_HEAD(&nbd_server->conns, conn, next);
-     nbd_update_server_watch(nbd_server);
- 
-     qio_channel_set_name(QIO_CHANNEL(cioc), "nbd-server");
-     /* TODO - expose handshake timeout as QMP option */
-     nbd_client_new(cioc, NBD_DEFAULT_HANDSHAKE_MAX_SECS,
-                    nbd_server->tlscreds, nbd_server->tlsauthz,
--                   nbd_blockdev_client_closed, NULL);
-+                   nbd_blockdev_client_closed, conn);
- }
- 
- static void nbd_update_server_watch(NBDServerData *s)
-@@ -81,12 +101,25 @@ static void nbd_update_server_watch(NBDServerData *s)
- 
- static void nbd_server_free(NBDServerData *server)
- {
-+    NBDConn *conn, *tmp;
-+
-     if (!server) {
-         return;
-     }
- 
-+    /*
-+     * Forcefully close the listener socket, and any clients that have
-+     * not yet disconnected on their own.
-+     */
-     qio_net_listener_disconnect(server->listener);
-     object_unref(OBJECT(server->listener));
-+    QLIST_FOREACH_SAFE(conn, &server->conns, next, tmp) {
-+        qio_channel_shutdown(QIO_CHANNEL(conn->cioc), QIO_CHANNEL_SHUTDOWN_BOTH,
-+                             NULL);
-+    }
-+
-+    AIO_WAIT_WHILE_UNLOCKED(NULL, server->connections > 0);
-+
-     if (server->tlscreds) {
-         object_unref(OBJECT(server->tlscreds));
-     }

debian/patches/extra/0034-vnc-fix-crash-when-no-console-attached.patch

@@ -1,47 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
-Date: Tue, 20 Aug 2024 17:11:12 +0400
-Subject: [PATCH] vnc: fix crash when no console attached
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Since commit e99441a3793b5 ("ui/curses: Do not use console_select()")
-qemu_text_console_put_keysym() no longer checks for NULL console
-argument, which leads to a later crash:
-
-Thread 1 "qemu-system-x86" received signal SIGSEGV, Segmentation fault.
-0x00005555559ee186 in qemu_text_console_handle_keysym (s=0x0, keysym=31) at ../ui/console-vc.c:332
-332	        } else if (s->echo && (keysym == '\r' || keysym == '\n')) {
-(gdb) bt
- #0  0x00005555559ee186 in qemu_text_console_handle_keysym (s=0x0, keysym=31) at ../ui/console-vc.c:332
- #1  0x00005555559e18e5 in qemu_text_console_put_keysym (s=<optimized out>, keysym=<optimized out>) at ../ui/console.c:303
- #2  0x00005555559f2e88 in do_key_event (vs=vs@entry=0x5555579045c0, down=down@entry=1, keycode=keycode@entry=60, sym=sym@entry=65471) at ../ui/vnc.c:2034
- #3  0x00005555559f845c in ext_key_event (vs=0x5555579045c0, down=1, sym=65471, keycode=<optimized out>) at ../ui/vnc.c:2070
- #4  protocol_client_msg (vs=0x5555579045c0, data=<optimized out>, len=<optimized out>) at ../ui/vnc.c:2514
- #5  0x00005555559f515c in vnc_client_read (vs=0x5555579045c0) at ../ui/vnc.c:1607
-
-Fixes: e99441a3793b5 ("ui/curses: Do not use console_select()")
-Fixes: https://issues.redhat.com/browse/RHEL-50529
-Cc: qemu-stable@nongnu.org
-Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
-Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
-(picked from https://lore.kernel.org/qemu-devel/20240820131112.1267954-1-marcandre.lureau@redhat.com/)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- ui/vnc.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/ui/vnc.c b/ui/vnc.c
-index b3fd78022b..953ea38318 100644
---- a/ui/vnc.c
-+++ b/ui/vnc.c
-@@ -1935,7 +1935,7 @@ static void do_key_event(VncState *vs, int down, int keycode, int sym)
-     }
- 
-     qkbd_state_key_event(vs->vd->kbd, qcode, down);
--    if (!qemu_console_is_graphic(vs->vd->dcl.con)) {
-+    if (QEMU_IS_TEXT_CONSOLE(vs->vd->dcl.con)) {
-         QemuTextConsole *con = QEMU_TEXT_CONSOLE(vs->vd->dcl.con);
-         bool numlock = qkbd_state_modifier_get(vs->vd->kbd, QKBD_MOD_NUMLOCK);
-         bool control = qkbd_state_modifier_get(vs->vd->kbd, QKBD_MOD_CTRL);

debian/patches/extra/0035-nbd-server-CVE-2024-7409-Avoid-use-after-free-when-c.patch

@@ -1,89 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Eric Blake <eblake@redhat.com>
-Date: Thu, 22 Aug 2024 09:35:29 -0500
-Subject: [PATCH] nbd/server: CVE-2024-7409: Avoid use-after-free when closing
- server
-
-Commit 3e7ef738 plugged the use-after-free of the global nbd_server
-object, but overlooked a use-after-free of nbd_server->listener.
-Although this race is harder to hit, notice that our shutdown path
-first drops the reference count of nbd_server->listener, then triggers
-actions that can result in a pending client reaching the
-nbd_blockdev_client_closed() callback, which in turn calls
-qio_net_listener_set_client_func on a potentially stale object.
-
-If we know we don't want any more clients to connect, and have already
-told the listener socket to shut down, then we should not be trying to
-update the listener socket's associated function.
-
-Reproducer:
-
-> #!/usr/bin/python3
->
-> import os
-> from threading import Thread
->
-> def start_stop():
->     while 1:
->         os.system('virsh qemu-monitor-command VM \'{"execute": "nbd-server-start",
-+"arguments":{"addr":{"type":"unix","data":{"path":"/tmp/nbd-sock"}}}}\'')
->         os.system('virsh qemu-monitor-command VM \'{"execute": "nbd-server-stop"}\'')
->
-> def nbd_list():
->     while 1:
->         os.system('/path/to/build/qemu-nbd -L -k /tmp/nbd-sock')
->
-> def test():
->     sst = Thread(target=start_stop)
->     sst.start()
->     nlt = Thread(target=nbd_list)
->     nlt.start()
->
->     sst.join()
->     nlt.join()
->
-> test()
-
-Fixes: CVE-2024-7409
-Fixes: 3e7ef738c8 ("nbd/server: CVE-2024-7409: Close stray clients at server-stop")
-CC: qemu-stable@nongnu.org
-Reported-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>
-Signed-off-by: Eric Blake <eblake@redhat.com>
-Message-ID: <20240822143617.800419-2-eblake@redhat.com>
-Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
-(cherry picked from commit 3874f5f73c441c52f1c699c848d463b0eda01e4c)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- blockdev-nbd.c | 12 ++++++++----
- 1 file changed, 8 insertions(+), 4 deletions(-)
-
-diff --git a/blockdev-nbd.c b/blockdev-nbd.c
-index f73409ae49..b36f41b7c5 100644
---- a/blockdev-nbd.c
-+++ b/blockdev-nbd.c
-@@ -92,10 +92,13 @@ static void nbd_accept(QIONetListener *listener, QIOChannelSocket *cioc,
- 
- static void nbd_update_server_watch(NBDServerData *s)
- {
--    if (!s->max_connections || s->connections < s->max_connections) {
--        qio_net_listener_set_client_func(s->listener, nbd_accept, NULL, NULL);
--    } else {
--        qio_net_listener_set_client_func(s->listener, NULL, NULL, NULL);
-+    if (s->listener) {
-+        if (!s->max_connections || s->connections < s->max_connections) {
-+            qio_net_listener_set_client_func(s->listener, nbd_accept, NULL,
-+                                             NULL);
-+        } else {
-+            qio_net_listener_set_client_func(s->listener, NULL, NULL, NULL);
-+        }
-     }
- }
- 
-@@ -113,6 +116,7 @@ static void nbd_server_free(NBDServerData *server)
-      */
-     qio_net_listener_disconnect(server->listener);
-     object_unref(OBJECT(server->listener));
-+    server->listener = NULL;
-     QLIST_FOREACH_SAFE(conn, &server->conns, next, tmp) {
-         qio_channel_shutdown(QIO_CHANNEL(conn->cioc), QIO_CHANNEL_SHUTDOWN_BOTH,
-                              NULL);

debian/patches/extra/0036-softmmu-physmem-fix-memory-leak-in-dirty_memory_exte.patch

@@ -1,134 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: David Hildenbrand <david@redhat.com>
-Date: Wed, 28 Aug 2024 11:07:43 +0200
-Subject: [PATCH] softmmu/physmem: fix memory leak in dirty_memory_extend()
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-As reported by Peter, we might be leaking memory when removing the
-highest RAMBlock (in the weird ram_addr_t space), and adding a new one.
-
-We will fail to realize that we already allocated bitmaps for more
-dirty memory blocks, and effectively discard the pointers to them.
-
-Fix it by getting rid of last_ram_page() and by remembering the number
-of dirty memory blocks that have been allocated already.
-
-While at it, let's use "unsigned int" for the number of blocks, which
-should be sufficient until we reach ~32 exabytes.
-
-Looks like this leak was introduced as we switched from using a single
-bitmap_zero_extend() to allocating multiple bitmaps:
-bitmap_zero_extend() relies on g_renew() which should have taken care of
-this.
-
-Resolves: https://lkml.kernel.org/r/CAFEAcA-k7a+VObGAfCFNygQNfCKL=AfX6A4kScq=VSSK0peqPg@mail.gmail.com
-Reported-by: Peter Maydell <peter.maydell@linaro.org>
-Fixes: 5b82b703b69a ("memory: RCU ram_list.dirty_memory[] for safe RAM hotplug")
-Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
-Reviewed-by: Peter Xu <peterx@redhat.com>
-Tested-by: Peter Maydell <peter.maydell@linaro.org>
-Cc: qemu-stable@nongnu.org
-Cc: Stefan Hajnoczi <stefanha@redhat.com>
-Cc: Paolo Bonzini <pbonzini@redhat.com>
-Cc: Peter Xu <peterx@redhat.com>
-Cc: "Philippe Mathieu-Daudé" <philmd@linaro.org>
-Signed-off-by: David Hildenbrand <david@redhat.com>
-(picked from https://lore.kernel.org/qemu-devel/20240828090743.128647-1-david@redhat.com/)
-[FE: backport - remove not-yet-existing variable in context of hunk touching ram_block_add()]
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- include/exec/ramlist.h |  1 +
- system/physmem.c       | 35 +++++++++--------------------------
- 2 files changed, 10 insertions(+), 26 deletions(-)
-
-diff --git a/include/exec/ramlist.h b/include/exec/ramlist.h
-index 2ad2a81acc..d9cfe530be 100644
---- a/include/exec/ramlist.h
-+++ b/include/exec/ramlist.h
-@@ -50,6 +50,7 @@ typedef struct RAMList {
-     /* RCU-enabled, writes protected by the ramlist lock. */
-     QLIST_HEAD(, RAMBlock) blocks;
-     DirtyMemoryBlocks *dirty_memory[DIRTY_MEMORY_NUM];
-+    unsigned int num_dirty_blocks;
-     uint32_t version;
-     QLIST_HEAD(, RAMBlockNotifier) ramblock_notifiers;
- } RAMList;
-diff --git a/system/physmem.c b/system/physmem.c
-index a4fe3d2bf8..78f7db1121 100644
---- a/system/physmem.c
-+++ b/system/physmem.c
-@@ -1497,18 +1497,6 @@ static ram_addr_t find_ram_offset(ram_addr_t size)
-     return offset;
- }
- 
--static unsigned long last_ram_page(void)
--{
--    RAMBlock *block;
--    ram_addr_t last = 0;
--
--    RCU_READ_LOCK_GUARD();
--    RAMBLOCK_FOREACH(block) {
--        last = MAX(last, block->offset + block->max_length);
--    }
--    return last >> TARGET_PAGE_BITS;
--}
--
- static void qemu_ram_setup_dump(void *addr, ram_addr_t size)
- {
-     int ret;
-@@ -1762,13 +1750,11 @@ void qemu_ram_msync(RAMBlock *block, ram_addr_t start, ram_addr_t length)
- }
- 
- /* Called with ram_list.mutex held */
--static void dirty_memory_extend(ram_addr_t old_ram_size,
--                                ram_addr_t new_ram_size)
-+static void dirty_memory_extend(ram_addr_t new_ram_size)
- {
--    ram_addr_t old_num_blocks = DIV_ROUND_UP(old_ram_size,
--                                             DIRTY_MEMORY_BLOCK_SIZE);
--    ram_addr_t new_num_blocks = DIV_ROUND_UP(new_ram_size,
--                                             DIRTY_MEMORY_BLOCK_SIZE);
-+    unsigned int old_num_blocks = ram_list.num_dirty_blocks;
-+    unsigned int new_num_blocks = DIV_ROUND_UP(new_ram_size,
-+                                               DIRTY_MEMORY_BLOCK_SIZE);
-     int i;
- 
-     /* Only need to extend if block count increased */
-@@ -1800,6 +1786,8 @@ static void dirty_memory_extend(ram_addr_t old_ram_size,
-             g_free_rcu(old_blocks, rcu);
-         }
-     }
-+
-+    ram_list.num_dirty_blocks = new_num_blocks;
- }
- 
- static void ram_block_add(RAMBlock *new_block, Error **errp)
-@@ -1808,11 +1796,9 @@ static void ram_block_add(RAMBlock *new_block, Error **errp)
-     const bool shared = qemu_ram_is_shared(new_block);
-     RAMBlock *block;
-     RAMBlock *last_block = NULL;
--    ram_addr_t old_ram_size, new_ram_size;
-+    ram_addr_t ram_size;
-     Error *err = NULL;
- 
--    old_ram_size = last_ram_page();
--
-     qemu_mutex_lock_ramlist();
-     new_block->offset = find_ram_offset(new_block->max_length);
- 
-@@ -1840,11 +1826,8 @@ static void ram_block_add(RAMBlock *new_block, Error **errp)
-         }
-     }
- 
--    new_ram_size = MAX(old_ram_size,
--              (new_block->offset + new_block->max_length) >> TARGET_PAGE_BITS);
--    if (new_ram_size > old_ram_size) {
--        dirty_memory_extend(old_ram_size, new_ram_size);
--    }
-+    ram_size = (new_block->offset + new_block->max_length) >> TARGET_PAGE_BITS;
-+    dirty_memory_extend(ram_size);
-     /* Keep the list sorted from biggest to smallest block.  Unlike QTAILQ,
-      * QLIST (which has an RCU-friendly variant) does not have insertion at
-      * tail, so save the last element in last_block.

debian/patches/extra/0037-block-reqlist-allow-adding-overlapping-requests.patch

@@ -1,104 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Fiona Ebner <f.ebner@proxmox.com>
-Date: Thu, 7 Nov 2024 17:51:13 +0100
-Subject: [PATCH] block/reqlist: allow adding overlapping requests
-
-Allow overlapping request by removing the assert that made it
-impossible. There are only two callers:
-
-1. block_copy_task_create()
-
-It already asserts the very same condition before calling
-reqlist_init_req().
-
-2. cbw_snapshot_read_lock()
-
-There is no need to have read requests be non-overlapping in
-copy-before-write when used for snapshot-access. In fact, there was no
-protection against two callers of cbw_snapshot_read_lock() calling
-reqlist_init_req() with overlapping ranges and this could lead to an
-assertion failure [1].
-
-In particular, with the reproducer script below [0], two
-cbw_co_snapshot_block_status() callers could race, with the second
-calling reqlist_init_req() before the first one finishes and removes
-its conflicting request.
-
-[0]:
-
-> #!/bin/bash -e
-> dd if=/dev/urandom of=/tmp/disk.raw bs=1M count=1024
-> ./qemu-img create /tmp/fleecing.raw -f raw 1G
-> (
-> ./qemu-system-x86_64 --qmp stdio \
-> --blockdev raw,node-name=node0,file.driver=file,file.filename=/tmp/disk.raw \
-> --blockdev raw,node-name=node1,file.driver=file,file.filename=/tmp/fleecing.raw \
-> <<EOF
-> {"execute": "qmp_capabilities"}
-> {"execute": "blockdev-add", "arguments": { "driver": "copy-before-write", "file": "node0", "target": "node1", "node-name": "node3" } }
-> {"execute": "blockdev-add", "arguments": { "driver": "snapshot-access", "file": "node3", "node-name": "snap0" } }
-> {"execute": "nbd-server-start", "arguments": {"addr": { "type": "unix", "data": { "path": "/tmp/nbd.socket" } } } }
-> {"execute": "block-export-add", "arguments": {"id": "exp0", "node-name": "snap0", "type": "nbd", "name": "exp0"}}
-> EOF
-> ) &
-> sleep 5
-> while true; do
-> ./qemu-nbd -d /dev/nbd0
-> ./qemu-nbd -c /dev/nbd0 nbd:unix:/tmp/nbd.socket:exportname=exp0 -f raw -r
-> nbdinfo --map 'nbd+unix:///exp0?socket=/tmp/nbd.socket'
-> done
-
-[1]:
-
-> #5  0x000071e5f0088eb2 in __GI___assert_fail (...) at ./assert/assert.c:101
-> #6  0x0000615285438017 in reqlist_init_req (...) at ../block/reqlist.c:23
-> #7  0x00006152853e2d98 in cbw_snapshot_read_lock (...) at ../block/copy-before-write.c:237
-> #8  0x00006152853e3068 in cbw_co_snapshot_block_status (...) at ../block/copy-before-write.c:304
-> #9  0x00006152853f4d22 in bdrv_co_snapshot_block_status (...) at ../block/io.c:3726
-> #10 0x000061528543a63e in snapshot_access_co_block_status (...) at ../block/snapshot-access.c:48
-> #11 0x00006152853f1a0a in bdrv_co_do_block_status (...) at ../block/io.c:2474
-> #12 0x00006152853f2016 in bdrv_co_common_block_status_above (...) at ../block/io.c:2652
-> #13 0x00006152853f22cf in bdrv_co_block_status_above (...) at ../block/io.c:2732
-> #14 0x00006152853d9a86 in blk_co_block_status_above (...) at ../block/block-backend.c:1473
-> #15 0x000061528538da6c in blockstatus_to_extents (...) at ../nbd/server.c:2374
-> #16 0x000061528538deb1 in nbd_co_send_block_status (...) at ../nbd/server.c:2481
-> #17 0x000061528538f424 in nbd_handle_request (...) at ../nbd/server.c:2978
-> #18 0x000061528538f906 in nbd_trip (...) at ../nbd/server.c:3121
-> #19 0x00006152855a7caf in coroutine_trampoline (...) at ../util/coroutine-ucontext.c:175
-
-Cc: qemu-stable@nongnu.org
-Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
----
- block/copy-before-write.c | 3 ++-
- block/reqlist.c           | 2 --
- 2 files changed, 2 insertions(+), 3 deletions(-)
-
-diff --git a/block/copy-before-write.c b/block/copy-before-write.c
-index 8aba27a71d..3698b3bc60 100644
---- a/block/copy-before-write.c
-+++ b/block/copy-before-write.c
-@@ -65,7 +65,8 @@ typedef struct BDRVCopyBeforeWriteState {
- 
-     /*
-      * @frozen_read_reqs: current read requests for fleecing user in bs->file
--     * node. These areas must not be rewritten by guest.
-+     * node. These areas must not be rewritten by guest. There can be multiple
-+     * overlapping read requests.
-      */
-     BlockReqList frozen_read_reqs;
- 
-diff --git a/block/reqlist.c b/block/reqlist.c
-index 08cb57cfa4..098e807378 100644
---- a/block/reqlist.c
-+++ b/block/reqlist.c
-@@ -20,8 +20,6 @@
- void reqlist_init_req(BlockReqList *reqs, BlockReq *req, int64_t offset,
-                       int64_t bytes)
- {
--    assert(!reqlist_find_conflict(reqs, offset, bytes));
--
-     *req = (BlockReq) {
-         .offset = offset,
-         .bytes = bytes,

debian/patches/pve/0001-PVE-Config-block-file-change-locking-default-to-off.patch

@@ -14,7 +14,7 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 2 insertions(+), 2 deletions(-)
 
 diff --git a/block/file-posix.c b/block/file-posix.c
-index 35684f7e21..43bc0bd520 100644
+index 7f540b03ed..ca551baa42 100644
 --- a/block/file-posix.c
 +++ b/block/file-posix.c
 @@ -563,7 +563,7 @@ static QemuOptsList raw_runtime_opts = {

debian/patches/pve/0002-PVE-Config-Adjust-network-script-path-to-etc-kvm.patch

@@ -9,10 +9,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 2 insertions(+), 2 deletions(-)
 
 diff --git a/include/net/net.h b/include/net/net.h
-index b1f9b35fcc..096c0d52e4 100644
+index 685ec58318..22edf4ee96 100644
 --- a/include/net/net.h
 +++ b/include/net/net.h
-@@ -317,8 +317,8 @@ void netdev_add(QemuOpts *opts, Error **errp);
+@@ -260,8 +260,8 @@ void netdev_add(QemuOpts *opts, Error **errp);
  int net_hub_id_for_client(NetClientState *nc, int *id);
  NetClientState *net_hub_port_find(int hub_id);
  

debian/patches/pve/0003-PVE-Config-set-the-CPU-model-to-kvm64-32-instead-of-.patch

@@ -10,10 +10,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 2 insertions(+), 2 deletions(-)
 
 diff --git a/target/i386/cpu.h b/target/i386/cpu.h
-index 6b05738079..d82869900a 100644
+index 0893b794e9..6d650a58b9 100644
 --- a/target/i386/cpu.h
 +++ b/target/i386/cpu.h
-@@ -2291,9 +2291,9 @@ uint64_t cpu_get_tsc(CPUX86State *env);
+@@ -2243,9 +2243,9 @@ uint64_t cpu_get_tsc(CPUX86State *env);
  #define CPU_RESOLVING_TYPE TYPE_X86_CPU
  
  #ifdef TARGET_X86_64

debian/patches/pve/0004-PVE-Config-ui-spice-default-to-pve-certificates.patch

@@ -9,10 +9,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 9 insertions(+), 6 deletions(-)
 
 diff --git a/ui/spice-core.c b/ui/spice-core.c
-index 15be640286..ea20e6153c 100644
+index 52a59386d7..b20c25aee0 100644
 --- a/ui/spice-core.c
 +++ b/ui/spice-core.c
-@@ -690,32 +690,35 @@ static void qemu_spice_init(void)
+@@ -691,32 +691,35 @@ static void qemu_spice_init(void)
  
      if (tls_port) {
          x509_dir = qemu_opt_get(opts, "x509-dir");

debian/patches/pve/0005-PVE-Config-glusterfs-no-default-logfile-if-daemonize.patch

@@ -9,7 +9,7 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 11 insertions(+), 4 deletions(-)
 
 diff --git a/block/gluster.c b/block/gluster.c
-index cc74af06dc..3ba9bbfa5e 100644
+index ad5fadbe79..d0011085c4 100644
 --- a/block/gluster.c
 +++ b/block/gluster.c
 @@ -43,7 +43,7 @@

debian/patches/pve/0006-PVE-Config-rbd-block-rbd-disable-rbd_cache_writethro.patch

@@ -18,7 +18,7 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 2 insertions(+)
 
 diff --git a/block/rbd.c b/block/rbd.c
-index 84bb2fa5d7..63f60d41be 100644
+index 978671411e..a4749f3b1b 100644
 --- a/block/rbd.c
 +++ b/block/rbd.c
 @@ -963,6 +963,8 @@ static int qemu_rbd_connect(rados_t *cluster, rados_ioctx_t *io_ctx,

debian/patches/pve/0007-PVE-Up-glusterfs-allow-partial-reads.patch

@@ -16,7 +16,7 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 9 insertions(+), 1 deletion(-)
 
 diff --git a/block/gluster.c b/block/gluster.c
-index 3ba9bbfa5e..34936eb855 100644
+index d0011085c4..2df3d6e35d 100644
 --- a/block/gluster.c
 +++ b/block/gluster.c
 @@ -58,6 +58,7 @@ typedef struct GlusterAIOCB {
@@ -39,7 +39,7 @@ index 3ba9bbfa5e..34936eb855 100644
      }
  
      aio_co_schedule(acb->aio_context, acb->coroutine);
-@@ -1023,6 +1026,7 @@ static coroutine_fn int qemu_gluster_co_pwrite_zeroes(BlockDriverState *bs,
+@@ -1021,6 +1024,7 @@ static coroutine_fn int qemu_gluster_co_pwrite_zeroes(BlockDriverState *bs,
      acb.ret = 0;
      acb.coroutine = qemu_coroutine_self();
      acb.aio_context = bdrv_get_aio_context(bs);
@@ -47,7 +47,7 @@ index 3ba9bbfa5e..34936eb855 100644
  
      ret = glfs_zerofill_async(s->fd, offset, bytes, gluster_finish_aiocb, &acb);
      if (ret < 0) {
-@@ -1203,9 +1207,11 @@ static coroutine_fn int qemu_gluster_co_rw(BlockDriverState *bs,
+@@ -1201,9 +1205,11 @@ static coroutine_fn int qemu_gluster_co_rw(BlockDriverState *bs,
      acb.aio_context = bdrv_get_aio_context(bs);
  
      if (write) {
@@ -59,7 +59,7 @@ index 3ba9bbfa5e..34936eb855 100644
          ret = glfs_preadv_async(s->fd, qiov->iov, qiov->niov, offset, 0,
                                  gluster_finish_aiocb, &acb);
      }
-@@ -1268,6 +1274,7 @@ static coroutine_fn int qemu_gluster_co_flush_to_disk(BlockDriverState *bs)
+@@ -1266,6 +1272,7 @@ static coroutine_fn int qemu_gluster_co_flush_to_disk(BlockDriverState *bs)
      acb.ret = 0;
      acb.coroutine = qemu_coroutine_self();
      acb.aio_context = bdrv_get_aio_context(bs);
@@ -67,7 +67,7 @@ index 3ba9bbfa5e..34936eb855 100644
  
      ret = glfs_fsync_async(s->fd, gluster_finish_aiocb, &acb);
      if (ret < 0) {
-@@ -1316,6 +1323,7 @@ static coroutine_fn int qemu_gluster_co_pdiscard(BlockDriverState *bs,
+@@ -1314,6 +1321,7 @@ static coroutine_fn int qemu_gluster_co_pdiscard(BlockDriverState *bs,
      acb.ret = 0;
      acb.coroutine = qemu_coroutine_self();
      acb.aio_context = bdrv_get_aio_context(bs);

debian/patches/pve/0008-PVE-Up-qemu-img-return-success-on-info-without-snaps.patch

@@ -9,10 +9,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 2 insertions(+), 1 deletion(-)
 
 diff --git a/qemu-img.c b/qemu-img.c
-index 7668f86769..2575e97b43 100644
+index 78433f3746..25d427edd1 100644
 --- a/qemu-img.c
 +++ b/qemu-img.c
-@@ -3075,7 +3075,8 @@ static int img_info(int argc, char **argv)
+@@ -3062,7 +3062,8 @@ static int img_info(int argc, char **argv)
      list = collect_image_info_list(image_opts, filename, fmt, chain,
                                     force_share);
      if (!list) {

debian/patches/pve/0009-PVE-Up-qemu-img-dd-add-osize-and-read-from-to-stdin-.patch

@@ -38,10 +38,10 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  2 files changed, 133 insertions(+), 73 deletions(-)
 
 diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx
-index c9dd70a892..048788b23d 100644
+index 1b1dab5b17..d1616c045a 100644
 --- a/qemu-img-cmds.hx
 +++ b/qemu-img-cmds.hx
-@@ -60,9 +60,9 @@ SRST
+@@ -58,9 +58,9 @@ SRST
  ERST
  
  DEF("dd", img_dd,
@@ -54,10 +54,10 @@ index c9dd70a892..048788b23d 100644
  
  DEF("info", img_info,
 diff --git a/qemu-img.c b/qemu-img.c
-index 2575e97b43..8ec68b346f 100644
+index 25d427edd1..220e6ec577 100644
 --- a/qemu-img.c
 +++ b/qemu-img.c
-@@ -4993,10 +4993,12 @@ static int img_bitmap(int argc, char **argv)
+@@ -4899,10 +4899,12 @@ static int img_bitmap(int argc, char **argv)
  #define C_IF      04
  #define C_OF      010
  #define C_SKIP    020
@@ -70,7 +70,7 @@ index 2575e97b43..8ec68b346f 100644
  };
  
  struct DdIo {
-@@ -5072,6 +5074,19 @@ static int img_dd_skip(const char *arg,
+@@ -4978,6 +4980,19 @@ static int img_dd_skip(const char *arg,
      return 0;
  }
  
@@ -90,7 +90,7 @@ index 2575e97b43..8ec68b346f 100644
  static int img_dd(int argc, char **argv)
  {
      int ret = 0;
-@@ -5112,6 +5127,7 @@ static int img_dd(int argc, char **argv)
+@@ -5018,6 +5033,7 @@ static int img_dd(int argc, char **argv)
          { "if", img_dd_if, C_IF },
          { "of", img_dd_of, C_OF },
          { "skip", img_dd_skip, C_SKIP },
@@ -98,7 +98,7 @@ index 2575e97b43..8ec68b346f 100644
          { NULL, NULL, 0 }
      };
      const struct option long_options[] = {
-@@ -5187,91 +5203,112 @@ static int img_dd(int argc, char **argv)
+@@ -5093,91 +5109,112 @@ static int img_dd(int argc, char **argv)
          arg = NULL;
      }
  
@@ -275,7 +275,7 @@ index 2575e97b43..8ec68b346f 100644
      }
  
      if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz ||
-@@ -5288,20 +5325,43 @@ static int img_dd(int argc, char **argv)
+@@ -5194,20 +5231,43 @@ static int img_dd(int argc, char **argv)
      in.buf = g_new(uint8_t, in.bsz);
  
      for (out_pos = 0; in_pos < size; ) {

debian/patches/pve/0010-PVE-Up-qemu-img-dd-add-isize-parameter.patch

@@ -16,10 +16,10 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  1 file changed, 25 insertions(+), 3 deletions(-)
 
 diff --git a/qemu-img.c b/qemu-img.c
-index 8ec68b346f..b98184bba1 100644
+index 220e6ec577..58bf9b43d1 100644
 --- a/qemu-img.c
 +++ b/qemu-img.c
-@@ -4994,11 +4994,13 @@ static int img_bitmap(int argc, char **argv)
+@@ -4900,11 +4900,13 @@ static int img_bitmap(int argc, char **argv)
  #define C_OF      010
  #define C_SKIP    020
  #define C_OSIZE   040
@@ -33,7 +33,7 @@ index 8ec68b346f..b98184bba1 100644
  };
  
  struct DdIo {
-@@ -5087,6 +5089,19 @@ static int img_dd_osize(const char *arg,
+@@ -4993,6 +4995,19 @@ static int img_dd_osize(const char *arg,
      return 0;
  }
  
@@ -53,7 +53,7 @@ index 8ec68b346f..b98184bba1 100644
  static int img_dd(int argc, char **argv)
  {
      int ret = 0;
-@@ -5101,12 +5116,14 @@ static int img_dd(int argc, char **argv)
+@@ -5007,12 +5022,14 @@ static int img_dd(int argc, char **argv)
      int c, i;
      const char *out_fmt = "raw";
      const char *fmt = NULL;
@@ -69,7 +69,7 @@ index 8ec68b346f..b98184bba1 100644
      };
      struct DdIo in = {
          .bsz = 512, /* Block size is by default 512 bytes */
-@@ -5128,6 +5145,7 @@ static int img_dd(int argc, char **argv)
+@@ -5034,6 +5051,7 @@ static int img_dd(int argc, char **argv)
          { "of", img_dd_of, C_OF },
          { "skip", img_dd_skip, C_SKIP },
          { "osize", img_dd_osize, C_OSIZE },
@@ -77,7 +77,7 @@ index 8ec68b346f..b98184bba1 100644
          { NULL, NULL, 0 }
      };
      const struct option long_options[] = {
-@@ -5324,9 +5342,10 @@ static int img_dd(int argc, char **argv)
+@@ -5230,9 +5248,10 @@ static int img_dd(int argc, char **argv)
  
      in.buf = g_new(uint8_t, in.bsz);
  
@@ -90,7 +90,7 @@ index 8ec68b346f..b98184bba1 100644
          if (blk1) {
              in_ret = blk_pread(blk1, in_pos, bytes, in.buf, 0);
              if (in_ret == 0) {
-@@ -5335,6 +5354,9 @@ static int img_dd(int argc, char **argv)
+@@ -5241,6 +5260,9 @@ static int img_dd(int argc, char **argv)
          } else {
              in_ret = read(STDIN_FILENO, in.buf, bytes);
              if (in_ret == 0) {

debian/patches/pve/0011-PVE-Up-qemu-img-dd-add-n-skip_create.patch

@@ -13,10 +13,10 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  3 files changed, 26 insertions(+), 12 deletions(-)
 
 diff --git a/docs/tools/qemu-img.rst b/docs/tools/qemu-img.rst
-index 3653adb963..d83e8fb3c0 100644
+index 15aeddc6d8..5e713e231d 100644
 --- a/docs/tools/qemu-img.rst
 +++ b/docs/tools/qemu-img.rst
-@@ -212,6 +212,10 @@ Parameters to convert subcommand:
+@@ -208,6 +208,10 @@ Parameters to convert subcommand:
  
  Parameters to dd subcommand:
  
@@ -27,7 +27,7 @@ index 3653adb963..d83e8fb3c0 100644
  .. program:: qemu-img-dd
  
  .. option:: bs=BLOCK_SIZE
-@@ -492,7 +496,7 @@ Command description:
+@@ -488,7 +492,7 @@ Command description:
    it doesn't need to be specified separately in this case.
  
  
@@ -36,7 +36,7 @@ index 3653adb963..d83e8fb3c0 100644
  
    dd copies from *INPUT* file to *OUTPUT* file converting it from
    *FMT* format to *OUTPUT_FMT* format.
-@@ -503,6 +507,11 @@ Command description:
+@@ -499,6 +503,11 @@ Command description:
  
    The size syntax is similar to :manpage:`dd(1)`'s size syntax.
  
@@ -49,10 +49,10 @@ index 3653adb963..d83e8fb3c0 100644
  
    Give information about the disk image *FILENAME*. Use it in
 diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx
-index 048788b23d..0b29a67a06 100644
+index d1616c045a..b5b0bb4467 100644
 --- a/qemu-img-cmds.hx
 +++ b/qemu-img-cmds.hx
-@@ -60,9 +60,9 @@ SRST
+@@ -58,9 +58,9 @@ SRST
  ERST
  
  DEF("dd", img_dd,
@@ -65,10 +65,10 @@ index 048788b23d..0b29a67a06 100644
  
  DEF("info", img_info,
 diff --git a/qemu-img.c b/qemu-img.c
-index b98184bba1..6fc8384f64 100644
+index 58bf9b43d1..9d414d639b 100644
 --- a/qemu-img.c
 +++ b/qemu-img.c
-@@ -5118,7 +5118,7 @@ static int img_dd(int argc, char **argv)
+@@ -5024,7 +5024,7 @@ static int img_dd(int argc, char **argv)
      const char *fmt = NULL;
      int64_t size = 0, readsize = 0;
      int64_t out_pos, in_pos;
@@ -77,7 +77,7 @@ index b98184bba1..6fc8384f64 100644
      struct DdInfo dd = {
          .flags = 0,
          .count = 0,
-@@ -5156,7 +5156,7 @@ static int img_dd(int argc, char **argv)
+@@ -5062,7 +5062,7 @@ static int img_dd(int argc, char **argv)
          { 0, 0, 0, 0 }
      };
  
@@ -86,7 +86,7 @@ index b98184bba1..6fc8384f64 100644
          if (c == EOF) {
              break;
          }
-@@ -5176,6 +5176,9 @@ static int img_dd(int argc, char **argv)
+@@ -5082,6 +5082,9 @@ static int img_dd(int argc, char **argv)
          case 'h':
              help();
              break;
@@ -96,7 +96,7 @@ index b98184bba1..6fc8384f64 100644
          case 'U':
              force_share = true;
              break;
-@@ -5306,13 +5309,15 @@ static int img_dd(int argc, char **argv)
+@@ -5212,13 +5215,15 @@ static int img_dd(int argc, char **argv)
                                  size - in.bsz * in.offset, &error_abort);
          }
  

debian/patches/pve/0012-qemu-img-dd-add-l-option-for-loading-a-snapshot.patch

@@ -12,10 +12,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  3 files changed, 36 insertions(+), 7 deletions(-)
 
 diff --git a/docs/tools/qemu-img.rst b/docs/tools/qemu-img.rst
-index d83e8fb3c0..61c6b21859 100644
+index 5e713e231d..9390d5e5cf 100644
 --- a/docs/tools/qemu-img.rst
 +++ b/docs/tools/qemu-img.rst
-@@ -496,10 +496,10 @@ Command description:
+@@ -492,10 +492,10 @@ Command description:
    it doesn't need to be specified separately in this case.
  
  
@@ -30,10 +30,10 @@ index d83e8fb3c0..61c6b21859 100644
    The data is by default read and written using blocks of 512 bytes but can be
    modified by specifying *BLOCK_SIZE*. If count=\ *BLOCKS* is specified
 diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx
-index 0b29a67a06..758f397232 100644
+index b5b0bb4467..36f97e1f19 100644
 --- a/qemu-img-cmds.hx
 +++ b/qemu-img-cmds.hx
-@@ -60,9 +60,9 @@ SRST
+@@ -58,9 +58,9 @@ SRST
  ERST
  
  DEF("dd", img_dd,
@@ -46,10 +46,10 @@ index 0b29a67a06..758f397232 100644
  
  DEF("info", img_info,
 diff --git a/qemu-img.c b/qemu-img.c
-index 6fc8384f64..a6c88e0860 100644
+index 9d414d639b..e13a12137b 100644
 --- a/qemu-img.c
 +++ b/qemu-img.c
-@@ -5110,6 +5110,7 @@ static int img_dd(int argc, char **argv)
+@@ -5016,6 +5016,7 @@ static int img_dd(int argc, char **argv)
      BlockDriver *drv = NULL, *proto_drv = NULL;
      BlockBackend *blk1 = NULL, *blk2 = NULL;
      QemuOpts *opts = NULL;
@@ -57,7 +57,7 @@ index 6fc8384f64..a6c88e0860 100644
      QemuOptsList *create_opts = NULL;
      Error *local_err = NULL;
      bool image_opts = false;
-@@ -5119,6 +5120,7 @@ static int img_dd(int argc, char **argv)
+@@ -5025,6 +5026,7 @@ static int img_dd(int argc, char **argv)
      int64_t size = 0, readsize = 0;
      int64_t out_pos, in_pos;
      bool force_share = false, skip_create = false;
@@ -65,7 +65,7 @@ index 6fc8384f64..a6c88e0860 100644
      struct DdInfo dd = {
          .flags = 0,
          .count = 0,
-@@ -5156,7 +5158,7 @@ static int img_dd(int argc, char **argv)
+@@ -5062,7 +5064,7 @@ static int img_dd(int argc, char **argv)
          { 0, 0, 0, 0 }
      };
  
@@ -74,7 +74,7 @@ index 6fc8384f64..a6c88e0860 100644
          if (c == EOF) {
              break;
          }
-@@ -5179,6 +5181,19 @@ static int img_dd(int argc, char **argv)
+@@ -5085,6 +5087,19 @@ static int img_dd(int argc, char **argv)
          case 'n':
              skip_create = true;
              break;
@@ -94,7 +94,7 @@ index 6fc8384f64..a6c88e0860 100644
          case 'U':
              force_share = true;
              break;
-@@ -5238,11 +5253,24 @@ static int img_dd(int argc, char **argv)
+@@ -5144,11 +5159,24 @@ static int img_dd(int argc, char **argv)
      if (dd.flags & C_IF) {
          blk1 = img_open(image_opts, in.filename, fmt, 0, false, false,
                          force_share);
@@ -120,7 +120,7 @@ index 6fc8384f64..a6c88e0860 100644
      }
  
      if (dd.flags & C_OSIZE) {
-@@ -5397,6 +5425,7 @@ static int img_dd(int argc, char **argv)
+@@ -5303,6 +5331,7 @@ static int img_dd(int argc, char **argv)
  out:
      g_free(arg);
      qemu_opts_del(opts);

debian/patches/pve/0013-PVE-virtio-balloon-improve-query-balloon.patch

@@ -18,10 +18,10 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  4 files changed, 82 insertions(+), 4 deletions(-)
 
 diff --git a/hw/core/machine-hmp-cmds.c b/hw/core/machine-hmp-cmds.c
-index a6ff6a4875..e7f74d1c63 100644
+index c3e55ef9e9..0e32e6201f 100644
 --- a/hw/core/machine-hmp-cmds.c
 +++ b/hw/core/machine-hmp-cmds.c
-@@ -175,7 +175,35 @@ void hmp_info_balloon(Monitor *mon, const QDict *qdict)
+@@ -169,7 +169,35 @@ void hmp_info_balloon(Monitor *mon, const QDict *qdict)
          return;
      }
  
@@ -59,10 +59,10 @@ index a6ff6a4875..e7f74d1c63 100644
      qapi_free_BalloonInfo(info);
  }
 diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
-index 609e39a821..8cb6dfcac3 100644
+index d004cf29d2..2660ed520b 100644
 --- a/hw/virtio/virtio-balloon.c
 +++ b/hw/virtio/virtio-balloon.c
-@@ -781,8 +781,37 @@ static uint64_t virtio_balloon_get_features(VirtIODevice *vdev, uint64_t f,
+@@ -782,8 +782,37 @@ static uint64_t virtio_balloon_get_features(VirtIODevice *vdev, uint64_t f,
  static void virtio_balloon_stat(void *opaque, BalloonInfo *info)
  {
      VirtIOBalloon *dev = opaque;
@@ -103,10 +103,10 @@ index 609e39a821..8cb6dfcac3 100644
  
  static void virtio_balloon_to_target(void *opaque, ram_addr_t target)
 diff --git a/qapi/machine.json b/qapi/machine.json
-index e8b60641f2..2054cdc70d 100644
+index a08b6576ca..5c9a4d55f4 100644
 --- a/qapi/machine.json
 +++ b/qapi/machine.json
-@@ -1079,9 +1079,29 @@
+@@ -1063,9 +1063,29 @@
  # @actual: the logical size of the VM in bytes Formula used:
  #     logical_vm_size = vm_ram_size - balloon_size
  #
@@ -138,10 +138,10 @@ index e8b60641f2..2054cdc70d 100644
  ##
  # @query-balloon:
 diff --git a/qapi/pragma.json b/qapi/pragma.json
-index 59fbe74b8c..be8fa304c5 100644
+index 7f810b0e97..325e684411 100644
 --- a/qapi/pragma.json
 +++ b/qapi/pragma.json
-@@ -90,6 +90,7 @@
+@@ -35,6 +35,7 @@
      'member-name-exceptions': [     # visible in:
          'ACPISlotType',             # query-acpi-ospm-status
          'AcpiTableOptions',         # -acpitable

debian/patches/pve/0014-PVE-qapi-modify-query-machines.patch

@@ -13,10 +13,10 @@ Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
  2 files changed, 9 insertions(+), 1 deletion(-)
 
 diff --git a/hw/core/machine-qmp-cmds.c b/hw/core/machine-qmp-cmds.c
-index 4b72009cd3..314351cdff 100644
+index 3860a50c3b..40821e2317 100644
 --- a/hw/core/machine-qmp-cmds.c
 +++ b/hw/core/machine-qmp-cmds.c
-@@ -90,6 +90,12 @@ MachineInfoList *qmp_query_machines(Error **errp)
+@@ -91,6 +91,12 @@ MachineInfoList *qmp_query_machines(Error **errp)
          info->numa_mem_supported = mc->numa_mem_supported;
          info->deprecated = !!mc->deprecation_reason;
          info->acpi = !!object_class_property_find(OBJECT_CLASS(mc), "acpi");
@@ -30,10 +30,10 @@ index 4b72009cd3..314351cdff 100644
              info->default_cpu_type = g_strdup(mc->default_cpu_type);
          }
 diff --git a/qapi/machine.json b/qapi/machine.json
-index 2054cdc70d..a024d5b05d 100644
+index 5c9a4d55f4..fbb61f18e4 100644
 --- a/qapi/machine.json
 +++ b/qapi/machine.json
-@@ -146,6 +146,8 @@
+@@ -139,6 +139,8 @@
  #
  # @is-default: whether the machine is default
  #
@@ -42,7 +42,7 @@ index 2054cdc70d..a024d5b05d 100644
  # @cpu-max: maximum number of CPUs supported by the machine type
  #     (since 1.5)
  #
-@@ -170,7 +172,7 @@
+@@ -163,7 +165,7 @@
  ##
  { 'struct': 'MachineInfo',
    'data': { 'name': 'str', '*alias': 'str',

debian/patches/pve/0015-PVE-qapi-modify-spice-query.patch

@@ -14,10 +14,10 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  2 files changed, 7 insertions(+)
 
 diff --git a/qapi/ui.json b/qapi/ui.json
-index f610bce118..6ea26a9acb 100644
+index 006616aa77..dfd1d3e36b 100644
 --- a/qapi/ui.json
 +++ b/qapi/ui.json
-@@ -314,11 +314,14 @@
+@@ -317,11 +317,14 @@
  #
  # @channels: a list of @SpiceChannel for each active spice channel
  #
@@ -33,7 +33,7 @@ index f610bce118..6ea26a9acb 100644
    'if': 'CONFIG_SPICE' }
  
 diff --git a/ui/spice-core.c b/ui/spice-core.c
-index ea20e6153c..55a15fba8b 100644
+index b20c25aee0..26baeb7846 100644
 --- a/ui/spice-core.c
 +++ b/ui/spice-core.c
 @@ -548,6 +548,10 @@ static SpiceInfo *qmp_query_spice_real(Error **errp)

debian/patches/pve/0016-PVE-add-IOChannel-implementation-for-savevm-async.patch

@@ -14,21 +14,20 @@ Additionally, allows tracking the current position from the outside
 (intended to be used for progress tracking).
 
 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 ---
- migration/channel-savevm-async.c | 184 +++++++++++++++++++++++++++++++
+ migration/channel-savevm-async.c | 183 +++++++++++++++++++++++++++++++
  migration/channel-savevm-async.h |  51 +++++++++
  migration/meson.build            |   1 +
- 3 files changed, 236 insertions(+)
+ 3 files changed, 235 insertions(+)
  create mode 100644 migration/channel-savevm-async.c
  create mode 100644 migration/channel-savevm-async.h
 
 diff --git a/migration/channel-savevm-async.c b/migration/channel-savevm-async.c
 new file mode 100644
-index 0000000000..081a192f49
+index 0000000000..aab081ce07
 --- /dev/null
 +++ b/migration/channel-savevm-async.c
-@@ -0,0 +1,184 @@
+@@ -0,0 +1,183 @@
 +/*
 + * QIO Channel implementation to be used by savevm-async QMP calls
 + */
@@ -175,9 +174,8 @@ index 0000000000..081a192f49
 +
 +static void
 +qio_channel_savevm_async_set_aio_fd_handler(QIOChannel *ioc,
-+                                            AioContext *read_ctx,
++                                            AioContext *ctx,
 +                                            IOHandler *io_read,
-+                                            AioContext *write_ctx,
 +                                            IOHandler *io_write,
 +                                            void *opaque)
 +{
@@ -271,7 +269,7 @@ index 0000000000..17ae2cb261
 +
 +#endif /* QIO_CHANNEL_SAVEVM_ASYNC_H */
 diff --git a/migration/meson.build b/migration/meson.build
-index 1eeb915ff6..95d1cf2250 100644
+index 1ae28523a1..37ddcb5d60 100644
 --- a/migration/meson.build
 +++ b/migration/meson.build
 @@ -13,6 +13,7 @@ system_ss.add(files(

debian/patches/pve/0017-PVE-add-savevm-async-for-background-state-snapshots.patch

@@ -27,9 +27,7 @@ Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
 [FE: further improve aborting
      adapt to removal of QEMUFileOps
      improve condition for entering final stage
-     adapt to QAPI and other changes for 8.2
-     make sure to not call vm_start() from coroutine
-     stop CPU throttling after finishing]
+     adapt to QAPI and other changes for 8.0]
 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
  hmp-commands-info.hx         |  13 +
@@ -37,17 +35,17 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  include/migration/snapshot.h |   2 +
  include/monitor/hmp.h        |   3 +
  migration/meson.build        |   1 +
- migration/savevm-async.c     | 545 +++++++++++++++++++++++++++++++++++
+ migration/savevm-async.c     | 531 +++++++++++++++++++++++++++++++++++
  monitor/hmp-cmds.c           |  38 +++
  qapi/migration.json          |  34 +++
- qapi/misc.json               |  18 ++
+ qapi/misc.json               |  16 ++
  qemu-options.hx              |  12 +
- system/vl.c                  |  10 +
- 11 files changed, 693 insertions(+)
+ softmmu/vl.c                 |  10 +
+ 11 files changed, 677 insertions(+)
  create mode 100644 migration/savevm-async.c
 
 diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
-index ad1b1306e3..d5ab880492 100644
+index f5b37eb74a..10fdd822e0 100644
 --- a/hmp-commands-info.hx
 +++ b/hmp-commands-info.hx
 @@ -525,6 +525,19 @@ SRST
@@ -71,10 +69,10 @@ index ad1b1306e3..d5ab880492 100644
          .name       = "balloon",
          .args_type  = "",
 diff --git a/hmp-commands.hx b/hmp-commands.hx
-index 2e2a3bcf98..7506de251c 100644
+index 2cbd0f77a0..e352f86872 100644
 --- a/hmp-commands.hx
 +++ b/hmp-commands.hx
-@@ -1862,3 +1862,20 @@ SRST
+@@ -1865,3 +1865,20 @@ SRST
    List event channels in the guest
  ERST
  #endif
@@ -96,12 +94,12 @@ index 2e2a3bcf98..7506de251c 100644
 +        .coroutine  = true,
 +    },
 diff --git a/include/migration/snapshot.h b/include/migration/snapshot.h
-index 9e4dcaaa75..2581730d74 100644
+index e72083b117..c846d37806 100644
 --- a/include/migration/snapshot.h
 +++ b/include/migration/snapshot.h
-@@ -68,4 +68,6 @@ bool delete_snapshot(const char *name,
-  */
- void load_snapshot_resume(RunState state);
+@@ -61,4 +61,6 @@ bool delete_snapshot(const char *name,
+                     bool has_devices, strList *devices,
+                     Error **errp);
  
 +int load_snapshot_from_blockdev(const char *filename, Error **errp);
 +
@@ -128,10 +126,10 @@ index 13f9a2dedb..7a7def7530 100644
  void coroutine_fn hmp_screendump(Monitor *mon, const QDict *qdict);
  void hmp_chardev_add(Monitor *mon, const QDict *qdict);
 diff --git a/migration/meson.build b/migration/meson.build
-index 95d1cf2250..800f12a60d 100644
+index 37ddcb5d60..07f6057acc 100644
 --- a/migration/meson.build
 +++ b/migration/meson.build
-@@ -28,6 +28,7 @@ system_ss.add(files(
+@@ -26,6 +26,7 @@ system_ss.add(files(
    'options.c',
    'postcopy-ram.c',
    'savevm.c',
@@ -141,10 +139,10 @@ index 95d1cf2250..800f12a60d 100644
    'threadinfo.c',
 diff --git a/migration/savevm-async.c b/migration/savevm-async.c
 new file mode 100644
-index 0000000000..1af32604c7
+index 0000000000..e9fc18fb10
 --- /dev/null
 +++ b/migration/savevm-async.c
-@@ -0,0 +1,545 @@
+@@ -0,0 +1,531 @@
 +#include "qemu/osdep.h"
 +#include "migration/channel-savevm-async.h"
 +#include "migration/migration.h"
@@ -155,7 +153,6 @@ index 0000000000..1af32604c7
 +#include "migration/global_state.h"
 +#include "migration/ram.h"
 +#include "migration/qemu-file.h"
-+#include "sysemu/cpu-throttle.h"
 +#include "sysemu/sysemu.h"
 +#include "sysemu/runstate.h"
 +#include "block/block.h"
@@ -303,6 +300,7 @@ index 0000000000..1af32604c7
 +static void process_savevm_finalize(void *opaque)
 +{
 +    int ret;
++    AioContext *iohandler_ctx = iohandler_get_aio_context();
 +    MigrationState *ms = migrate_get_current();
 +
 +    bool aborted = savevm_aborted();
@@ -319,7 +317,9 @@ index 0000000000..1af32604c7
 +     * so move it back. It can stay in the main context and live out its live
 +     * there, since we're done with it after this method ends anyway.
 +     */
++    aio_context_acquire(iohandler_ctx);
 +    blk_set_aio_context(snap_state.target, qemu_get_aio_context(), NULL);
++    aio_context_release(iohandler_ctx);
 +
 +    ret = vm_stop_force_state(RUN_STATE_FINISH_MIGRATE);
 +    if (ret < 0) {
@@ -344,12 +344,6 @@ index 0000000000..1af32604c7
 +        ret || aborted ? MIGRATION_STATUS_FAILED : MIGRATION_STATUS_COMPLETED);
 +    ms->to_dst_file = NULL;
 +
-+    /*
-+     * Same as in migration_iteration_finish(): saving RAM might've turned on CPU throttling for
-+     * auto-converge, make sure to disable it.
-+     */
-+    cpu_throttle_stop();
-+
 +    qemu_savevm_state_cleanup();
 +
 +    ret = save_snapshot_cleanup();
@@ -402,12 +396,12 @@ index 0000000000..1af32604c7
 +         * lock. Similar to what is done in migration.c, call the exact variant
 +         * only once pend_precopy in the estimate is below the threshold.
 +         */
-+        bql_unlock();
++        qemu_mutex_unlock_iothread();
 +        qemu_savevm_state_pending_estimate(&pend_precopy, &pend_postcopy);
 +        if (pend_precopy <= threshold) {
 +            qemu_savevm_state_pending_exact(&pend_precopy, &pend_postcopy);
 +        }
-+        bql_lock();
++        qemu_mutex_lock_iothread();
 +        pending_size = pend_precopy + pend_postcopy;
 +
 +        /*
@@ -447,25 +441,21 @@ index 0000000000..1af32604c7
 +     * so move there now and after every flush.
 +     */
 +    aio_co_reschedule_self(qemu_get_aio_context());
-+    bdrv_graph_co_rdlock();
-+    bs = bdrv_first(&it);
-+    bdrv_graph_co_rdunlock();
-+    while (bs) {
++    for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
 +        /* target has BDRV_O_NO_FLUSH, no sense calling bdrv_flush on it */
-+        if (bs != blk_bs(snap_state.target)) {
-+            AioContext *bs_ctx = bdrv_get_aio_context(bs);
-+            if (bs_ctx != qemu_get_aio_context()) {
-+                DPRINTF("savevm: async flushing drive %s\n", bs->filename);
-+                aio_co_reschedule_self(bs_ctx);
-+                bdrv_graph_co_rdlock();
-+                bdrv_flush(bs);
-+                bdrv_graph_co_rdunlock();
-+                aio_co_reschedule_self(qemu_get_aio_context());
-+            }
++        if (bs == blk_bs(snap_state.target)) {
++            continue;
++        }
++
++        AioContext *bs_ctx = bdrv_get_aio_context(bs);
++        if (bs_ctx != qemu_get_aio_context()) {
++            DPRINTF("savevm: async flushing drive %s\n", bs->filename);
++            aio_co_reschedule_self(bs_ctx);
++            bdrv_graph_co_rdlock();
++            bdrv_flush(bs);
++            bdrv_graph_co_rdunlock();
++            aio_co_reschedule_self(qemu_get_aio_context());
 +        }
-+        bdrv_graph_co_rdlock();
-+        bs = bdrv_next(&it);
-+        bdrv_graph_co_rdunlock();
 +    }
 +
 +    DPRINTF("timing: async flushing took %ld ms\n",
@@ -488,7 +478,7 @@ index 0000000000..1af32604c7
 +        return;
 +    }
 +
-+    if (migration_is_running()) {
++    if (migration_is_running(ms->state)) {
 +        error_set(errp, ERROR_CLASS_GENERIC_ERROR, QERR_MIGRATION_ACTIVE);
 +        return;
 +    }
@@ -545,10 +535,9 @@ index 0000000000..1af32604c7
 +     * State is cleared in process_savevm_co, but has to be initialized
 +     * here (blocking main thread, from QMP) to avoid race conditions.
 +     */
-+    if (migrate_init(ms, errp)) {
-+        return;
-+    }
++    migrate_init(ms);
 +    memset(&mig_stats, 0, sizeof(mig_stats));
++    memset(&compression_counters, 0, sizeof(compression_counters));
 +    ms->to_dst_file = snap_state.file;
 +
 +    error_setg(&snap_state.blocker, "block device is in use by savevm");
@@ -557,8 +546,10 @@ index 0000000000..1af32604c7
 +    snap_state.state = SAVE_STATE_ACTIVE;
 +    snap_state.finalize_bh = qemu_bh_new(process_savevm_finalize, &snap_state);
 +    snap_state.co = qemu_coroutine_create(&process_savevm_co, NULL);
++    qemu_mutex_unlock_iothread();
 +    qemu_savevm_state_header(snap_state.file);
 +    qemu_savevm_state_setup(snap_state.file);
++    qemu_mutex_lock_iothread();
 +
 +    /* Async processing from here on out happens in iohandler context, so let
 +     * the target bdrv have its home there.
@@ -579,10 +570,29 @@ index 0000000000..1af32604c7
 +    }
 +}
 +
-+static void coroutine_fn wait_for_close_co(void *opaque)
++void coroutine_fn qmp_savevm_end(Error **errp)
 +{
 +    int64_t timeout;
 +
++    if (snap_state.state == SAVE_STATE_DONE) {
++        error_set(errp, ERROR_CLASS_GENERIC_ERROR,
++                  "VM snapshot not started\n");
++        return;
++    }
++
++    if (snap_state.state == SAVE_STATE_ACTIVE) {
++        snap_state.state = SAVE_STATE_CANCELLED;
++        goto wait_for_close;
++    }
++
++    if (snap_state.saved_vm_running) {
++        vm_start();
++        snap_state.saved_vm_running = false;
++    }
++
++    snap_state.state = SAVE_STATE_DONE;
++
++wait_for_close:
 +    if (!snap_state.target) {
 +        DPRINTF("savevm-end: no target file open\n");
 +        return;
@@ -610,32 +620,6 @@ index 0000000000..1af32604c7
 +    DPRINTF("savevm-end: cleanup done\n");
 +}
 +
-+void qmp_savevm_end(Error **errp)
-+{
-+    if (snap_state.state == SAVE_STATE_DONE) {
-+        error_set(errp, ERROR_CLASS_GENERIC_ERROR,
-+                  "VM snapshot not started\n");
-+        return;
-+    }
-+
-+    Coroutine *wait_for_close = qemu_coroutine_create(wait_for_close_co, NULL);
-+
-+    if (snap_state.state == SAVE_STATE_ACTIVE) {
-+        snap_state.state = SAVE_STATE_CANCELLED;
-+        qemu_coroutine_enter(wait_for_close);
-+        return;
-+    }
-+
-+    if (snap_state.saved_vm_running) {
-+        vm_start();
-+        snap_state.saved_vm_running = false;
-+    }
-+
-+    snap_state.state = SAVE_STATE_DONE;
-+
-+    qemu_coroutine_enter(wait_for_close);
-+}
-+
 +int load_snapshot_from_blockdev(const char *filename, Error **errp)
 +{
 +    BlockBackend *be;
@@ -691,7 +675,7 @@ index 0000000000..1af32604c7
 +    return ret;
 +}
 diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
-index 871898ac46..ef4634e5c1 100644
+index 6c559b48c8..91be698308 100644
 --- a/monitor/hmp-cmds.c
 +++ b/monitor/hmp-cmds.c
 @@ -22,6 +22,7 @@
@@ -701,7 +685,7 @@ index 871898ac46..ef4634e5c1 100644
 +#include "qapi/qapi-commands-migration.h"
  #include "qapi/qapi-commands-misc.h"
  #include "qapi/qmp/qdict.h"
- #include "qemu/cutils.h"
+ #include "qapi/qmp/qerror.h"
 @@ -443,3 +444,40 @@ void hmp_info_mtree(Monitor *mon, const QDict *qdict)
  
      mtree_info(flatview, dispatch_tree, owner, disabled);
@@ -744,10 +728,10 @@ index 871898ac46..ef4634e5c1 100644
 +    }
 +}
 diff --git a/qapi/migration.json b/qapi/migration.json
-index 8c65b90328..ed20d066cd 100644
+index 8843e74b59..aca0ca1ac1 100644
 --- a/qapi/migration.json
 +++ b/qapi/migration.json
-@@ -297,6 +297,40 @@
+@@ -291,6 +291,40 @@
             '*dirty-limit-throttle-time-per-round': 'uint64',
             '*dirty-limit-ring-full-time': 'uint64'} }
  
@@ -789,10 +773,10 @@ index 8c65b90328..ed20d066cd 100644
  # @query-migrate:
  #
 diff --git a/qapi/misc.json b/qapi/misc.json
-index ec30e5c570..3c68633f68 100644
+index cda2effa81..94a58bb0bf 100644
 --- a/qapi/misc.json
 +++ b/qapi/misc.json
-@@ -454,6 +454,24 @@
+@@ -456,6 +456,22 @@
  ##
  { 'command': 'query-fdsets', 'returns': ['FdsetInfo'] }
  
@@ -801,8 +785,6 @@ index ec30e5c570..3c68633f68 100644
 +#
 +# Prepare for snapshot and halt VM. Save VM state to statefile.
 +#
-+# @statefile: target file that state should be written to.
-+#
 +##
 +{ 'command': 'savevm-start', 'data': { '*statefile': 'str' } }
 +
@@ -812,16 +794,16 @@ index ec30e5c570..3c68633f68 100644
 +# Resume VM after a snapshot.
 +#
 +##
-+{ 'command': 'savevm-end' }
++{ 'command': 'savevm-end', 'coroutine': true }
 +
  ##
  # @CommandLineParameterType:
  #
 diff --git a/qemu-options.hx b/qemu-options.hx
-index 8ce85d4559..511ab9415e 100644
+index 8073f5edf5..dc1ececc9c 100644
 --- a/qemu-options.hx
 +++ b/qemu-options.hx
-@@ -4610,6 +4610,18 @@ SRST
+@@ -4483,6 +4483,18 @@ SRST
      Start right away with a saved state (``loadvm`` in monitor)
  ERST
  
@@ -840,11 +822,11 @@ index 8ce85d4559..511ab9415e 100644
  #ifndef _WIN32
  DEF("daemonize", 0, QEMU_OPTION_daemonize, \
      "-daemonize      daemonize QEMU after initializing\n", QEMU_ARCH_ALL)
-diff --git a/system/vl.c b/system/vl.c
-index c644222982..2738ab7c91 100644
---- a/system/vl.c
-+++ b/system/vl.c
-@@ -163,6 +163,7 @@ static const char *accelerators;
+diff --git a/softmmu/vl.c b/softmmu/vl.c
+index c9e9ede237..3f2681aded 100644
+--- a/softmmu/vl.c
++++ b/softmmu/vl.c
+@@ -164,6 +164,7 @@ static const char *accelerators;
  static bool have_custom_ram_size;
  static const char *ram_memdev_id;
  static QDict *machine_opts_dict;
@@ -852,10 +834,10 @@ index c644222982..2738ab7c91 100644
  static QTAILQ_HEAD(, ObjectOption) object_opts = QTAILQ_HEAD_INITIALIZER(object_opts);
  static QTAILQ_HEAD(, DeviceOption) device_opts = QTAILQ_HEAD_INITIALIZER(device_opts);
  static int display_remote;
-@@ -2712,6 +2713,12 @@ void qmp_x_exit_preconfig(Error **errp)
-         RunState state = autostart ? RUN_STATE_RUNNING : runstate_get();
+@@ -2647,6 +2648,12 @@ void qmp_x_exit_preconfig(Error **errp)
+ 
+     if (loadvm) {
          load_snapshot(loadvm, NULL, false, NULL, &error_fatal);
-         load_snapshot_resume(state);
 +    } else if (loadstate) {
 +        Error *local_err = NULL;
 +        if (load_snapshot_from_blockdev(loadstate, &local_err) < 0) {
@@ -865,7 +847,7 @@ index c644222982..2738ab7c91 100644
      }
      if (replay_mode != REPLAY_MODE_NONE) {
          replay_vmstate_init();
-@@ -3259,6 +3266,9 @@ void qemu_init(int argc, char **argv)
+@@ -3194,6 +3201,9 @@ void qemu_init(int argc, char **argv)
              case QEMU_OPTION_loadvm:
                  loadvm = optarg;
                  break;

debian/patches/pve/0018-PVE-add-optional-buffer-size-to-QEMUFile.patch

@@ -13,18 +13,18 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 [FE: adapt to removal of QEMUFileOps]
 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
- migration/qemu-file.c    | 50 +++++++++++++++++++++++++++-------------
+ migration/qemu-file.c    | 49 +++++++++++++++++++++++++++-------------
  migration/qemu-file.h    |  2 ++
  migration/savevm-async.c |  5 ++--
- 3 files changed, 39 insertions(+), 18 deletions(-)
+ 3 files changed, 38 insertions(+), 18 deletions(-)
 
 diff --git a/migration/qemu-file.c b/migration/qemu-file.c
-index a10882d47f..19c1de0472 100644
+index 19c33c9985..e9ffff0f0a 100644
 --- a/migration/qemu-file.c
 +++ b/migration/qemu-file.c
-@@ -35,8 +35,8 @@
- #include "rdma.h"
- #include "io/channel-file.h"
+@@ -33,8 +33,8 @@
+ #include "options.h"
+ #include "qapi/error.h"
  
 -#define IO_BUF_SIZE 32768
 -#define MAX_IOV_SIZE MIN_CONST(IOV_MAX, 64)
@@ -32,8 +32,8 @@ index a10882d47f..19c1de0472 100644
 +#define MAX_IOV_SIZE MIN_CONST(IOV_MAX, 256)
  
  struct QEMUFile {
-     QIOChannel *ioc;
-@@ -44,7 +44,8 @@ struct QEMUFile {
+     const QEMUFileHooks *hooks;
+@@ -46,7 +46,8 @@ struct QEMUFile {
  
      int buf_index;
      int buf_size; /* 0 when writing */
@@ -43,7 +43,7 @@ index a10882d47f..19c1de0472 100644
  
      DECLARE_BITMAP(may_free, MAX_IOV_SIZE);
      struct iovec iov[MAX_IOV_SIZE];
-@@ -101,7 +102,9 @@ int qemu_file_shutdown(QEMUFile *f)
+@@ -100,7 +101,9 @@ int qemu_file_shutdown(QEMUFile *f)
      return 0;
  }
  
@@ -54,7 +54,7 @@ index a10882d47f..19c1de0472 100644
  {
      QEMUFile *f;
  
-@@ -110,6 +113,8 @@ static QEMUFile *qemu_file_new_impl(QIOChannel *ioc, bool is_writable)
+@@ -109,6 +112,8 @@ static QEMUFile *qemu_file_new_impl(QIOChannel *ioc, bool is_writable)
      object_ref(ioc);
      f->ioc = ioc;
      f->is_writable = is_writable;
@@ -63,7 +63,7 @@ index a10882d47f..19c1de0472 100644
  
      return f;
  }
-@@ -120,17 +125,27 @@ static QEMUFile *qemu_file_new_impl(QIOChannel *ioc, bool is_writable)
+@@ -119,17 +124,27 @@ static QEMUFile *qemu_file_new_impl(QIOChannel *ioc, bool is_writable)
   */
  QEMUFile *qemu_file_get_return_path(QEMUFile *f)
  {
@@ -93,8 +93,8 @@ index a10882d47f..19c1de0472 100644
 +    return qemu_file_new_impl(ioc, false, buffer_size);
  }
  
- /*
-@@ -328,7 +343,7 @@ static ssize_t coroutine_mixed_fn qemu_fill_buffer(QEMUFile *f)
+ void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks)
+@@ -375,7 +390,7 @@ static ssize_t coroutine_mixed_fn qemu_fill_buffer(QEMUFile *f)
      do {
          len = qio_channel_read(f->ioc,
                                 (char *)f->buf + pending,
@@ -103,17 +103,16 @@ index a10882d47f..19c1de0472 100644
                                 &local_error);
          if (len == QIO_CHANNEL_ERR_BLOCK) {
              if (qemu_in_coroutine()) {
-@@ -368,6 +383,9 @@ int qemu_fclose(QEMUFile *f)
-         ret = ret2;
+@@ -425,6 +440,8 @@ int qemu_fclose(QEMUFile *f)
      }
      g_clear_pointer(&f->ioc, object_unref);
-+
+ 
 +    free(f->buf);
 +
-     error_free(f->last_error_obj);
-     g_free(f);
-     trace_qemu_file_fclose();
-@@ -416,7 +434,7 @@ static void add_buf_to_iovec(QEMUFile *f, size_t len)
+     /* If any error was spotted before closing, we should report it
+      * instead of the close() return value.
+      */
+@@ -479,7 +496,7 @@ static void add_buf_to_iovec(QEMUFile *f, size_t len)
  {
      if (!add_to_iovec(f, f->buf + f->buf_index, len, false)) {
          f->buf_index += len;
@@ -122,7 +121,7 @@ index a10882d47f..19c1de0472 100644
              qemu_fflush(f);
          }
      }
-@@ -441,7 +459,7 @@ void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, size_t size)
+@@ -504,7 +521,7 @@ void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, size_t size)
      }
  
      while (size > 0) {
@@ -131,7 +130,7 @@ index a10882d47f..19c1de0472 100644
          if (l > size) {
              l = size;
          }
-@@ -587,8 +605,8 @@ size_t coroutine_mixed_fn qemu_peek_buffer(QEMUFile *f, uint8_t **buf, size_t si
+@@ -549,8 +566,8 @@ size_t coroutine_mixed_fn qemu_peek_buffer(QEMUFile *f, uint8_t **buf, size_t si
      size_t index;
  
      assert(!qemu_file_is_writable(f));
@@ -142,7 +141,7 @@ index a10882d47f..19c1de0472 100644
  
      /* The 1st byte to read from */
      index = f->buf_index + offset;
-@@ -638,7 +656,7 @@ size_t coroutine_mixed_fn qemu_get_buffer(QEMUFile *f, uint8_t *buf, size_t size
+@@ -600,7 +617,7 @@ size_t coroutine_mixed_fn qemu_get_buffer(QEMUFile *f, uint8_t *buf, size_t size
          size_t res;
          uint8_t *src;
  
@@ -151,7 +150,7 @@ index a10882d47f..19c1de0472 100644
          if (res == 0) {
              return done;
          }
-@@ -672,7 +690,7 @@ size_t coroutine_mixed_fn qemu_get_buffer(QEMUFile *f, uint8_t *buf, size_t size
+@@ -634,7 +651,7 @@ size_t coroutine_mixed_fn qemu_get_buffer(QEMUFile *f, uint8_t *buf, size_t size
   */
  size_t coroutine_mixed_fn qemu_get_buffer_in_place(QEMUFile *f, uint8_t **buf, size_t size)
  {
@@ -160,7 +159,7 @@ index a10882d47f..19c1de0472 100644
          size_t res;
          uint8_t *src = NULL;
  
-@@ -697,7 +715,7 @@ int coroutine_mixed_fn qemu_peek_byte(QEMUFile *f, int offset)
+@@ -659,7 +676,7 @@ int coroutine_mixed_fn qemu_peek_byte(QEMUFile *f, int offset)
      int index = f->buf_index + offset;
  
      assert(!qemu_file_is_writable(f));
@@ -169,7 +168,7 @@ index a10882d47f..19c1de0472 100644
  
      if (index >= f->buf_size) {
          qemu_fill_buffer(f);
-@@ -811,7 +829,7 @@ static int qemu_compress_data(z_stream *stream, uint8_t *dest, size_t dest_len,
+@@ -777,7 +794,7 @@ static int qemu_compress_data(z_stream *stream, uint8_t *dest, size_t dest_len,
  ssize_t qemu_put_compression_data(QEMUFile *f, z_stream *stream,
                                    const uint8_t *p, size_t size)
  {
@@ -179,24 +178,24 @@ index a10882d47f..19c1de0472 100644
      if (blen < compressBound(size)) {
          return -1;
 diff --git a/migration/qemu-file.h b/migration/qemu-file.h
-index 32fd4a34fd..36a0cd8cc8 100644
+index 47015f5201..1312b7c903 100644
 --- a/migration/qemu-file.h
 +++ b/migration/qemu-file.h
-@@ -30,7 +30,9 @@
- #include "io/channel.h"
+@@ -63,7 +63,9 @@ typedef struct QEMUFileHooks {
+ } QEMUFileHooks;
  
  QEMUFile *qemu_file_new_input(QIOChannel *ioc);
 +QEMUFile *qemu_file_new_input_sized(QIOChannel *ioc, size_t buffer_size);
  QEMUFile *qemu_file_new_output(QIOChannel *ioc);
 +QEMUFile *qemu_file_new_output_sized(QIOChannel *ioc, size_t buffer_size);
+ void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks);
  int qemu_fclose(QEMUFile *f);
  
- /*
 diff --git a/migration/savevm-async.c b/migration/savevm-async.c
-index 1af32604c7..be2035cd2e 100644
+index e9fc18fb10..80624fada8 100644
 --- a/migration/savevm-async.c
 +++ b/migration/savevm-async.c
-@@ -386,7 +386,7 @@ void qmp_savevm_start(const char *statefile, Error **errp)
+@@ -378,7 +378,7 @@ void qmp_savevm_start(const char *statefile, Error **errp)
  
      QIOChannel *ioc = QIO_CHANNEL(qio_channel_savevm_async_new(snap_state.target,
                                                                 &snap_state.bs_pos));
@@ -205,7 +204,7 @@ index 1af32604c7..be2035cd2e 100644
  
      if (!snap_state.file) {
          error_set(errp, ERROR_CLASS_GENERIC_ERROR, "failed to open '%s'", statefile);
-@@ -510,7 +510,8 @@ int load_snapshot_from_blockdev(const char *filename, Error **errp)
+@@ -496,7 +496,8 @@ int load_snapshot_from_blockdev(const char *filename, Error **errp)
      blk_op_block_all(be, blocker);
  
      /* restore the VM state */

debian/patches/pve/0019-PVE-block-add-the-zeroinit-block-driver-filter.patch

@@ -4,23 +4,21 @@ Date: Mon, 6 Apr 2020 12:16:47 +0200
 Subject: [PATCH] PVE: block: add the zeroinit block driver filter
 
 Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
-[FE: adapt to changed function signatures
-     adhere to block graph lock requirements
-     use dedicated function to open file child]
+[FE: adapt to changed function signatures]
 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
  block/meson.build |   1 +
- block/zeroinit.c  | 207 ++++++++++++++++++++++++++++++++++++++++++++++
- 2 files changed, 208 insertions(+)
+ block/zeroinit.c  | 200 ++++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 201 insertions(+)
  create mode 100644 block/zeroinit.c
 
 diff --git a/block/meson.build b/block/meson.build
-index e1f03fd773..b530e117b5 100644
+index 529fc172c6..1833c71ce9 100644
 --- a/block/meson.build
 +++ b/block/meson.build
-@@ -39,6 +39,7 @@ block_ss.add(files(
-   'throttle.c',
+@@ -40,6 +40,7 @@ block_ss.add(files(
    'throttle-groups.c',
+   'throttle.c',
    'write-threshold.c',
 +  'zeroinit.c',
  ), zstd, zlib, gnutls)
@@ -28,10 +26,10 @@ index e1f03fd773..b530e117b5 100644
  system_ss.add(when: 'CONFIG_TCG', if_true: files('blkreplay.c'))
 diff --git a/block/zeroinit.c b/block/zeroinit.c
 new file mode 100644
-index 0000000000..7998c9332d
+index 0000000000..1257342724
 --- /dev/null
 +++ b/block/zeroinit.c
-@@ -0,0 +1,207 @@
+@@ -0,0 +1,200 @@
 +/*
 + * Filter to fake a zero-initialized block device.
 + *
@@ -46,7 +44,6 @@ index 0000000000..7998c9332d
 +#include "qapi/error.h"
 +#include "block/block_int.h"
 +#include "block/block-io.h"
-+#include "block/graph-lock.h"
 +#include "qapi/qmp/qdict.h"
 +#include "qapi/qmp/qstring.h"
 +#include "qemu/cutils.h"
@@ -112,9 +109,12 @@ index 0000000000..7998c9332d
 +    }
 +
 +    /* Open the raw file */
-+    ret = bdrv_open_file_child(qemu_opt_get(opts, "x-next"), options, "next",
-+                               bs, &local_err);
-+    if (ret < 0) {
++    bs->file = bdrv_open_child(qemu_opt_get(opts, "x-next"), options, "next",
++                               bs, &child_of_bds,
++                               BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
++                               false, &local_err);
++    if (local_err) {
++        ret = -EINVAL;
 +        error_propagate(errp, local_err);
 +        goto fail;
 +    }
@@ -125,9 +125,7 @@ index 0000000000..7998c9332d
 +    ret = 0;
 +fail:
 +    if (ret < 0) {
-+        bdrv_graph_wrlock();
 +        bdrv_unref_child(bs, bs->file);
-+        bdrv_graph_wrunlock();
 +    }
 +    qemu_opts_del(opts);
 +    return ret;
@@ -139,22 +137,19 @@ index 0000000000..7998c9332d
 +    (void)s;
 +}
 +
-+static coroutine_fn int64_t GRAPH_RDLOCK
-+zeroinit_co_getlength(BlockDriverState *bs)
++static coroutine_fn int64_t zeroinit_co_getlength(BlockDriverState *bs)
 +{
 +    return bdrv_co_getlength(bs->file->bs);
 +}
 +
-+static int coroutine_fn GRAPH_RDLOCK
-+zeroinit_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes,
-+                   QEMUIOVector *qiov, BdrvRequestFlags flags)
++static int coroutine_fn zeroinit_co_preadv(BlockDriverState *bs,
++    int64_t offset, int64_t bytes, QEMUIOVector *qiov, BdrvRequestFlags flags)
 +{
 +    return bdrv_co_preadv(bs->file, offset, bytes, qiov, flags);
 +}
 +
-+static int coroutine_fn GRAPH_RDLOCK
-+zeroinit_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int64_t bytes,
-+                          BdrvRequestFlags flags)
++static int coroutine_fn zeroinit_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset,
++                                                 int64_t bytes, BdrvRequestFlags flags)
 +{
 +    BDRVZeroinitState *s = bs->opaque;
 +    if (offset >= s->extents)
@@ -162,9 +157,8 @@ index 0000000000..7998c9332d
 +    return bdrv_pwrite_zeroes(bs->file, offset, bytes, flags);
 +}
 +
-+static int coroutine_fn GRAPH_RDLOCK
-+zeroinit_co_pwritev(BlockDriverState *bs, int64_t offset, int64_t bytes,
-+                    QEMUIOVector *qiov, BdrvRequestFlags flags)
++static int coroutine_fn zeroinit_co_pwritev(BlockDriverState *bs,
++    int64_t offset, int64_t bytes, QEMUIOVector *qiov, BdrvRequestFlags flags)
 +{
 +    BDRVZeroinitState *s = bs->opaque;
 +    int64_t extents = offset + bytes;
@@ -173,35 +167,32 @@ index 0000000000..7998c9332d
 +    return bdrv_co_pwritev(bs->file, offset, bytes, qiov, flags);
 +}
 +
-+static coroutine_fn int GRAPH_RDLOCK
-+zeroinit_co_flush(BlockDriverState *bs)
++static coroutine_fn int zeroinit_co_flush(BlockDriverState *bs)
 +{
 +    return bdrv_co_flush(bs->file->bs);
 +}
 +
-+static int GRAPH_RDLOCK
-+zeroinit_has_zero_init(BlockDriverState *bs)
++static int zeroinit_has_zero_init(BlockDriverState *bs)
 +{
 +    BDRVZeroinitState *s = bs->opaque;
 +    return s->has_zero_init;
 +}
 +
-+static int coroutine_fn GRAPH_RDLOCK
-+zeroinit_co_pdiscard(BlockDriverState *bs, int64_t offset, int64_t bytes)
++static int coroutine_fn zeroinit_co_pdiscard(BlockDriverState *bs,
++                                             int64_t offset, int64_t bytes)
 +{
 +    return bdrv_co_pdiscard(bs->file, offset, bytes);
 +}
 +
-+static int GRAPH_RDLOCK
-+zeroinit_co_truncate(BlockDriverState *bs, int64_t offset, _Bool exact,
-+                     PreallocMode prealloc, BdrvRequestFlags req_flags,
-+                     Error **errp)
++static int zeroinit_co_truncate(BlockDriverState *bs, int64_t offset,
++                                _Bool exact, PreallocMode prealloc,
++                                BdrvRequestFlags req_flags, Error **errp)
 +{
 +    return bdrv_co_truncate(bs->file, offset, exact, prealloc, req_flags, errp);
 +}
 +
-+static coroutine_fn int GRAPH_RDLOCK
-+zeroinit_co_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
++static coroutine_fn int zeroinit_co_get_info(BlockDriverState *bs,
++                                             BlockDriverInfo *bdi)
 +{
 +    return bdrv_co_get_info(bs->file->bs, bdi);
 +}

debian/patches/pve/0020-PVE-Add-dummy-id-command-line-parameter.patch

@@ -10,14 +10,14 @@ Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
 Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 ---
  qemu-options.hx | 3 +++
- system/vl.c     | 8 ++++++++
+ softmmu/vl.c    | 8 ++++++++
  2 files changed, 11 insertions(+)
 
 diff --git a/qemu-options.hx b/qemu-options.hx
-index 511ab9415e..92e301d545 100644
+index dc1ececc9c..848d2dfdd1 100644
 --- a/qemu-options.hx
 +++ b/qemu-options.hx
-@@ -1237,6 +1237,9 @@ legacy PC, they are not recommended for modern configurations.
+@@ -1197,6 +1197,9 @@ legacy PC, they are not recommended for modern configurations.
  
  ERST
  
@@ -27,11 +27,11 @@ index 511ab9415e..92e301d545 100644
  DEF("fda", HAS_ARG, QEMU_OPTION_fda,
      "-fda/-fdb file  use 'file' as floppy disk 0/1 image\n", QEMU_ARCH_ALL)
  DEF("fdb", HAS_ARG, QEMU_OPTION_fdb, "", QEMU_ARCH_ALL)
-diff --git a/system/vl.c b/system/vl.c
-index 2738ab7c91..20ebf2c920 100644
---- a/system/vl.c
-+++ b/system/vl.c
-@@ -2748,6 +2748,7 @@ void qemu_init(int argc, char **argv)
+diff --git a/softmmu/vl.c b/softmmu/vl.c
+index 3f2681aded..1a3b9cc4b8 100644
+--- a/softmmu/vl.c
++++ b/softmmu/vl.c
+@@ -2683,6 +2683,7 @@ void qemu_init(int argc, char **argv)
      MachineClass *machine_class;
      bool userconfig = true;
      FILE *vmstate_dump_file = NULL;
@@ -39,7 +39,7 @@ index 2738ab7c91..20ebf2c920 100644
  
      qemu_add_opts(&qemu_drive_opts);
      qemu_add_drive_opts(&qemu_legacy_drive_opts);
-@@ -3371,6 +3372,13 @@ void qemu_init(int argc, char **argv)
+@@ -3306,6 +3307,13 @@ void qemu_init(int argc, char **argv)
                  machine_parse_property_opt(qemu_find_opts("smp-opts"),
                                             "smp", optarg);
                  break;
@@ -50,6 +50,6 @@ index 2738ab7c91..20ebf2c920 100644
 +                    exit(1);
 +                }
 +                break;
- #ifdef CONFIG_VNC
              case QEMU_OPTION_vnc:
                  vnc_parse(optarg);
+                 break;

debian/patches/pve/0021-PVE-Config-Revert-target-i386-disable-LINT0-after-re.patch

@@ -11,10 +11,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 9 insertions(+)
 
 diff --git a/hw/intc/apic_common.c b/hw/intc/apic_common.c
-index d8fc1e2815..789694b8b3 100644
+index 4a34f03047..59b917e50c 100644
 --- a/hw/intc/apic_common.c
 +++ b/hw/intc/apic_common.c
-@@ -263,6 +263,15 @@ static void apic_reset_common(DeviceState *dev)
+@@ -252,6 +252,15 @@ static void apic_reset_common(DeviceState *dev)
      info->vapic_base_update(s);
  
      apic_init_reset(dev);

debian/patches/pve/0022-PVE-Up-Config-file-posix-make-locking-optiono-on-cre.patch

@@ -9,14 +9,14 @@ Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
 Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 ---
  block/file-posix.c   | 59 ++++++++++++++++++++++++++++++--------------
- qapi/block-core.json |  7 +++++-
- 2 files changed, 46 insertions(+), 20 deletions(-)
+ qapi/block-core.json |  3 ++-
+ 2 files changed, 42 insertions(+), 20 deletions(-)
 
 diff --git a/block/file-posix.c b/block/file-posix.c
-index 43bc0bd520..60e98c87f1 100644
+index ca551baa42..8b3b83e9d4 100644
 --- a/block/file-posix.c
 +++ b/block/file-posix.c
-@@ -2876,6 +2876,7 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp)
+@@ -2873,6 +2873,7 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp)
      int fd;
      uint64_t perm, shared;
      int result = 0;
@@ -24,7 +24,7 @@ index 43bc0bd520..60e98c87f1 100644
  
      /* Validate options and set default values */
      assert(options->driver == BLOCKDEV_DRIVER_FILE);
-@@ -2916,19 +2917,22 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp)
+@@ -2913,19 +2914,22 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp)
      perm = BLK_PERM_WRITE | BLK_PERM_RESIZE;
      shared = BLK_PERM_ALL & ~BLK_PERM_RESIZE;
  
@@ -59,7 +59,7 @@ index 43bc0bd520..60e98c87f1 100644
      }
  
      /* Clear the file by truncating it to 0 */
-@@ -2982,13 +2986,15 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp)
+@@ -2979,13 +2983,15 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp)
      }
  
  out_unlock:
@@ -82,7 +82,7 @@ index 43bc0bd520..60e98c87f1 100644
      }
  
  out_close:
-@@ -3012,6 +3018,7 @@ raw_co_create_opts(BlockDriver *drv, const char *filename,
+@@ -3009,6 +3015,7 @@ raw_co_create_opts(BlockDriver *drv, const char *filename,
      PreallocMode prealloc;
      char *buf = NULL;
      Error *local_err = NULL;
@@ -90,7 +90,7 @@ index 43bc0bd520..60e98c87f1 100644
  
      /* Skip file: protocol prefix */
      strstart(filename, "file:", &filename);
-@@ -3034,6 +3041,18 @@ raw_co_create_opts(BlockDriver *drv, const char *filename,
+@@ -3031,6 +3038,18 @@ raw_co_create_opts(BlockDriver *drv, const char *filename,
          return -EINVAL;
      }
  
@@ -109,7 +109,7 @@ index 43bc0bd520..60e98c87f1 100644
      options = (BlockdevCreateOptions) {
          .driver     = BLOCKDEV_DRIVER_FILE,
          .u.file     = {
-@@ -3045,6 +3064,8 @@ raw_co_create_opts(BlockDriver *drv, const char *filename,
+@@ -3042,6 +3061,8 @@ raw_co_create_opts(BlockDriver *drv, const char *filename,
              .nocow              = nocow,
              .has_extent_size_hint = has_extent_size_hint,
              .extent_size_hint   = extent_size_hint,
@@ -119,21 +119,10 @@ index 43bc0bd520..60e98c87f1 100644
      };
      return raw_co_create(&options, errp);
 diff --git a/qapi/block-core.json b/qapi/block-core.json
-index 905da8be72..3db587a6e4 100644
+index a5cea82139..bb471c078d 100644
 --- a/qapi/block-core.json
 +++ b/qapi/block-core.json
-@@ -4956,6 +4956,10 @@
- # @extent-size-hint: Extent size hint to add to the image file; 0 for
- #     not adding an extent size hint (default: 1 MB, since 5.1)
- #
-+# @locking: whether to enable file locking.  If set to 'auto', only
-+#     enable when Open File Descriptor (OFD) locking API is available
-+#     (default: auto).
-+#
- # Since: 2.12
- ##
- { 'struct': 'BlockdevCreateOptionsFile',
-@@ -4963,7 +4967,8 @@
+@@ -4880,7 +4880,8 @@
              'size':                 'size',
              '*preallocation':       'PreallocMode',
              '*nocow':               'bool',

debian/patches/pve/0024-PVE-Compat-4.0-used-balloon-qemu-4-0-config-size-fal.patch

@@ -26,10 +26,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 2 insertions(+), 1 deletion(-)
 
 diff --git a/hw/core/machine.c b/hw/core/machine.c
-index 4273de16a0..83f1fc0293 100644
+index f0d35c6401..1427983543 100644
 --- a/hw/core/machine.c
 +++ b/hw/core/machine.c
-@@ -162,7 +162,8 @@ GlobalProperty hw_compat_4_0[] = {
+@@ -148,7 +148,8 @@ GlobalProperty hw_compat_4_0[] = {
      { "virtio-vga",     "edid", "false" },
      { "virtio-gpu-device", "edid", "false" },
      { "virtio-device", "use-started", "false" },

debian/patches/pve/0025-PVE-Allow-version-code-in-machine-type.patch

@@ -17,14 +17,14 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  hw/core/machine-qmp-cmds.c |  5 +++++
  include/hw/boards.h        |  2 ++
  qapi/machine.json          |  4 +++-
- system/vl.c                | 25 +++++++++++++++++++++++++
+ softmmu/vl.c               | 25 +++++++++++++++++++++++++
  4 files changed, 35 insertions(+), 1 deletion(-)
 
 diff --git a/hw/core/machine-qmp-cmds.c b/hw/core/machine-qmp-cmds.c
-index 314351cdff..628a3537c5 100644
+index 40821e2317..ee93ddd69a 100644
 --- a/hw/core/machine-qmp-cmds.c
 +++ b/hw/core/machine-qmp-cmds.c
-@@ -94,6 +94,11 @@ MachineInfoList *qmp_query_machines(Error **errp)
+@@ -95,6 +95,11 @@ MachineInfoList *qmp_query_machines(Error **errp)
          if (strcmp(mc->name, MACHINE_GET_CLASS(current_machine)->name) == 0) {
              info->has_is_current = true;
              info->is_current = true;
@@ -37,10 +37,10 @@ index 314351cdff..628a3537c5 100644
  
          if (mc->default_cpu_type) {
 diff --git a/include/hw/boards.h b/include/hw/boards.h
-index 8b8f6d5c00..dd6d0a1447 100644
+index ed83360198..f8b88cd86a 100644
 --- a/include/hw/boards.h
 +++ b/include/hw/boards.h
-@@ -246,6 +246,8 @@ struct MachineClass {
+@@ -235,6 +235,8 @@ struct MachineClass {
      const char *desc;
      const char *deprecation_reason;
  
@@ -50,10 +50,10 @@ index 8b8f6d5c00..dd6d0a1447 100644
      void (*reset)(MachineState *state, ShutdownCause reason);
      void (*wakeup)(MachineState *state);
 diff --git a/qapi/machine.json b/qapi/machine.json
-index a024d5b05d..1d69bffaa0 100644
+index fbb61f18e4..7da3c519ba 100644
 --- a/qapi/machine.json
 +++ b/qapi/machine.json
-@@ -168,6 +168,8 @@
+@@ -161,6 +161,8 @@
  #
  # @acpi: machine type supports ACPI (since 8.0)
  #
@@ -62,7 +62,7 @@ index a024d5b05d..1d69bffaa0 100644
  # Since: 1.2
  ##
  { 'struct': 'MachineInfo',
-@@ -175,7 +177,7 @@
+@@ -168,7 +170,7 @@
              '*is-default': 'bool', '*is-current': 'bool', 'cpu-max': 'int',
              'hotpluggable-cpus': 'bool',  'numa-mem-supported': 'bool',
              'deprecated': 'bool', '*default-cpu-type': 'str',
@@ -71,19 +71,19 @@ index a024d5b05d..1d69bffaa0 100644
  
  ##
  # @query-machines:
-diff --git a/system/vl.c b/system/vl.c
-index 20ebf2c920..4d39e32097 100644
---- a/system/vl.c
-+++ b/system/vl.c
-@@ -1659,6 +1659,7 @@ static const QEMUOption *lookup_opt(int argc, char **argv,
+diff --git a/softmmu/vl.c b/softmmu/vl.c
+index 1a3b9cc4b8..e9b5f62cc3 100644
+--- a/softmmu/vl.c
++++ b/softmmu/vl.c
+@@ -1597,6 +1597,7 @@ static const QEMUOption *lookup_opt(int argc, char **argv,
  static MachineClass *select_machine(QDict *qdict, Error **errp)
  {
-     const char *machine_type = qdict_get_try_str(qdict, "type");
+     const char *optarg = qdict_get_try_str(qdict, "type");
 +    const char *pvever = qdict_get_try_str(qdict, "pvever");
      GSList *machines = object_class_get_list(TYPE_MACHINE, false);
      MachineClass *machine_class;
      Error *local_err = NULL;
-@@ -1676,6 +1677,11 @@ static MachineClass *select_machine(QDict *qdict, Error **errp)
+@@ -1614,6 +1615,11 @@ static MachineClass *select_machine(QDict *qdict, Error **errp)
          }
      }
  
@@ -95,7 +95,7 @@ index 20ebf2c920..4d39e32097 100644
      g_slist_free(machines);
      if (local_err) {
          error_append_hint(&local_err, "Use -machine help to list supported machines\n");
-@@ -3313,12 +3319,31 @@ void qemu_init(int argc, char **argv)
+@@ -3248,12 +3254,31 @@ void qemu_init(int argc, char **argv)
              case QEMU_OPTION_machine:
                  {
                      bool help;

debian/patches/pve/0026-block-backup-move-bcs-bitmap-initialization-to-job-c.patch

@@ -25,7 +25,7 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 4 insertions(+), 4 deletions(-)
 
 diff --git a/block/backup.c b/block/backup.c
-index 3dd2e229d2..eba5b11493 100644
+index db3791f4d1..39410dcf8d 100644
 --- a/block/backup.c
 +++ b/block/backup.c
 @@ -237,8 +237,8 @@ static void backup_init_bcs_bitmap(BackupBlockJob *job)
@@ -48,9 +48,9 @@ index 3dd2e229d2..eba5b11493 100644
      if (s->sync_mode == MIRROR_SYNC_MODE_TOP) {
          int64_t offset = 0;
          int64_t count;
-@@ -502,6 +500,8 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
+@@ -495,6 +493,8 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
+     block_job_add_bdrv(&job->common, "target", target, 0, BLK_PERM_ALL,
                         &error_abort);
-     bdrv_graph_wrunlock();
  
 +    backup_init_bcs_bitmap(job);
 +

debian/patches/pve/0027-PVE-Backup-add-vma-backup-format-code.patch

@@ -15,21 +15,21 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
  block/meson.build |   2 +
  meson.build       |   5 +
- vma-reader.c      | 870 ++++++++++++++++++++++++++++++++++++++++++++
- vma-writer.c      | 817 +++++++++++++++++++++++++++++++++++++++++
- vma.c             | 901 ++++++++++++++++++++++++++++++++++++++++++++++
+ vma-reader.c      | 867 ++++++++++++++++++++++++++++++++++++++++++++
+ vma-writer.c      | 818 +++++++++++++++++++++++++++++++++++++++++
+ vma.c             | 900 ++++++++++++++++++++++++++++++++++++++++++++++
  vma.h             | 150 ++++++++
- 6 files changed, 2745 insertions(+)
+ 6 files changed, 2742 insertions(+)
  create mode 100644 vma-reader.c
  create mode 100644 vma-writer.c
  create mode 100644 vma.c
  create mode 100644 vma.h
 
 diff --git a/block/meson.build b/block/meson.build
-index b530e117b5..b245daa98e 100644
+index 1833c71ce9..59b71ba9f3 100644
 --- a/block/meson.build
 +++ b/block/meson.build
-@@ -42,6 +42,8 @@ block_ss.add(files(
+@@ -43,6 +43,8 @@ block_ss.add(files(
    'zeroinit.c',
  ), zstd, zlib, gnutls)
  
@@ -39,10 +39,10 @@ index b530e117b5..b245daa98e 100644
  system_ss.add(files('block-ram-registrar.c'))
  
 diff --git a/meson.build b/meson.build
-index 91a0aa64c6..620cc594b2 100644
+index a9c4f28247..cd95530d3b 100644
 --- a/meson.build
 +++ b/meson.build
-@@ -1922,6 +1922,8 @@ endif
+@@ -1778,6 +1778,8 @@ endif
  
  has_gettid = cc.has_function('gettid')
  
@@ -51,7 +51,7 @@ index 91a0aa64c6..620cc594b2 100644
  # libselinux
  selinux = dependency('libselinux',
                       required: get_option('selinux'),
-@@ -4023,6 +4025,9 @@ if have_tools
+@@ -3908,6 +3910,9 @@ if have_tools
                 dependencies: [blockdev, qemuutil, gnutls, selinux],
                 install: true)
  
@@ -59,14 +59,14 @@ index 91a0aa64c6..620cc594b2 100644
 +                   dependencies: [authz, block, crypto, io, qom], install: true)
 +
    subdir('storage-daemon')
- 
-   foreach exe: [ 'qemu-img', 'qemu-io', 'qemu-nbd', 'qemu-storage-daemon']
+   subdir('contrib/rdmacm-mux')
+   subdir('contrib/elf2dmp')
 diff --git a/vma-reader.c b/vma-reader.c
 new file mode 100644
-index 0000000000..d0b6721812
+index 0000000000..81a891c6b1
 --- /dev/null
 +++ b/vma-reader.c
-@@ -0,0 +1,870 @@
+@@ -0,0 +1,867 @@
 +/*
 + * VMA: Virtual Machine Archive
 + *
@@ -88,7 +88,6 @@ index 0000000000..d0b6721812
 +#include "qemu/ratelimit.h"
 +#include "vma.h"
 +#include "block/block.h"
-+#include "block/graph-lock.h"
 +#include "sysemu/block-backend.h"
 +
 +static unsigned char zero_vma_block[VMA_BLOCK_SIZE];
@@ -601,10 +600,8 @@ index 0000000000..d0b6721812
 +    } else {
 +        int res = blk_pwrite(target, sector_num * BDRV_SECTOR_SIZE, nb_sectors * BDRV_SECTOR_SIZE, buf, 0);
 +        if (res < 0) {
-+            bdrv_graph_rdlock_main_loop();
 +            error_setg(errp, "blk_pwrite to %s failed (%d)",
 +                       bdrv_get_device_name(blk_bs(target)), res);
-+            bdrv_graph_rdunlock_main_loop();
 +            return -1;
 +        }
 +    }
@@ -939,10 +936,10 @@ index 0000000000..d0b6721812
 +
 diff --git a/vma-writer.c b/vma-writer.c
 new file mode 100644
-index 0000000000..a466652a5d
+index 0000000000..126b296647
 --- /dev/null
 +++ b/vma-writer.c
-@@ -0,0 +1,817 @@
+@@ -0,0 +1,818 @@
 +/*
 + * VMA: Virtual Machine Archive
 + *
@@ -1517,16 +1514,17 @@ index 0000000000..a466652a5d
 +    int i;
 +
 +    g_assert(vmaw != NULL);
-+    g_assert(status != NULL);
 +
-+    status->status = vmaw->status;
-+    g_strlcpy(status->errmsg, vmaw->errmsg, sizeof(status->errmsg));
-+    for (i = 0; i <= 255; i++) {
-+        status->stream_info[i] = vmaw->stream_info[i];
++    if (status) {
++        status->status = vmaw->status;
++        g_strlcpy(status->errmsg, vmaw->errmsg, sizeof(status->errmsg));
++        for (i = 0; i <= 255; i++) {
++            status->stream_info[i] = vmaw->stream_info[i];
++        }
++
++        uuid_unparse_lower(vmaw->uuid, status->uuid_str);
 +    }
 +
-+    uuid_unparse_lower(vmaw->uuid, status->uuid_str);
-+
 +    status->closed = vmaw->closed;
 +
 +    return vmaw->status;
@@ -1762,10 +1760,10 @@ index 0000000000..a466652a5d
 +}
 diff --git a/vma.c b/vma.c
 new file mode 100644
-index 0000000000..bb715e9061
+index 0000000000..347f6283ca
 --- /dev/null
 +++ b/vma.c
-@@ -0,0 +1,901 @@
+@@ -0,0 +1,900 @@
 +/*
 + * VMA: Virtual Machine Archive
 + *
@@ -2078,17 +2076,17 @@ index 0000000000..bb715e9061
 +                        inbuf);
 +            }
 +
-+            RestoreMap *restore_map = g_new0(RestoreMap, 1);
-+            restore_map->devname = g_strdup(devname);
-+            restore_map->path = g_strdup(path);
-+            restore_map->format = format;
-+            restore_map->throttling_bps = bps_value;
-+            restore_map->throttling_group = group;
-+            restore_map->cache = cache;
-+            restore_map->write_zero = write_zero;
-+            restore_map->skip = skip;
++            RestoreMap *map = g_new0(RestoreMap, 1);
++            map->devname = g_strdup(devname);
++            map->path = g_strdup(path);
++            map->format = format;
++            map->throttling_bps = bps_value;
++            map->throttling_group = group;
++            map->cache = cache;
++            map->write_zero = write_zero;
++            map->skip = skip;
 +
-+            g_hash_table_insert(devmap, restore_map->devname, restore_map);
++            g_hash_table_insert(devmap, map->devname, map);
 +
 +        };
 +    }
@@ -2387,7 +2385,7 @@ index 0000000000..bb715e9061
 +
 +static int create_archive(int argc, char **argv)
 +{
-+    int c;
++    int i, c;
 +    int verbose = 0;
 +    const char *archivename;
 +    GList *backup_coroutines = NULL;
@@ -2545,7 +2543,6 @@ index 0000000000..bb715e9061
 +    vma_writer_get_status(vmaw, &vmastat);
 +
 +    if (verbose) {
-+        int i;
 +        for (i = 0; i < 256; i++) {
 +            VmaStreamInfo *si = &vmastat.stream_info[i];
 +            if (si->size) {

debian/patches/pve/0028-PVE-Backup-add-backup-dump-block-driver.patch

@@ -12,20 +12,20 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 [FE: adapt to coroutine changes]
 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
- block/backup-dump.c              | 172 +++++++++++++++++++++++++++++++
+ block/backup-dump.c              | 168 +++++++++++++++++++++++++++++++
  block/backup.c                   |  30 ++----
  block/meson.build                |   1 +
  include/block/block_int-common.h |  35 +++++++
  job.c                            |   3 +-
- 5 files changed, 218 insertions(+), 23 deletions(-)
+ 5 files changed, 214 insertions(+), 23 deletions(-)
  create mode 100644 block/backup-dump.c
 
 diff --git a/block/backup-dump.c b/block/backup-dump.c
 new file mode 100644
-index 0000000000..e46abf1070
+index 0000000000..232a094426
 --- /dev/null
 +++ b/block/backup-dump.c
-@@ -0,0 +1,172 @@
+@@ -0,0 +1,168 @@
 +/*
 + * BlockDriver to send backup data stream to a callback function
 + *
@@ -37,8 +37,6 @@ index 0000000000..e46abf1070
 + */
 +
 +#include "qemu/osdep.h"
-+
-+#include "qapi/qmp/qdict.h"
 +#include "qom/object_interfaces.h"
 +#include "block/block_int.h"
 +
@@ -171,7 +169,7 @@ index 0000000000..e46abf1070
 +block_init(bdrv_backup_dump_init);
 +
 +
-+BlockDriverState *coroutine_fn bdrv_co_backup_dump_create(
++BlockDriverState *bdrv_backup_dump_create(
 +    int dump_cb_block_size,
 +    uint64_t byte_size,
 +    BackupDumpFunc *dump_cb,
@@ -179,11 +177,9 @@ index 0000000000..e46abf1070
 +    Error **errp)
 +{
 +    BDRVBackupDumpState *state;
++    BlockDriverState *bs = bdrv_new_open_driver(
++        &bdrv_backup_dump_drive, NULL, BDRV_O_RDWR, errp);
 +
-+    QDict *options = qdict_new();
-+    qdict_put_str(options, "driver", "backup-dump-drive");
-+
-+    BlockDriverState *bs = bdrv_co_open(NULL, NULL, options, BDRV_O_RDWR, errp);
 +    if (!bs) {
 +        return NULL;
 +    }
@@ -199,7 +195,7 @@ index 0000000000..e46abf1070
 +    return bs;
 +}
 diff --git a/block/backup.c b/block/backup.c
-index eba5b11493..1963e47ab9 100644
+index 39410dcf8d..af87fa6aa9 100644
 --- a/block/backup.c
 +++ b/block/backup.c
 @@ -29,28 +29,6 @@
@@ -231,7 +227,7 @@ index eba5b11493..1963e47ab9 100644
  static const BlockJobDriver backup_job_driver;
  
  static void backup_cleanup_sync_bitmap(BackupBlockJob *job, int ret)
-@@ -462,6 +440,14 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
+@@ -457,6 +435,14 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
      }
  
      cluster_size = block_copy_cluster_size(bcs);
@@ -247,7 +243,7 @@ index eba5b11493..1963e47ab9 100644
      if (perf->max_chunk && perf->max_chunk < cluster_size) {
          error_setg(errp, "Required max-chunk (%" PRIi64 ") is less than backup "
 diff --git a/block/meson.build b/block/meson.build
-index b245daa98e..e99914eaa4 100644
+index 59b71ba9f3..6fde9f7dcd 100644
 --- a/block/meson.build
 +++ b/block/meson.build
 @@ -4,6 +4,7 @@ block_ss.add(files(
@@ -255,11 +251,11 @@ index b245daa98e..e99914eaa4 100644
    'amend.c',
    'backup.c',
 +  'backup-dump.c',
+   'copy-before-write.c',
    'blkdebug.c',
    'blklogwrites.c',
-   'blkverify.c',
 diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h
-index 761276127e..b3e6697613 100644
+index 74195c3004..0f2e1817ad 100644
 --- a/include/block/block_int-common.h
 +++ b/include/block/block_int-common.h
 @@ -26,6 +26,7 @@
@@ -276,7 +272,7 @@ index 761276127e..b3e6697613 100644
  
 +typedef int BackupDumpFunc(void *opaque, uint64_t offset, uint64_t bytes, const void *buf);
 +
-+BlockDriverState *coroutine_fn bdrv_co_backup_dump_create(
++BlockDriverState *bdrv_backup_dump_create(
 +    int dump_cb_block_size,
 +    uint64_t byte_size,
 +    BackupDumpFunc *dump_cb,
@@ -312,10 +308,10 @@ index 761276127e..b3e6697613 100644
      BDRV_TRACKED_READ,
      BDRV_TRACKED_WRITE,
 diff --git a/job.c b/job.c
-index 660ce22c56..baf54c8d60 100644
+index 72d57f0934..93e22d180b 100644
 --- a/job.c
 +++ b/job.c
-@@ -331,7 +331,8 @@ static bool job_started_locked(Job *job)
+@@ -330,7 +330,8 @@ static bool job_started_locked(Job *job)
  }
  
  /* Called with job_mutex held. */

debian/patches/pve/0029-PVE-Add-sequential-job-transaction-support.patch

@@ -11,10 +11,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  2 files changed, 46 insertions(+)
 
 diff --git a/include/qemu/job.h b/include/qemu/job.h
-index 2b873f2576..528cd6acb9 100644
+index e502787dd8..963cf2bef5 100644
 --- a/include/qemu/job.h
 +++ b/include/qemu/job.h
-@@ -362,6 +362,18 @@ void job_unlock(void);
+@@ -381,6 +381,18 @@ void job_unlock(void);
   */
  JobTxn *job_txn_new(void);
  
@@ -34,10 +34,10 @@ index 2b873f2576..528cd6acb9 100644
   * Release a reference that was previously acquired with job_txn_add_job or
   * job_txn_new. If it's the last reference to the object, it will be freed.
 diff --git a/job.c b/job.c
-index baf54c8d60..3ac5e5cde2 100644
+index 93e22d180b..2b31f1e14f 100644
 --- a/job.c
 +++ b/job.c
-@@ -94,6 +94,8 @@ struct JobTxn {
+@@ -93,6 +93,8 @@ struct JobTxn {
  
      /* Reference count */
      int refcnt;
@@ -46,7 +46,7 @@ index baf54c8d60..3ac5e5cde2 100644
  };
  
  void job_lock(void)
-@@ -119,6 +121,25 @@ JobTxn *job_txn_new(void)
+@@ -118,6 +120,25 @@ JobTxn *job_txn_new(void)
      return txn;
  }
  
@@ -72,7 +72,7 @@ index baf54c8d60..3ac5e5cde2 100644
  /* Called with job_mutex held. */
  static void job_txn_ref_locked(JobTxn *txn)
  {
-@@ -1042,6 +1063,12 @@ static void job_completed_txn_success_locked(Job *job)
+@@ -1057,6 +1078,12 @@ static void job_completed_txn_success_locked(Job *job)
       */
      QLIST_FOREACH(other_job, &txn->jobs, txn_list) {
          if (!job_is_completed_locked(other_job)) {
@@ -85,7 +85,7 @@ index baf54c8d60..3ac5e5cde2 100644
              return;
          }
          assert(other_job->ret == 0);
-@@ -1253,6 +1280,13 @@ int job_finish_sync_locked(Job *job,
+@@ -1268,6 +1295,13 @@ int job_finish_sync_locked(Job *job,
          return -EBUSY;
      }
  

debian/patches/pve/0030-PVE-Backup-Proxmox-backup-patches-for-QEMU.patch

@@ -84,30 +84,68 @@ Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
      create jobs in a drained section]
 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
- block/meson.build              |    5 +
- block/monitor/block-hmp-cmds.c |   39 ++
- blockdev.c                     |    1 +
- hmp-commands-info.hx           |   14 +
- hmp-commands.hx                |   29 +
- include/monitor/hmp.h          |    3 +
- meson.build                    |    1 +
- monitor/hmp-cmds.c             |   72 +++
- proxmox-backup-client.c        |  146 +++++
- proxmox-backup-client.h        |   60 ++
- pve-backup.c                   | 1092 ++++++++++++++++++++++++++++++++
- qapi/block-core.json           |  233 +++++++
- qapi/common.json               |   14 +
- qapi/machine.json              |   16 +-
- 14 files changed, 1711 insertions(+), 14 deletions(-)
+ block/backup-dump.c              |   10 +-
+ block/meson.build                |    5 +
+ block/monitor/block-hmp-cmds.c   |   39 ++
+ blockdev.c                       |    1 +
+ hmp-commands-info.hx             |   14 +
+ hmp-commands.hx                  |   29 +
+ include/block/block_int-common.h |    2 +-
+ include/monitor/hmp.h            |    3 +
+ meson.build                      |    1 +
+ monitor/hmp-cmds.c               |   72 ++
+ proxmox-backup-client.c          |  146 ++++
+ proxmox-backup-client.h          |   60 ++
+ pve-backup.c                     | 1067 ++++++++++++++++++++++++++++++
+ qapi/block-core.json             |  229 +++++++
+ qapi/common.json                 |   14 +
+ qapi/machine.json                |   16 +-
+ 16 files changed, 1690 insertions(+), 18 deletions(-)
  create mode 100644 proxmox-backup-client.c
  create mode 100644 proxmox-backup-client.h
  create mode 100644 pve-backup.c
 
+diff --git a/block/backup-dump.c b/block/backup-dump.c
+index 232a094426..e46abf1070 100644
+--- a/block/backup-dump.c
++++ b/block/backup-dump.c
+@@ -9,6 +9,8 @@
+  */
+ 
+ #include "qemu/osdep.h"
++
++#include "qapi/qmp/qdict.h"
+ #include "qom/object_interfaces.h"
+ #include "block/block_int.h"
+ 
+@@ -141,7 +143,7 @@ static void bdrv_backup_dump_init(void)
+ block_init(bdrv_backup_dump_init);
+ 
+ 
+-BlockDriverState *bdrv_backup_dump_create(
++BlockDriverState *coroutine_fn bdrv_co_backup_dump_create(
+     int dump_cb_block_size,
+     uint64_t byte_size,
+     BackupDumpFunc *dump_cb,
+@@ -149,9 +151,11 @@ BlockDriverState *bdrv_backup_dump_create(
+     Error **errp)
+ {
+     BDRVBackupDumpState *state;
+-    BlockDriverState *bs = bdrv_new_open_driver(
+-        &bdrv_backup_dump_drive, NULL, BDRV_O_RDWR, errp);
+ 
++    QDict *options = qdict_new();
++    qdict_put_str(options, "driver", "backup-dump-drive");
++
++    BlockDriverState *bs = bdrv_co_open(NULL, NULL, options, BDRV_O_RDWR, errp);
+     if (!bs) {
+         return NULL;
+     }
 diff --git a/block/meson.build b/block/meson.build
-index e99914eaa4..6bba803f94 100644
+index 6fde9f7dcd..6d468f89e5 100644
 --- a/block/meson.build
 +++ b/block/meson.build
-@@ -44,6 +44,11 @@ block_ss.add(files(
+@@ -45,6 +45,11 @@ block_ss.add(files(
  ), zstd, zlib, gnutls)
  
  block_ss.add(files('../vma-writer.c'), libuuid)
@@ -120,10 +158,10 @@ index e99914eaa4..6bba803f94 100644
  system_ss.add(when: 'CONFIG_TCG', if_true: files('blkreplay.c'))
  system_ss.add(files('block-ram-registrar.c'))
 diff --git a/block/monitor/block-hmp-cmds.c b/block/monitor/block-hmp-cmds.c
-index bdf2eb50b6..439a7a14c8 100644
+index ca2599de44..6efe28cef5 100644
 --- a/block/monitor/block-hmp-cmds.c
 +++ b/block/monitor/block-hmp-cmds.c
-@@ -1009,3 +1009,42 @@ void hmp_change_medium(Monitor *mon, const char *device, const char *target,
+@@ -1029,3 +1029,42 @@ void hmp_change_medium(Monitor *mon, const char *device, const char *target,
      qmp_blockdev_change_medium(device, NULL, target, arg, true, force,
                                 !!read_only, read_only_mode, errp);
  }
@@ -167,7 +205,7 @@ index bdf2eb50b6..439a7a14c8 100644
 +    hmp_handle_error(mon, error);
 +}
 diff --git a/blockdev.c b/blockdev.c
-index ed8198f351..1054a69279 100644
+index cd5f205ad1..7793143d76 100644
 --- a/blockdev.c
 +++ b/blockdev.c
 @@ -37,6 +37,7 @@
@@ -179,7 +217,7 @@ index ed8198f351..1054a69279 100644
  #include "monitor/monitor.h"
  #include "qemu/error-report.h"
 diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
-index d5ab880492..6c97248d1b 100644
+index 10fdd822e0..15937793c1 100644
 --- a/hmp-commands-info.hx
 +++ b/hmp-commands-info.hx
 @@ -471,6 +471,20 @@ SRST
@@ -204,7 +242,7 @@ index d5ab880492..6c97248d1b 100644
      {
          .name       = "usernet",
 diff --git a/hmp-commands.hx b/hmp-commands.hx
-index 7506de251c..d5f9c28194 100644
+index e352f86872..0c8b6725fb 100644
 --- a/hmp-commands.hx
 +++ b/hmp-commands.hx
 @@ -101,6 +101,35 @@ ERST
@@ -243,6 +281,19 @@ index 7506de251c..d5f9c28194 100644
  ERST
  
      {
+diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h
+index 0f2e1817ad..0a0339eee4 100644
+--- a/include/block/block_int-common.h
++++ b/include/block/block_int-common.h
+@@ -63,7 +63,7 @@
+ 
+ typedef int BackupDumpFunc(void *opaque, uint64_t offset, uint64_t bytes, const void *buf);
+ 
+-BlockDriverState *bdrv_backup_dump_create(
++BlockDriverState *coroutine_fn bdrv_co_backup_dump_create(
+     int dump_cb_block_size,
+     uint64_t byte_size,
+     BackupDumpFunc *dump_cb,
 diff --git a/include/monitor/hmp.h b/include/monitor/hmp.h
 index 7a7def7530..cba7afe70c 100644
 --- a/include/monitor/hmp.h
@@ -265,10 +316,10 @@ index 7a7def7530..cba7afe70c 100644
  void hmp_device_add(Monitor *mon, const QDict *qdict);
  void hmp_device_del(Monitor *mon, const QDict *qdict);
 diff --git a/meson.build b/meson.build
-index 620cc594b2..d16b97cf3c 100644
+index cd95530d3b..d53976d621 100644
 --- a/meson.build
 +++ b/meson.build
-@@ -1923,6 +1923,7 @@ endif
+@@ -1779,6 +1779,7 @@ endif
  has_gettid = cc.has_function('gettid')
  
  libuuid = cc.find_library('uuid', required: true)
@@ -277,7 +328,7 @@ index 620cc594b2..d16b97cf3c 100644
  # libselinux
  selinux = dependency('libselinux',
 diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
-index ef4634e5c1..6e25279f42 100644
+index 91be698308..5b9c231a4c 100644
 --- a/monitor/hmp-cmds.c
 +++ b/monitor/hmp-cmds.c
 @@ -21,6 +21,7 @@
@@ -586,10 +637,10 @@ index 0000000000..8cbf645b2c
 +#endif /* PROXMOX_BACKUP_CLIENT_H */
 diff --git a/pve-backup.c b/pve-backup.c
 new file mode 100644
-index 0000000000..c755bf302b
+index 0000000000..d84d807654
 --- /dev/null
 +++ b/pve-backup.c
-@@ -0,0 +1,1092 @@
+@@ -0,0 +1,1067 @@
 +#include "proxmox-backup-client.h"
 +#include "vma.h"
 +
@@ -600,7 +651,6 @@ index 0000000000..c755bf302b
 +#include "block/block_int-global-state.h"
 +#include "block/blockjob.h"
 +#include "block/dirty-bitmap.h"
-+#include "block/graph-lock.h"
 +#include "qapi/qapi-commands-block.h"
 +#include "qapi/qmp/qerror.h"
 +#include "qemu/cutils.h"
@@ -626,6 +676,7 @@ index 0000000000..c755bf302b
 + * ---end-bad-example--
 + *
 + * ==> Always use CoMutext inside coroutines.
++ * ==> Never acquire/release AioContext withing coroutines (because that use QemuRecMutex)
 + *
 + */
 +
@@ -678,6 +729,7 @@ index 0000000000..c755bf302b
 +    uint64_t block_size;
 +    uint8_t dev_id;
 +    int completed_ret; // INT_MAX if not completed
++    char targetfile[PATH_MAX];
 +    BdrvDirtyBitmap *bitmap;
 +    BlockDriverState *target;
 +    BlockJob *job;
@@ -898,12 +950,7 @@ index 0000000000..c755bf302b
 +
 +    qemu_co_mutex_lock(&backup_state.backup_mutex);
 +
-+    /*
-+     * All jobs in the transaction will be canceled when one receives an error.
-+     * The first error wins, so only set it for ECANCELED if it was the last
-+     * job. This allows more interesting errors from other jobs to win.
-+     */
-+    if (ret < 0 && (ret != -ECANCELED || !g_list_nth(backup_state.di_list, 1))) {
++    if (ret < 0) {
 +        Error *local_err = NULL;
 +        error_setg(&local_err, "job failed with err %d - %s", ret, strerror(-ret));
 +        pvebackup_propagate_error(local_err);
@@ -927,6 +974,13 @@ index 0000000000..c755bf302b
 +        }
 +    }
 +
++    if (di->job) {
++        WITH_JOB_LOCK_GUARD() {
++            job_unref_locked(&di->job->job);
++            di->job = NULL;
++        }
++    }
++
 +    // remove self from job list
 +    backup_state.di_list = g_list_remove(backup_state.di_list, di);
 +
@@ -946,16 +1000,6 @@ index 0000000000..c755bf302b
 +    di->completed_ret = ret;
 +
 +    /*
-+     * Needs to happen outside of coroutine, because it takes the graph write lock.
-+     */
-+    if (di->job) {
-+        WITH_JOB_LOCK_GUARD() {
-+            job_unref_locked(&di->job->job);
-+            di->job = NULL;
-+        }
-+    }
-+
-+    /*
 +     * Schedule stream cleanup in async coroutine. close_image and finish might
 +     * take a while, so we can't block on them here. This way it also doesn't
 +     * matter if we're already running in a coroutine or not.
@@ -1076,7 +1120,8 @@ index 0000000000..c755bf302b
 +}
 +
 +/*
-+ * backup_job_create can *not* be run from a coroutine, so this can't either.
++ * backup_job_create can *not* be run from a coroutine (and requires an
++ * acquired AioContext), so this can't either.
 + * The caller is responsible that backup_mutex is held nonetheless.
 + */
 +static void create_backup_jobs_bh(void *opaque) {
@@ -1109,6 +1154,9 @@ index 0000000000..c755bf302b
 +            sync_mode = MIRROR_SYNC_MODE_BITMAP;
 +            bitmap_mode = BITMAP_SYNC_MODE_ON_SUCCESS;
 +        }
++        AioContext *aio_context = bdrv_get_aio_context(di->bs);
++        aio_context_acquire(aio_context);
++
 +        bdrv_drained_begin(di->bs);
 +
 +        BlockJob *job = backup_job_create(
@@ -1119,6 +1167,8 @@ index 0000000000..c755bf302b
 +
 +        bdrv_drained_end(di->bs);
 +
++        aio_context_release(aio_context);
++
 +        di->job = job;
 +        if (job) {
 +            WITH_JOB_LOCK_GUARD() {
@@ -1169,66 +1219,6 @@ index 0000000000..c755bf302b
 +    aio_co_enter(data->ctx, data->co);
 +}
 +
-+/*
-+ * Returns a list of device infos, which needs to be freed by the caller. In
-+ * case of an error, errp will be set, but the returned value might still be a
-+ * list.
-+ */
-+static GList coroutine_fn GRAPH_RDLOCK *get_device_info(
-+    const char *devlist,
-+    Error **errp)
-+{
-+    gchar **devs = NULL;
-+    GList *di_list = NULL;
-+
-+    if (devlist) {
-+        devs = g_strsplit_set(devlist, ",;:", -1);
-+
-+        gchar **d = devs;
-+        while (d && *d) {
-+            BlockBackend *blk = blk_by_name(*d);
-+            if (!blk) {
-+                error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
-+                          "Device '%s' not found", *d);
-+                goto err;
-+            }
-+            BlockDriverState *bs = blk_bs(blk);
-+            if (!bdrv_co_is_inserted(bs)) {
-+                error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, *d);
-+                goto err;
-+            }
-+            PVEBackupDevInfo *di = g_new0(PVEBackupDevInfo, 1);
-+            di->bs = bs;
-+            di_list = g_list_append(di_list, di);
-+            d++;
-+        }
-+    } else {
-+        BdrvNextIterator it;
-+
-+        for (BlockDriverState *bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
-+            if (!bdrv_co_is_inserted(bs) || bdrv_is_read_only(bs)) {
-+                continue;
-+            }
-+
-+            PVEBackupDevInfo *di = g_new0(PVEBackupDevInfo, 1);
-+            di->bs = bs;
-+            di_list = g_list_append(di_list, di);
-+        }
-+    }
-+
-+    if (!di_list) {
-+        error_set(errp, ERROR_CLASS_GENERIC_ERROR, "empty device list");
-+        goto err;
-+    }
-+
-+err:
-+    if (devs) {
-+        g_strfreev(devs);
-+    }
-+
-+    return di_list;
-+}
-+
 +UuidInfo coroutine_fn *qmp_backup(
 +    const char *backup_file,
 +    const char *password,
@@ -1254,10 +1244,13 @@ index 0000000000..c755bf302b
 +
 +    qemu_co_mutex_lock(&backup_state.backup_mutex);
 +
++    BlockBackend *blk;
++    BlockDriverState *bs = NULL;
 +    Error *local_err = NULL;
 +    uuid_t uuid;
 +    VmaWriter *vmaw = NULL;
 +    ProxmoxBackupHandle *pbs = NULL;
++    gchar **devs = NULL;
 +    GList *di_list = NULL;
 +    GList *l;
 +    UuidInfo *uuid_info;
@@ -1275,14 +1268,48 @@ index 0000000000..c755bf302b
 +    /* Todo: try to auto-detect format based on file name */
 +    format = has_format ? format : BACKUP_FORMAT_VMA;
 +
-+    bdrv_graph_co_rdlock();
-+    di_list = get_device_info(devlist, &local_err);
-+    bdrv_graph_co_rdunlock();
-+    if (local_err) {
-+        error_propagate(errp, local_err);
++    if (devlist) {
++        devs = g_strsplit_set(devlist, ",;:", -1);
++
++        gchar **d = devs;
++        while (d && *d) {
++            blk = blk_by_name(*d);
++            if (blk) {
++                bs = blk_bs(blk);
++                if (!bdrv_co_is_inserted(bs)) {
++                    error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, *d);
++                    goto err;
++                }
++                PVEBackupDevInfo *di = g_new0(PVEBackupDevInfo, 1);
++                di->bs = bs;
++                di_list = g_list_append(di_list, di);
++            } else {
++                error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
++                          "Device '%s' not found", *d);
++                goto err;
++            }
++            d++;
++        }
++
++    } else {
++        BdrvNextIterator it;
++
++        bs = NULL;
++        for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
++            if (!bdrv_co_is_inserted(bs) || bdrv_is_read_only(bs)) {
++                continue;
++            }
++
++            PVEBackupDevInfo *di = g_new0(PVEBackupDevInfo, 1);
++            di->bs = bs;
++            di_list = g_list_append(di_list, di);
++        }
++    }
++
++    if (!di_list) {
++        error_set(errp, ERROR_CLASS_GENERIC_ERROR, "empty device list");
 +        goto err;
 +    }
-+    assert(di_list);
 +
 +    size_t total = 0;
 +
@@ -1290,11 +1317,7 @@ index 0000000000..c755bf302b
 +    while (l) {
 +        PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
 +        l = g_list_next(l);
-+
-+        bdrv_graph_co_rdlock();
-+        bool blocked = bdrv_op_is_blocked(di->bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp);
-+        bdrv_graph_co_rdunlock();
-+        if (blocked) {
++        if (bdrv_op_is_blocked(di->bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) {
 +            goto err;
 +        }
 +
@@ -1378,9 +1401,7 @@ index 0000000000..c755bf302b
 +
 +            di->block_size = dump_cb_block_size;
 +
-+            bdrv_graph_co_rdlock();
 +            const char *devname = bdrv_get_device_name(di->bs);
-+            bdrv_graph_co_rdunlock();
 +            PBSBitmapAction action = PBS_BITMAP_ACTION_NOT_USED;
 +            size_t dirty = di->size;
 +
@@ -1456,9 +1477,7 @@ index 0000000000..c755bf302b
 +                goto err_mutex;
 +            }
 +
-+            bdrv_graph_co_rdlock();
 +            const char *devname = bdrv_get_device_name(di->bs);
-+            bdrv_graph_co_rdunlock();
 +            di->dev_id = vma_writer_register_stream(vmaw, devname, di->size);
 +            if (di->dev_id <= 0) {
 +                error_set(errp, ERROR_CLASS_GENERIC_ERROR,
@@ -1570,11 +1589,18 @@ index 0000000000..c755bf302b
 +            bdrv_co_unref(di->target);
 +        }
 +
++        if (di->targetfile[0]) {
++            unlink(di->targetfile);
++        }
 +        g_free(di);
 +    }
 +    g_list_free(di_list);
 +    backup_state.di_list = NULL;
 +
++    if (devs) {
++        g_strfreev(devs);
++    }
++
 +    if (vmaw) {
 +        Error *err = NULL;
 +        vma_writer_close(vmaw, &err);
@@ -1683,10 +1709,10 @@ index 0000000000..c755bf302b
 +    return ret;
 +}
 diff --git a/qapi/block-core.json b/qapi/block-core.json
-index 3db587a6e4..d05fffce1d 100644
+index bb471c078d..1b8462a51b 100644
 --- a/qapi/block-core.json
 +++ b/qapi/block-core.json
-@@ -851,6 +851,239 @@
+@@ -839,6 +839,235 @@
  { 'command': 'query-block', 'returns': ['BlockInfo'],
    'allow-preconfig': true }
  
@@ -1755,9 +1781,6 @@ index 3db587a6e4..d05fffce1d 100644
 +# @config-file: a configuration file to include into
 +#               the backup archive.
 +#
-+# @firewall-file: a firewall configuration file to include into the backup
-+#     archive.
-+#
 +# @speed: the maximum speed, in bytes per second
 +#
 +# @devlist: list of block device names (separated by ',', ';'
@@ -1825,6 +1848,8 @@ index 3db587a6e4..d05fffce1d 100644
 +#
 +# Cancel the current executing backup process.
 +#
++# Returns: nothing on success
++#
 +# Notes: This command succeeds even if there is no backup process running.
 +#
 +##
@@ -1848,9 +1873,6 @@ index 3db587a6e4..d05fffce1d 100644
 +#
 +# @pbs-library-version: Running version of libproxmox-backup-qemu0 library.
 +#
-+# @backup-max-workers: Whether the 'max-workers' @BackupPerf setting is
-+#     supported or not.
-+#
 +##
 +{ 'struct': 'ProxmoxSupportStatus',
 +  'data': { 'pbs-dirty-bitmap': 'bool',
@@ -1927,10 +1949,10 @@ index 3db587a6e4..d05fffce1d 100644
  # @BlockDeviceTimedStats:
  #
 diff --git a/qapi/common.json b/qapi/common.json
-index 7558ce5430..6e3d800373 100644
+index 6fed9cde1a..630a2a8f9a 100644
 --- a/qapi/common.json
 +++ b/qapi/common.json
-@@ -200,3 +200,17 @@
+@@ -207,3 +207,17 @@
  ##
  { 'struct': 'HumanReadableText',
    'data': { 'human-readable-text': 'str' } }
@@ -1949,7 +1971,7 @@ index 7558ce5430..6e3d800373 100644
 +##
 +{ 'struct': 'UuidInfo', 'data': {'UUID': 'str'} }
 diff --git a/qapi/machine.json b/qapi/machine.json
-index 1d69bffaa0..731d8d2f60 100644
+index 7da3c519ba..888457f810 100644
 --- a/qapi/machine.json
 +++ b/qapi/machine.json
 @@ -4,6 +4,8 @@
@@ -1961,7 +1983,7 @@ index 1d69bffaa0..731d8d2f60 100644
  ##
  # = Machines
  ##
-@@ -237,20 +239,6 @@
+@@ -230,20 +232,6 @@
  ##
  { 'command': 'query-target', 'returns': 'TargetInfo' }
  

debian/patches/pve/0031-PVE-Backup-pbs-restore-new-command-to-restore-from-p.patch

@@ -14,10 +14,10 @@ Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
  create mode 100644 pbs-restore.c
 
 diff --git a/meson.build b/meson.build
-index d16b97cf3c..6de51c34cb 100644
+index d53976d621..c3330310d9 100644
 --- a/meson.build
 +++ b/meson.build
-@@ -4029,6 +4029,10 @@ if have_tools
+@@ -3914,6 +3914,10 @@ if have_tools
    vma = executable('vma', files('vma.c', 'vma-reader.c') + genh,
                     dependencies: [authz, block, crypto, io, qom], install: true)
  
@@ -26,8 +26,8 @@ index d16b97cf3c..6de51c34cb 100644
 +                    libproxmox_backup_qemu], install: true)
 +
    subdir('storage-daemon')
- 
-   foreach exe: [ 'qemu-img', 'qemu-io', 'qemu-nbd', 'qemu-storage-daemon']
+   subdir('contrib/rdmacm-mux')
+   subdir('contrib/elf2dmp')
 diff --git a/pbs-restore.c b/pbs-restore.c
 new file mode 100644
 index 0000000000..f03d9bab8d

debian/patches/pve/0032-PVE-Add-PBS-block-driver-to-map-backup-archives-into.patch

@@ -14,33 +14,35 @@ Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
      getlength is now a coroutine function]
 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
- block/meson.build    |   2 +
- block/pbs.c          | 313 +++++++++++++++++++++++++++++++++++++++++++
+ block/meson.build    |   3 +
+ block/pbs.c          | 305 +++++++++++++++++++++++++++++++++++++++++++
+ configure            |   9 ++
  meson.build          |   2 +-
- qapi/block-core.json |  29 ++++
+ qapi/block-core.json |  13 ++
  qapi/pragma.json     |   1 +
- 5 files changed, 346 insertions(+), 1 deletion(-)
+ 6 files changed, 332 insertions(+), 1 deletion(-)
  create mode 100644 block/pbs.c
 
 diff --git a/block/meson.build b/block/meson.build
-index 6bba803f94..1945e04eeb 100644
+index 6d468f89e5..becc99ac4e 100644
 --- a/block/meson.build
 +++ b/block/meson.build
-@@ -49,6 +49,8 @@ block_ss.add(files(
+@@ -50,6 +50,9 @@ block_ss.add(files(
    '../pve-backup.c',
  ), libproxmox_backup_qemu)
  
-+block_ss.add(files('pbs.c'), libproxmox_backup_qemu)
++block_ss.add(when: 'CONFIG_PBS_BDRV', if_true: files('pbs.c'))
++block_ss.add(when: 'CONFIG_PBS_BDRV', if_true: libproxmox_backup_qemu)
 +
  
  system_ss.add(when: 'CONFIG_TCG', if_true: files('blkreplay.c'))
  system_ss.add(files('block-ram-registrar.c'))
 diff --git a/block/pbs.c b/block/pbs.c
 new file mode 100644
-index 0000000000..aee66c2e93
+index 0000000000..a2211e0f3b
 --- /dev/null
 +++ b/block/pbs.c
-@@ -0,0 +1,313 @@
+@@ -0,0 +1,305 @@
 +/*
 + * Proxmox Backup Server read-only block driver
 + */
@@ -68,7 +70,7 @@ index 0000000000..aee66c2e93
 +
 +typedef struct {
 +    ProxmoxRestoreHandle *conn;
-+    uint8_t aid;
++    char aid;
 +    int64_t length;
 +
 +    char *repository;
@@ -201,18 +203,12 @@ index 0000000000..aee66c2e93
 +    }
 +
 +    /* acquire handle and length */
-+    ret = proxmox_restore_open_image(s->conn, s->archive, &pbs_error);
-+    if (ret < 0) {
++    s->aid = proxmox_restore_open_image(s->conn, s->archive, &pbs_error);
++    if (s->aid < 0) {
 +        if (pbs_error && errp) error_setg(errp, "PBS open_image failed: %s", pbs_error);
 +        if (pbs_error) proxmox_backup_free_error(pbs_error);
 +        return -ENODEV;
 +    }
-+    if (ret > UINT8_MAX) {
-+        error_setg(errp, "PBS open_image returned an ID larger than %u", UINT8_MAX);
-+        return -ENODEV;
-+    }
-+    s->aid = ret;
-+
 +    s->length = proxmox_restore_get_image_length(s->conn, s->aid, &pbs_error);
 +    if (s->length < 0) {
 +        if (pbs_error && errp) error_setg(errp, "PBS get_image_length failed: %s", pbs_error);
@@ -238,8 +234,7 @@ index 0000000000..aee66c2e93
 +    proxmox_restore_disconnect(s->conn);
 +}
 +
-+static coroutine_fn int64_t GRAPH_RDLOCK
-+pbs_co_getlength(BlockDriverState *bs)
++static coroutine_fn int64_t pbs_co_getlength(BlockDriverState *bs)
 +{
 +    BDRVPBSState *s = bs->opaque;
 +    return s->length;
@@ -256,9 +251,9 @@ index 0000000000..aee66c2e93
 +    aio_co_schedule(rcb->ctx, rcb->co);
 +}
 +
-+static coroutine_fn int GRAPH_RDLOCK
-+pbs_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes,
-+              QEMUIOVector *qiov, BdrvRequestFlags flags)
++static coroutine_fn int pbs_co_preadv(BlockDriverState *bs,
++                                      int64_t offset, int64_t bytes,
++                                      QEMUIOVector *qiov, BdrvRequestFlags flags)
 +{
 +    BDRVPBSState *s = bs->opaque;
 +    int ret;
@@ -303,17 +298,16 @@ index 0000000000..aee66c2e93
 +    return 0;
 +}
 +
-+static coroutine_fn int GRAPH_RDLOCK
-+pbs_co_pwritev(BlockDriverState *bs, int64_t offset, int64_t bytes,
-+               QEMUIOVector *qiov, BdrvRequestFlags flags)
++static coroutine_fn int pbs_co_pwritev(BlockDriverState *bs,
++                                       int64_t offset, int64_t bytes,
++                                       QEMUIOVector *qiov, BdrvRequestFlags flags)
 +{
 +    fprintf(stderr, "pbs-bdrv: cannot write to backup file, make sure "
 +           "any attached disk devices are set to read-only!\n");
 +    return -EPERM;
 +}
 +
-+static void GRAPH_RDLOCK
-+pbs_refresh_filename(BlockDriverState *bs)
++static void pbs_refresh_filename(BlockDriverState *bs)
 +{
 +    BDRVPBSState *s = bs->opaque;
 +    if (s->namespace) {
@@ -354,11 +348,52 @@ index 0000000000..aee66c2e93
 +}
 +
 +block_init(bdrv_pbs_init);
+diff --git a/configure b/configure
+index 133f4e3235..f5a830c1f3 100755
+--- a/configure
++++ b/configure
+@@ -256,6 +256,7 @@ qemu_suffix="qemu"
+ softmmu="yes"
+ linux_user=""
+ bsd_user=""
++pbs_bdrv="yes"
+ plugins="$default_feature"
+ ninja=""
+ python=
+@@ -809,6 +810,10 @@ for opt do
+   ;;
+   --enable-download) download="enabled"; git_submodules_action=update;
+   ;;
++  --disable-pbs-bdrv) pbs_bdrv="no"
++  ;;
++  --enable-pbs-bdrv) pbs_bdrv="yes"
++  ;;
+   --enable-plugins) if test "$mingw32" = "yes"; then
+                         error_exit "TCG plugins not currently supported on Windows platforms"
+                     else
+@@ -959,6 +964,7 @@ cat << EOF
+   bsd-user        all BSD usermode emulation targets
+   pie             Position Independent Executables
+   debug-tcg       TCG debugging (default is disabled)
++  pbs-bdrv        Proxmox backup server read-only block driver support
+ 
+ NOTE: The object files are built at the place where configure is launched
+ EOF
+@@ -1744,6 +1750,9 @@ if test "$solaris" = "yes" ; then
+ fi
+ echo "SRC_PATH=$source_path" >> $config_host_mak
+ echo "TARGET_DIRS=$target_list" >> $config_host_mak
++if test "$pbs_bdrv" = "yes" ; then
++  echo "CONFIG_PBS_BDRV=y" >> $config_host_mak
++fi
+ 
+ # XXX: suppress that
+ if [ "$bsd" = "yes" ] ; then
 diff --git a/meson.build b/meson.build
-index 6de51c34cb..3bc039f60f 100644
+index c3330310d9..cbfc9a43fb 100644
 --- a/meson.build
 +++ b/meson.build
-@@ -4477,7 +4477,7 @@ summary_info += {'bzip2 support':     libbzip2}
+@@ -4319,7 +4319,7 @@ summary_info += {'bzip2 support':     libbzip2}
  summary_info += {'lzfse support':     liblzfse}
  summary_info += {'zstd support':      zstd}
  summary_info += {'NUMA host support': numa}
@@ -368,10 +403,10 @@ index 6de51c34cb..3bc039f60f 100644
  summary_info += {'libdaxctl support': libdaxctl}
  summary_info += {'libudev':           libudev}
 diff --git a/qapi/block-core.json b/qapi/block-core.json
-index d05fffce1d..e7cf3d94f3 100644
+index 1b8462a51b..d67a6d448a 100644
 --- a/qapi/block-core.json
 +++ b/qapi/block-core.json
-@@ -3457,6 +3457,7 @@
+@@ -3396,6 +3396,7 @@
              'parallels', 'preallocate', 'qcow', 'qcow2', 'qed', 'quorum',
              'raw', 'rbd',
              { 'name': 'replication', 'if': 'CONFIG_REPLICATION' },
@@ -379,7 +414,7 @@ index d05fffce1d..e7cf3d94f3 100644
              'ssh', 'throttle', 'vdi', 'vhdx',
              { 'name': 'virtio-blk-vfio-pci', 'if': 'CONFIG_BLKIO' },
              { 'name': 'virtio-blk-vhost-user', 'if': 'CONFIG_BLKIO' },
-@@ -3543,6 +3544,33 @@
+@@ -3482,6 +3483,17 @@
  { 'struct': 'BlockdevOptionsNull',
    'data': { '*size': 'int', '*latency-ns': 'uint64', '*read-zeroes': 'bool' } }
  
@@ -388,22 +423,6 @@ index d05fffce1d..e7cf3d94f3 100644
 +#
 +# Driver specific block device options for the PBS backend.
 +#
-+# @repository: Proxmox Backup Server repository.
-+#
-+# @snapshot: backup snapshots ID.
-+#
-+# @archive: archive name.
-+#
-+# @keyfile: keyfile to use for encryption.
-+#
-+# @password: password to use for connection.
-+#
-+# @fingerprint: backup server fingerprint.
-+#
-+# @key_password: password to unlock key.
-+#
-+# @namespace: namespace where backup snapshot lives.
-+#
 +##
 +{ 'struct': 'BlockdevOptionsPbs',
 +  'data': { 'repository': 'str', 'snapshot': 'str', 'archive': 'str',
@@ -413,7 +432,7 @@ index d05fffce1d..e7cf3d94f3 100644
  ##
  # @BlockdevOptionsNVMe:
  #
-@@ -4977,6 +5005,7 @@
+@@ -4890,6 +4902,7 @@
        'nfs':        'BlockdevOptionsNfs',
        'null-aio':   'BlockdevOptionsNull',
        'null-co':    'BlockdevOptionsNull',
@@ -422,10 +441,10 @@ index d05fffce1d..e7cf3d94f3 100644
        'nvme-io_uring': { 'type': 'BlockdevOptionsNvmeIoUring',
                           'if': 'CONFIG_BLKIO' },
 diff --git a/qapi/pragma.json b/qapi/pragma.json
-index be8fa304c5..7ff46bd128 100644
+index 325e684411..b6079f6a0e 100644
 --- a/qapi/pragma.json
 +++ b/qapi/pragma.json
-@@ -100,6 +100,7 @@
+@@ -45,6 +45,7 @@
          'BlockInfo',                # query-block
          'BlockdevAioOptions',       # blockdev-add, -blockdev
          'BlockdevDriver',           # blockdev-add, query-blockstats, ...

debian/patches/pve/0033-PVE-redirect-stderr-to-journal-when-daemonized.patch

@@ -9,15 +9,15 @@ fitting.
 Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
 Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 ---
- meson.build | 3 ++-
+ meson.build | 2 ++
  os-posix.c  | 7 +++++--
- 2 files changed, 7 insertions(+), 3 deletions(-)
+ 2 files changed, 7 insertions(+), 2 deletions(-)
 
 diff --git a/meson.build b/meson.build
-index 3bc039f60f..067e8956a7 100644
+index cbfc9a43fb..8206270272 100644
 --- a/meson.build
 +++ b/meson.build
-@@ -1923,6 +1923,7 @@ endif
+@@ -1779,6 +1779,7 @@ endif
  has_gettid = cc.has_function('gettid')
  
  libuuid = cc.find_library('uuid', required: true)
@@ -25,29 +25,28 @@ index 3bc039f60f..067e8956a7 100644
  libproxmox_backup_qemu = cc.find_library('proxmox_backup_qemu', required: true)
  
  # libselinux
-@@ -3530,7 +3531,7 @@ if have_block
-   if host_os == 'windows'
-     system_ss.add(files('os-win32.c'))
-   else
--    blockdev_ss.add(files('os-posix.c'))
-+    blockdev_ss.add(files('os-posix.c'), libsystemd)
-   endif
+@@ -3406,6 +3407,7 @@ if have_block
+   # os-posix.c contains POSIX-specific functions used by qemu-storage-daemon,
+   # os-win32.c does not
+   blockdev_ss.add(when: 'CONFIG_POSIX', if_true: files('os-posix.c'))
++  blockdev_ss.add(when: 'CONFIG_POSIX', if_true: libsystemd)
+   system_ss.add(when: 'CONFIG_WIN32', if_true: [files('os-win32.c')])
  endif
  
 diff --git a/os-posix.c b/os-posix.c
-index a4284e2c07..197a2120fd 100644
+index cfcb96533c..fb2ad87009 100644
 --- a/os-posix.c
 +++ b/os-posix.c
-@@ -29,6 +29,8 @@
+@@ -28,6 +28,8 @@
  #include <pwd.h>
  #include <grp.h>
  #include <libgen.h>
 +#include <systemd/sd-journal.h>
 +#include <syslog.h>
  
- #include "qemu/error-report.h"
- #include "qemu/log.h"
-@@ -302,9 +304,10 @@ void os_setup_post(void)
+ /* Needed early for CONFIG_BSD etc. */
+ #include "net/slirp.h"
+@@ -310,9 +312,10 @@ void os_setup_post(void)
  
          dup2(fd, 0);
          dup2(fd, 1);

debian/patches/pve/0034-PVE-Migrate-dirty-bitmap-state-via-savevm.patch

@@ -26,10 +26,10 @@ Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
  create mode 100644 migration/pbs-state.c
 
 diff --git a/include/migration/misc.h b/include/migration/misc.h
-index c9e200f4eb..12c99ebc69 100644
+index 7dcc0b5c2c..4c940b2475 100644
 --- a/include/migration/misc.h
 +++ b/include/migration/misc.h
-@@ -117,4 +117,7 @@ bool migration_in_bg_snapshot(void);
+@@ -77,4 +77,7 @@ bool migration_in_bg_snapshot(void);
  /* migration/block-dirty-bitmap.c */
  void dirty_bitmap_mig_init(void);
  
@@ -38,7 +38,7 @@ index c9e200f4eb..12c99ebc69 100644
 +
  #endif
 diff --git a/migration/meson.build b/migration/meson.build
-index 800f12a60d..35a4306183 100644
+index 07f6057acc..343994d891 100644
 --- a/migration/meson.build
 +++ b/migration/meson.build
 @@ -7,7 +7,9 @@ migration_files = files(
@@ -52,17 +52,17 @@ index 800f12a60d..35a4306183 100644
  system_ss.add(files(
    'block-dirty-bitmap.c',
 diff --git a/migration/migration.c b/migration/migration.c
-index 86bf76e925..b8d7e471a4 100644
+index 7a4c8beb5d..0a955a2a18 100644
 --- a/migration/migration.c
 +++ b/migration/migration.c
-@@ -239,6 +239,7 @@ void migration_object_init(void)
+@@ -162,6 +162,7 @@ void migration_object_init(void)
      blk_mig_init();
      ram_mig_init();
      dirty_bitmap_mig_init();
 +    pbs_state_mig_init();
  }
  
- typedef struct {
+ void migration_cancel(const Error *error)
 diff --git a/migration/pbs-state.c b/migration/pbs-state.c
 new file mode 100644
 index 0000000000..887e998b9e
@@ -174,10 +174,10 @@ index 0000000000..887e998b9e
 +                         NULL);
 +}
 diff --git a/pve-backup.c b/pve-backup.c
-index c755bf302b..5ebb6a3947 100644
+index d84d807654..9c8b88d075 100644
 --- a/pve-backup.c
 +++ b/pve-backup.c
-@@ -1085,6 +1085,7 @@ ProxmoxSupportStatus *qmp_query_proxmox_support(Error **errp)
+@@ -1060,6 +1060,7 @@ ProxmoxSupportStatus *qmp_query_proxmox_support(Error **errp)
      ret->pbs_library_version = g_strdup(proxmox_backup_qemu_version());
      ret->pbs_dirty_bitmap = true;
      ret->pbs_dirty_bitmap_savevm = true;
@@ -186,10 +186,10 @@ index c755bf302b..5ebb6a3947 100644
      ret->pbs_masterkey = true;
      ret->backup_max_workers = true;
 diff --git a/qapi/block-core.json b/qapi/block-core.json
-index e7cf3d94f3..282e2e8a8c 100644
+index d67a6d448a..09de550c95 100644
 --- a/qapi/block-core.json
 +++ b/qapi/block-core.json
-@@ -1004,6 +1004,11 @@
+@@ -991,6 +991,11 @@
  # @pbs-dirty-bitmap-savevm: True if 'dirty-bitmaps' migration capability can
  #                           safely be set for savevm-async.
  #
@@ -201,7 +201,7 @@ index e7cf3d94f3..282e2e8a8c 100644
  # @pbs-masterkey: True if the QMP backup call supports the 'master_keyfile'
  #                 parameter.
  #
-@@ -1017,6 +1022,7 @@
+@@ -1001,6 +1006,7 @@
    'data': { 'pbs-dirty-bitmap': 'bool',
              'query-bitmap-info': 'bool',
              'pbs-dirty-bitmap-savevm': 'bool',

debian/patches/pve/0035-migration-block-dirty-bitmap-migrate-other-bitmaps-e.patch

@@ -19,7 +19,7 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c
-index 2708abf3d7..fb17c01308 100644
+index e1ae3b7316..285dd1d148 100644
 --- a/migration/block-dirty-bitmap.c
 +++ b/migration/block-dirty-bitmap.c
 @@ -540,7 +540,7 @@ static int add_bitmaps_to_list(DBMSaveState *s, BlockDriverState *bs,

debian/patches/pve/0036-PVE-fall-back-to-open-iscsi-initiatorname.patch

@@ -21,10 +21,10 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 30 insertions(+)
 
 diff --git a/block/iscsi.c b/block/iscsi.c
-index 2ff14b7472..46f275fbf7 100644
+index 34f97ab646..398782963d 100644
 --- a/block/iscsi.c
 +++ b/block/iscsi.c
-@@ -1392,12 +1392,42 @@ static char *get_initiator_name(QemuOpts *opts)
+@@ -1391,12 +1391,42 @@ static char *get_initiator_name(QemuOpts *opts)
      const char *name;
      char *iscsi_name;
      UuidInfo *uuid_info;

debian/patches/pve/0037-PVE-block-stream-increase-chunk-size.patch

@@ -11,7 +11,7 @@ Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/block/stream.c b/block/stream.c
-index 7031eef12b..d2da83ae7c 100644
+index e522bbdec5..afed72db55 100644
 --- a/block/stream.c
 +++ b/block/stream.c
 @@ -27,7 +27,7 @@ enum {

debian/patches/pve/0038-block-io-accept-NULL-qiov-in-bdrv_pad_request.patch

@@ -0,0 +1,33 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Stefan Reiter <s.reiter@proxmox.com>
+Date: Tue, 2 Mar 2021 16:11:54 +0100
+Subject: [PATCH] block/io: accept NULL qiov in bdrv_pad_request
+
+Some operations, e.g. block-stream, perform reads while discarding the
+results (only copy-on-read matters). In this case they will pass NULL as
+the target QEMUIOVector, which will however trip bdrv_pad_request, since
+it wants to extend its passed vector.
+
+Simply check for NULL and do nothing, there's no reason to pad the
+target if it will be discarded anyway.
+
+Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
+---
+ block/io.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/block/io.c b/block/io.c
+index 83d1b1dfdc..24a3c84c93 100644
+--- a/block/io.c
++++ b/block/io.c
+@@ -1710,6 +1710,10 @@ static int bdrv_pad_request(BlockDriverState *bs,
+     int sliced_niov;
+     size_t sliced_head, sliced_tail;
+ 
++    if (!qiov) {
++        return 0;
++    }
++
+     /* Should have been checked by the caller already */
+     ret = bdrv_check_request32(*offset, *bytes, *qiov, *qiov_offset);
+     if (ret < 0) {

debian/patches/pve/0039-block-add-alloc-track-driver.patch

@@ -19,33 +19,27 @@ well.
 This only worked if the target supports backing images, so up until now
 only for qcow2, with alloc-track any driver for the target can be used.
 
-Replacing the node cannot be done in the
-track_co_change_backing_file() callback, because replacing a node
-cannot happen in a coroutine and requires the block graph lock
-exclusively. Could either become a special option for the stream job,
-or maybe the upcoming blockdev-replace QMP command can be used in the
-future.
+If 'auto-remove' is set, alloc-track will automatically detach itself
+once the backing image is removed. It will be replaced by 'file'.
 
 Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
 Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 [FE: adapt to changed function signatures
      make error return value consistent with QEMU
-     avoid premature break during read
-     adhere to block graph lock requirements]
+     avoid premature break during read]
 Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
- block/alloc-track.c | 366 ++++++++++++++++++++++++++++++++++++++++++++
+ block/alloc-track.c | 352 ++++++++++++++++++++++++++++++++++++++++++++
  block/meson.build   |   1 +
- block/stream.c      |  34 ++++
- 3 files changed, 401 insertions(+)
+ 2 files changed, 353 insertions(+)
  create mode 100644 block/alloc-track.c
 
 diff --git a/block/alloc-track.c b/block/alloc-track.c
 new file mode 100644
-index 0000000000..b9f8ea9137
+index 0000000000..b75d7c6460
 --- /dev/null
 +++ b/block/alloc-track.c
-@@ -0,0 +1,366 @@
+@@ -0,0 +1,352 @@
 +/*
 + * Node to allow backing images to be applied to any node. Assumes a blank
 + * image to begin with, only new writes are tracked as allocated, thus this
@@ -62,11 +56,9 @@ index 0000000000..b9f8ea9137
 +#include "qapi/error.h"
 +#include "block/block_int.h"
 +#include "block/dirty-bitmap.h"
-+#include "block/graph-lock.h"
 +#include "qapi/qmp/qdict.h"
 +#include "qapi/qmp/qstring.h"
 +#include "qemu/cutils.h"
-+#include "qemu/error-report.h"
 +#include "qemu/option.h"
 +#include "qemu/module.h"
 +#include "sysemu/block-backend.h"
@@ -75,12 +67,12 @@ index 0000000000..b9f8ea9137
 +
 +typedef enum DropState {
 +    DropNone,
++    DropRequested,
 +    DropInProgress,
 +} DropState;
 +
 +typedef struct {
 +    BdrvDirtyBitmap *bitmap;
-+    uint64_t granularity;
 +    DropState drop_state;
 +    bool auto_remove;
 +} BDRVAllocTrackState;
@@ -99,29 +91,26 @@ index 0000000000..b9f8ea9137
 +    },
 +};
 +
-+static void GRAPH_RDLOCK
-+track_refresh_limits(BlockDriverState *bs, Error **errp)
++static void track_refresh_limits(BlockDriverState *bs, Error **errp)
 +{
-+    BDRVAllocTrackState *s = bs->opaque;
++    BlockDriverInfo bdi;
 +
 +    if (!bs->file) {
 +        return;
 +    }
 +
-+    /*
-+     * Always use alignment from underlying write device so RMW cycle for
-+     * bdrv_pwritev reads data from our backing via track_co_preadv. Also use at
-+     * least the bitmap granularity.
-+     */
++    /* always use alignment from underlying write device so RMW cycle for
++     * bdrv_pwritev reads data from our backing via track_co_preadv (no partial
++     * cluster allocation in 'file') */
++    bdrv_get_info(bs->file->bs, &bdi);
 +    bs->bl.request_alignment = MAX(bs->file->bs->bl.request_alignment,
-+                                   s->granularity);
++                                   MAX(bdi.cluster_size, BDRV_SECTOR_SIZE));
 +}
 +
 +static int track_open(BlockDriverState *bs, QDict *options, int flags,
 +                      Error **errp)
 +{
 +    BDRVAllocTrackState *s = bs->opaque;
-+    BdrvChild *file = NULL;
 +    QemuOpts *opts;
 +    Error *local_err = NULL;
 +    int ret = 0;
@@ -137,45 +126,18 @@ index 0000000000..b9f8ea9137
 +    s->auto_remove = qemu_opt_get_bool(opts, TRACK_OPT_AUTO_REMOVE, false);
 +
 +    /* open the target (write) node, backing will be attached by block layer */
-+    file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds,
-+                           BDRV_CHILD_DATA | BDRV_CHILD_METADATA, false,
-+                           &local_err);
-+    bdrv_graph_wrlock();
-+    bs->file = file;
-+    bdrv_graph_wrunlock();
++    bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds,
++                               BDRV_CHILD_DATA | BDRV_CHILD_METADATA, false,
++                               &local_err);
 +    if (local_err) {
 +        ret = -EINVAL;
 +        error_propagate(errp, local_err);
 +        goto fail;
 +    }
 +
-+    bdrv_graph_rdlock_main_loop();
-+    BlockDriverInfo bdi = {0};
-+    ret = bdrv_get_info(bs->file->bs, &bdi);
-+    if (ret < 0) {
-+        /*
-+         * Not a hard failure. Worst that can happen is partial cluster
-+         * allocation in the write target. However, the driver here returns its
-+         * allocation status based on the dirty bitmap, so any other data that
-+         * maps to such a cluster will still be copied later by a stream job (or
-+         * during writes to that cluster).
-+         */
-+        warn_report("alloc-track: unable to query cluster size for write target: %s",
-+                    strerror(ret));
-+    }
-+    ret = 0;
-+    /*
-+     * Always consider alignment from underlying write device so RMW cycle for
-+     * bdrv_pwritev reads data from our backing via track_co_preadv. Also try to
-+     * avoid partial cluster allocation in the write target by considering the
-+     * cluster size.
-+     */
-+    s->granularity = MAX(bs->file->bs->bl.request_alignment,
-+                         MAX(bdi.cluster_size, BDRV_SECTOR_SIZE));
 +    track_refresh_limits(bs, errp);
-+    s->bitmap = bdrv_create_dirty_bitmap(bs->file->bs, s->granularity, NULL,
-+                                         &local_err);
-+    bdrv_graph_rdunlock_main_loop();
++    uint64_t gran = bs->bl.request_alignment;
++    s->bitmap = bdrv_create_dirty_bitmap(bs->file->bs, gran, NULL, &local_err);
 +    if (local_err) {
 +        ret = -EIO;
 +        error_propagate(errp, local_err);
@@ -186,9 +148,7 @@ index 0000000000..b9f8ea9137
 +
 +fail:
 +    if (ret < 0) {
-+        bdrv_graph_wrlock();
 +        bdrv_unref_child(bs, bs->file);
-+        bdrv_graph_wrunlock();
 +        if (s->bitmap) {
 +            bdrv_release_dirty_bitmap(s->bitmap);
 +        }
@@ -205,15 +165,13 @@ index 0000000000..b9f8ea9137
 +    }
 +}
 +
-+static coroutine_fn int64_t GRAPH_RDLOCK
-+track_co_getlength(BlockDriverState *bs)
++static coroutine_fn int64_t track_co_getlength(BlockDriverState *bs)
 +{
 +    return bdrv_co_getlength(bs->file->bs);
 +}
 +
-+static int coroutine_fn GRAPH_RDLOCK
-+track_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes,
-+                QEMUIOVector *qiov, BdrvRequestFlags flags)
++static int coroutine_fn track_co_preadv(BlockDriverState *bs,
++    int64_t offset, int64_t bytes, QEMUIOVector *qiov, BdrvRequestFlags flags)
 +{
 +    BDRVAllocTrackState *s = bs->opaque;
 +    QEMUIOVector local_qiov;
@@ -271,39 +229,36 @@ index 0000000000..b9f8ea9137
 +    return ret;
 +}
 +
-+static int coroutine_fn GRAPH_RDLOCK
-+track_co_pwritev(BlockDriverState *bs, int64_t offset, int64_t bytes,
-+                 QEMUIOVector *qiov, BdrvRequestFlags flags)
++static int coroutine_fn track_co_pwritev(BlockDriverState *bs,
++    int64_t offset, int64_t bytes, QEMUIOVector *qiov, BdrvRequestFlags flags)
 +{
 +    return bdrv_co_pwritev(bs->file, offset, bytes, qiov, flags);
 +}
 +
-+static int coroutine_fn GRAPH_RDLOCK
-+track_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int64_t bytes,
-+                       BdrvRequestFlags flags)
++static int coroutine_fn track_co_pwrite_zeroes(BlockDriverState *bs,
++    int64_t offset, int64_t bytes, BdrvRequestFlags flags)
 +{
 +    return bdrv_co_pwrite_zeroes(bs->file, offset, bytes, flags);
 +}
 +
-+static int coroutine_fn GRAPH_RDLOCK
-+track_co_pdiscard(BlockDriverState *bs, int64_t offset, int64_t bytes)
++static int coroutine_fn track_co_pdiscard(BlockDriverState *bs,
++    int64_t offset, int64_t bytes)
 +{
 +    return bdrv_co_pdiscard(bs->file, offset, bytes);
 +}
 +
-+static coroutine_fn int GRAPH_RDLOCK
-+track_co_flush(BlockDriverState *bs)
++static coroutine_fn int track_co_flush(BlockDriverState *bs)
 +{
 +    return bdrv_co_flush(bs->file->bs);
 +}
 +
-+static int coroutine_fn GRAPH_RDLOCK
-+track_co_block_status(BlockDriverState *bs, bool want_zero,
-+                                            int64_t offset,
-+                                            int64_t bytes,
-+                                            int64_t *pnum,
-+                                            int64_t *map,
-+                                            BlockDriverState **file)
++static int coroutine_fn track_co_block_status(BlockDriverState *bs,
++                                              bool want_zero,
++                                              int64_t offset,
++                                              int64_t bytes,
++                                              int64_t *pnum,
++                                              int64_t *map,
++                                              BlockDriverState **file)
 +{
 +    BDRVAllocTrackState *s = bs->opaque;
 +
@@ -329,10 +284,10 @@ index 0000000000..b9f8ea9137
 +    return 0;
 +}
 +
-+static void GRAPH_RDLOCK
-+track_child_perm(BlockDriverState *bs, BdrvChild *c, BdrvChildRole role,
-+                 BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared,
-+                 uint64_t *nperm, uint64_t *nshared)
++static void track_child_perm(BlockDriverState *bs, BdrvChild *c,
++                             BdrvChildRole role, BlockReopenQueue *reopen_queue,
++                             uint64_t perm, uint64_t shared,
++                             uint64_t *nperm, uint64_t *nshared)
 +{
 +    BDRVAllocTrackState *s = bs->opaque;
 +
@@ -355,28 +310,53 @@ index 0000000000..b9f8ea9137
 +    }
 +}
 +
-+static int coroutine_fn GRAPH_RDLOCK
-+track_co_change_backing_file(BlockDriverState *bs, const char *backing_file,
-+                             const char *backing_fmt)
++static void track_drop(void *opaque)
 +{
-+    /*
-+     * Note that the actual backing file graph change is already done in the
-+     * stream job itself with bdrv_set_backing_hd_drained(), so no need to
-+     * actually do anything here. But still needs to be implemented, to make
-+     * our caller (i.e. bdrv_co_change_backing_file() do the right thing).
-+     *
-+     * FIXME
-+     * We'd like to auto-remove ourselves from the block graph, but it cannot
-+     * be done from a coroutine. Currently done in the stream job, where it
-+     * kinda fits better, but in the long-term, a special parameter would be
-+     * nice (or done via qemu-server via upcoming blockdev-replace QMP command).
-+     */
-+    if (backing_file == NULL) {
-+        BDRVAllocTrackState *s = bs->opaque;
-+        bdrv_drained_begin(bs);
-+        s->drop_state = DropInProgress;
-+        bdrv_child_refresh_perms(bs, bs->file, &error_abort);
-+        bdrv_drained_end(bs);
++    BlockDriverState *bs = (BlockDriverState*)opaque;
++    BlockDriverState *file = bs->file->bs;
++    BDRVAllocTrackState *s = bs->opaque;
++
++    assert(file);
++
++    /* we rely on the fact that we're not used anywhere else, so let's wait
++     * until we're only used once - in the drive connected to the guest (and one
++     * ref is held by bdrv_ref in track_change_backing_file) */
++    if (bs->refcnt > 2) {
++        aio_bh_schedule_oneshot(qemu_get_aio_context(), track_drop, opaque);
++        return;
++    }
++    AioContext *aio_context = bdrv_get_aio_context(bs);
++    aio_context_acquire(aio_context);
++
++    bdrv_drained_begin(bs);
++
++    /* now that we're drained, we can safely set 'DropInProgress' */
++    s->drop_state = DropInProgress;
++    bdrv_child_refresh_perms(bs, bs->file, &error_abort);
++
++    bdrv_replace_node(bs, file, &error_abort);
++    bdrv_set_backing_hd(bs, NULL, &error_abort);
++    bdrv_drained_end(bs);
++    bdrv_unref(bs);
++    aio_context_release(aio_context);
++}
++
++static int track_change_backing_file(BlockDriverState *bs,
++                                     const char *backing_file,
++                                     const char *backing_fmt)
++{
++    BDRVAllocTrackState *s = bs->opaque;
++    if (s->auto_remove && s->drop_state == DropNone &&
++        backing_file == NULL && backing_fmt == NULL)
++    {
++        /* backing file has been disconnected, there's no longer any use for
++         * this node, so let's remove ourselves from the block graph - we need
++         * to schedule this for later however, since when this function is
++         * called, the blockjob modifying us is probably not done yet and has a
++         * blocker on 'bs' */
++        s->drop_state = DropRequested;
++        bdrv_ref(bs);
++        aio_bh_schedule_oneshot(qemu_get_aio_context(), track_drop, (void*)bs);
 +    }
 +
 +    return 0;
@@ -403,7 +383,7 @@ index 0000000000..b9f8ea9137
 +    .supports_backing                 = true,
 +
 +    .bdrv_co_block_status             = track_co_block_status,
-+    .bdrv_co_change_backing_file      = track_co_change_backing_file,
++    .bdrv_change_backing_file         = track_change_backing_file,
 +};
 +
 +static void bdrv_alloc_track_init(void)
@@ -413,7 +393,7 @@ index 0000000000..b9f8ea9137
 +
 +block_init(bdrv_alloc_track_init);
 diff --git a/block/meson.build b/block/meson.build
-index 1945e04eeb..2873f3a25a 100644
+index becc99ac4e..0a69836593 100644
 --- a/block/meson.build
 +++ b/block/meson.build
 @@ -2,6 +2,7 @@ block_ss.add(genh)
@@ -424,48 +404,3 @@ index 1945e04eeb..2873f3a25a 100644
    'amend.c',
    'backup.c',
    'backup-dump.c',
-diff --git a/block/stream.c b/block/stream.c
-index d2da83ae7c..f941cba14e 100644
---- a/block/stream.c
-+++ b/block/stream.c
-@@ -120,6 +120,40 @@ static int stream_prepare(Job *job)
-             ret = -EPERM;
-             goto out;
-         }
-+
-+        /*
-+         * This cannot be done in the co_change_backing_file callback, because
-+         * bdrv_replace_node() cannot be done in a coroutine. The latter also
-+         * requires the graph lock exclusively. Only required for the
-+         * alloc-track driver.
-+         *
-+         * The long-term plan is to either have an explicit parameter for the
-+         * stream job or use the upcoming blockdev-replace QMP command.
-+         */
-+        if (base_id == NULL && strcmp(unfiltered_bs->drv->format_name, "alloc-track") == 0) {
-+            BlockDriverState *file_bs;
-+
-+            bdrv_graph_rdlock_main_loop();
-+            file_bs = unfiltered_bs->file->bs;
-+            bdrv_graph_rdunlock_main_loop();
-+
-+            bdrv_ref(unfiltered_bs); // unrefed by bdrv_replace_node()
-+            bdrv_drained_begin(file_bs);
-+            bdrv_graph_wrlock();
-+
-+            bdrv_replace_node(unfiltered_bs, file_bs, &local_err);
-+
-+            bdrv_graph_wrunlock();
-+            bdrv_drained_end(file_bs);
-+            bdrv_unref(unfiltered_bs);
-+
-+            if (local_err) {
-+                error_prepend(&local_err, "failed to replace alloc-track node: ");
-+                error_report_err(local_err);
-+                ret = -EPERM;
-+                goto out;
-+            }
-+        }
-     }
- 
- out:

debian/patches/pve/0040-Revert-block-rbd-workaround-for-ceph-issue-53784.patch

@@ -7,16 +7,15 @@ This reverts commit fc176116cdea816ceb8dd969080b2b95f58edbc0 in
 preparation to revert 0347a8fd4c3faaedf119be04c197804be40a384b.
 
 Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 ---
  block/rbd.c | 42 ++----------------------------------------
  1 file changed, 2 insertions(+), 40 deletions(-)
 
 diff --git a/block/rbd.c b/block/rbd.c
-index 63f60d41be..367db42dce 100644
+index a4749f3b1b..53e0396b51 100644
 --- a/block/rbd.c
 +++ b/block/rbd.c
-@@ -1515,7 +1515,6 @@ static int coroutine_fn qemu_rbd_co_block_status(BlockDriverState *bs,
+@@ -1511,7 +1511,6 @@ static int coroutine_fn qemu_rbd_co_block_status(BlockDriverState *bs,
      int status, r;
      RBDDiffIterateReq req = { .offs = offset };
      uint64_t features, flags;
@@ -24,7 +23,7 @@ index 63f60d41be..367db42dce 100644
  
      assert(offset + bytes <= s->image_size);
  
-@@ -1543,43 +1542,7 @@ static int coroutine_fn qemu_rbd_co_block_status(BlockDriverState *bs,
+@@ -1539,43 +1538,7 @@ static int coroutine_fn qemu_rbd_co_block_status(BlockDriverState *bs,
          return status;
      }
  
@@ -69,7 +68,7 @@ index 63f60d41be..367db42dce 100644
                            qemu_rbd_diff_iterate_cb, &req);
      if (r < 0 && r != QEMU_RBD_EXIT_DIFF_ITERATE2) {
          return status;
-@@ -1598,8 +1561,7 @@ static int coroutine_fn qemu_rbd_co_block_status(BlockDriverState *bs,
+@@ -1594,8 +1557,7 @@ static int coroutine_fn qemu_rbd_co_block_status(BlockDriverState *bs,
          status = BDRV_BLOCK_ZERO | BDRV_BLOCK_OFFSET_VALID;
      }
  

debian/patches/pve/0041-Revert-block-rbd-fix-handling-of-holes-in-.bdrv_co_b.patch

@@ -8,16 +8,15 @@ This reverts commit 9e302f64bb407a9bb097b626da97228c2654cfee in
 preparation to revert 0347a8fd4c3faaedf119be04c197804be40a384b.
 
 Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 ---
  block/rbd.c | 10 +++++-----
  1 file changed, 5 insertions(+), 5 deletions(-)
 
 diff --git a/block/rbd.c b/block/rbd.c
-index 367db42dce..347b121626 100644
+index 53e0396b51..0913a0af39 100644
 --- a/block/rbd.c
 +++ b/block/rbd.c
-@@ -1474,11 +1474,11 @@ static int qemu_rbd_diff_iterate_cb(uint64_t offs, size_t len,
+@@ -1470,11 +1470,11 @@ static int qemu_rbd_diff_iterate_cb(uint64_t offs, size_t len,
      RBDDiffIterateReq *req = opaque;
  
      assert(req->offs + req->bytes <= offs);

debian/patches/pve/0042-Revert-block-rbd-implement-bdrv_co_block_status.patch

@@ -18,13 +18,12 @@ Upstream bug report:
 https://gitlab.com/qemu-project/qemu/-/issues/1026
 
 Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
 ---
  block/rbd.c | 112 ----------------------------------------------------
  1 file changed, 112 deletions(-)
 
 diff --git a/block/rbd.c b/block/rbd.c
-index 347b121626..e61b359b97 100644
+index 0913a0af39..1dab254517 100644
 --- a/block/rbd.c
 +++ b/block/rbd.c
 @@ -108,12 +108,6 @@ typedef struct RBDTask {
@@ -40,7 +39,7 @@ index 347b121626..e61b359b97 100644
  static int qemu_rbd_connect(rados_t *cluster, rados_ioctx_t *io_ctx,
                              BlockdevOptionsRbd *opts, bool cache,
                              const char *keypairs, const char *secretid,
-@@ -1460,111 +1454,6 @@ static ImageInfoSpecific *qemu_rbd_get_specific_info(BlockDriverState *bs,
+@@ -1456,111 +1450,6 @@ static ImageInfoSpecific *qemu_rbd_get_specific_info(BlockDriverState *bs,
      return spec_info;
  }
  
@@ -152,7 +151,7 @@ index 347b121626..e61b359b97 100644
  static int64_t coroutine_fn qemu_rbd_co_getlength(BlockDriverState *bs)
  {
      BDRVRBDState *s = bs->opaque;
-@@ -1800,7 +1689,6 @@ static BlockDriver bdrv_rbd = {
+@@ -1796,7 +1685,6 @@ static BlockDriver bdrv_rbd = {
  #ifdef LIBRBD_SUPPORTS_WRITE_ZEROES
      .bdrv_co_pwrite_zeroes  = qemu_rbd_co_pwrite_zeroes,
  #endif

debian/patches/pve/0042-alloc-track-error-out-when-auto-remove-is-not-set.patch

@@ -1,43 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Fiona Ebner <f.ebner@proxmox.com>
-Date: Tue, 26 Mar 2024 14:57:51 +0100
-Subject: [PATCH] alloc-track: error out when auto-remove is not set
-
-Since replacing the node now happens in the stream job, where the
-option cannot be read from (it's internal to the driver), it will
-always be treated as on.
-
-qemu-server will always set it, make sure to have other users notice
-the change (should they even exist). The option can be fully dropped
-in the future while adding a version guard in qemu-server.
-
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- block/alloc-track.c | 7 +++++--
- 1 file changed, 5 insertions(+), 2 deletions(-)
-
-diff --git a/block/alloc-track.c b/block/alloc-track.c
-index b9f8ea9137..f3ed2935c4 100644
---- a/block/alloc-track.c
-+++ b/block/alloc-track.c
-@@ -34,7 +34,6 @@ typedef struct {
-     BdrvDirtyBitmap *bitmap;
-     uint64_t granularity;
-     DropState drop_state;
--    bool auto_remove;
- } BDRVAllocTrackState;
- 
- static QemuOptsList runtime_opts = {
-@@ -86,7 +85,11 @@ static int track_open(BlockDriverState *bs, QDict *options, int flags,
-         goto fail;
-     }
- 
--    s->auto_remove = qemu_opt_get_bool(opts, TRACK_OPT_AUTO_REMOVE, false);
-+    if (!qemu_opt_get_bool(opts, TRACK_OPT_AUTO_REMOVE, false)) {
-+        error_setg(errp, "alloc-track: requires auto-remove option to be set to on");
-+        ret = -EINVAL;
-+        goto fail;
-+    }
- 
-     /* open the target (write) node, backing will be attached by block layer */
-     file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds,

debian/patches/pve/0043-alloc-track-avoid-seemingly-superfluous-child-permis.patch

@@ -1,84 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Fiona Ebner <f.ebner@proxmox.com>
-Date: Wed, 27 Mar 2024 11:15:39 +0100
-Subject: [PATCH] alloc-track: avoid seemingly superfluous child permission
- update
-
-Doesn't seem necessary nowadays (maybe after commit "alloc-track: fix
-deadlock during drop" where the dropping is not rescheduled and delayed
-anymore or some upstream change). Should there really be some issue,
-instead of having a drop state, this could also be just based off the
-fact whether there is still a backing child.
-
-Dumping the cumulative (shared) permissions for the BDS with a debug
-print yields the same values after this patch and with QEMU 8.1,
-namely 3 and 5.
-
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- block/alloc-track.c | 26 --------------------------
- 1 file changed, 26 deletions(-)
-
-diff --git a/block/alloc-track.c b/block/alloc-track.c
-index f3ed2935c4..29138dcc49 100644
---- a/block/alloc-track.c
-+++ b/block/alloc-track.c
-@@ -25,15 +25,9 @@
- 
- #define TRACK_OPT_AUTO_REMOVE "auto-remove"
- 
--typedef enum DropState {
--    DropNone,
--    DropInProgress,
--} DropState;
--
- typedef struct {
-     BdrvDirtyBitmap *bitmap;
-     uint64_t granularity;
--    DropState drop_state;
- } BDRVAllocTrackState;
- 
- static QemuOptsList runtime_opts = {
-@@ -137,8 +131,6 @@ static int track_open(BlockDriverState *bs, QDict *options, int flags,
-         goto fail;
-     }
- 
--    s->drop_state = DropNone;
--
- fail:
-     if (ret < 0) {
-         bdrv_graph_wrlock();
-@@ -289,18 +281,8 @@ track_child_perm(BlockDriverState *bs, BdrvChild *c, BdrvChildRole role,
-                  BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared,
-                  uint64_t *nperm, uint64_t *nshared)
- {
--    BDRVAllocTrackState *s = bs->opaque;
--
-     *nshared = BLK_PERM_ALL;
- 
--    /* in case we're currently dropping ourselves, claim to not use any
--     * permissions at all - which is fine, since from this point on we will
--     * never issue a read or write anymore */
--    if (s->drop_state == DropInProgress) {
--        *nperm = 0;
--        return;
--    }
--
-     if (role & BDRV_CHILD_DATA) {
-         *nperm = perm & DEFAULT_PERM_PASSTHROUGH;
-     } else {
-@@ -326,14 +308,6 @@ track_co_change_backing_file(BlockDriverState *bs, const char *backing_file,
-      * kinda fits better, but in the long-term, a special parameter would be
-      * nice (or done via qemu-server via upcoming blockdev-replace QMP command).
-      */
--    if (backing_file == NULL) {
--        BDRVAllocTrackState *s = bs->opaque;
--        bdrv_drained_begin(bs);
--        s->drop_state = DropInProgress;
--        bdrv_child_refresh_perms(bs, bs->file, &error_abort);
--        bdrv_drained_end(bs);
--    }
--
-     return 0;
- }
- 

debian/patches/pve/0043-alloc-track-fix-deadlock-during-drop.patch

@@ -0,0 +1,153 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Fiona Ebner <f.ebner@proxmox.com>
+Date: Thu, 6 Apr 2023 14:59:31 +0200
+Subject: [PATCH] alloc-track: fix deadlock during drop
+
+by replacing the block node directly after changing the backing file
+instead of rescheduling it.
+
+With changes in QEMU 8.0, calling bdrv_get_info (and bdrv_unref)
+during drop can lead to a deadlock when using iothread (only triggered
+with multiple disks, except during debugging where it also triggered
+with one disk sometimes):
+1. job_unref_locked acquires the AioContext and calls job->driver->free
+2. track_drop gets scheduled
+3. bdrv_graph_wrlock is called and polls which leads to track_drop being
+   called
+4. track_drop acquires the AioContext recursively
+5. bdrv_get_info is a wrapped coroutine (since 8.0) and thus polls for
+   bdrv_co_get_info. This releases the AioContext, but only once! The
+   documentation for the AIO_WAIT_WHILE macro states that the
+   AioContext lock needs to be acquired exactly once, but there does
+   not seem to be a way for track_drop to know if it acquired the lock
+   recursively or not (without adding further hacks).
+6. Because the AioContext is still held by the main thread once, it can't
+   be acquired before entering bdrv_co_get_info in co_schedule_bh_cb
+   which happens in the iothread
+
+When doing the operation in change_backing_file, the AioContext has
+already been acquired by the caller, so the issue with the recursive
+lock goes away.
+
+The comment explaining why delaying the replace is necessary is
+> we need to schedule this for later however, since when this function
+> is called, the blockjob modifying us is probably not done yet and
+> has a blocker on 'bs'
+
+However, there is no check for blockers in bdrv_replace_node. It would
+need to be done by us, the caller, with check_to_replace_node.
+Furthermore, the mirror job also does its call to bdrv_replace_node
+while there is an active blocker (inserted by mirror itself) and they
+use a specialized version to check for blockers instead of
+check_to_replace_node there. Alloc-track could also do something
+similar to check for other blockers, but it should be fine to rely on
+Proxmox VE that no other operation with the blockdev is going on.
+
+Mirror also drains the target before replacing the node, but the
+target can have other users. In case of alloc-track the file child
+should not be accessible by anybody else and so there can't be an
+in-flight operation for the file child when alloc-track is drained.
+
+The rescheduling based on refcounting is a hack and it doesn't seem to
+be necessary anymore. It's not clear what the original issue from the
+comment was. Testing with older builds with track_drop done directly
+without rescheduling also didn't lead to any noticable issue for me.
+
+One issue it might have been is the one fixed by b1e1af394d
+("block/stream: Drain subtree around graph change"), where
+block-stream had a use-after-free if the base node changed at an
+inconvenient time (which alloc-track's auto-drop does).
+
+It's also not possible to just not auto-replace the alloc-track. Not
+replacing it at all leads to other operations like block resize
+hanging, and there is no good way to replace it manually via QMP
+(there is x-blockdev-change, but it is experimental and doesn't
+implement the required operation yet). Also, it's just cleaner in
+general to not leave unnecessary block nodes lying around.
+
+Suggested-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ block/alloc-track.c | 54 ++++++++++++++-------------------------------
+ 1 file changed, 16 insertions(+), 38 deletions(-)
+
+diff --git a/block/alloc-track.c b/block/alloc-track.c
+index b75d7c6460..76da140a68 100644
+--- a/block/alloc-track.c
++++ b/block/alloc-track.c
+@@ -25,7 +25,6 @@
+ 
+ typedef enum DropState {
+     DropNone,
+-    DropRequested,
+     DropInProgress,
+ } DropState;
+ 
+@@ -268,37 +267,6 @@ static void track_child_perm(BlockDriverState *bs, BdrvChild *c,
+     }
+ }
+ 
+-static void track_drop(void *opaque)
+-{
+-    BlockDriverState *bs = (BlockDriverState*)opaque;
+-    BlockDriverState *file = bs->file->bs;
+-    BDRVAllocTrackState *s = bs->opaque;
+-
+-    assert(file);
+-
+-    /* we rely on the fact that we're not used anywhere else, so let's wait
+-     * until we're only used once - in the drive connected to the guest (and one
+-     * ref is held by bdrv_ref in track_change_backing_file) */
+-    if (bs->refcnt > 2) {
+-        aio_bh_schedule_oneshot(qemu_get_aio_context(), track_drop, opaque);
+-        return;
+-    }
+-    AioContext *aio_context = bdrv_get_aio_context(bs);
+-    aio_context_acquire(aio_context);
+-
+-    bdrv_drained_begin(bs);
+-
+-    /* now that we're drained, we can safely set 'DropInProgress' */
+-    s->drop_state = DropInProgress;
+-    bdrv_child_refresh_perms(bs, bs->file, &error_abort);
+-
+-    bdrv_replace_node(bs, file, &error_abort);
+-    bdrv_set_backing_hd(bs, NULL, &error_abort);
+-    bdrv_drained_end(bs);
+-    bdrv_unref(bs);
+-    aio_context_release(aio_context);
+-}
+-
+ static int track_change_backing_file(BlockDriverState *bs,
+                                      const char *backing_file,
+                                      const char *backing_fmt)
+@@ -308,13 +276,23 @@ static int track_change_backing_file(BlockDriverState *bs,
+         backing_file == NULL && backing_fmt == NULL)
+     {
+         /* backing file has been disconnected, there's no longer any use for
+-         * this node, so let's remove ourselves from the block graph - we need
+-         * to schedule this for later however, since when this function is
+-         * called, the blockjob modifying us is probably not done yet and has a
+-         * blocker on 'bs' */
+-        s->drop_state = DropRequested;
++         * this node, so let's remove ourselves from the block graph */
++        BlockDriverState *file = bs->file->bs;
++
++        /* Just to be sure, because bdrv_replace_node unrefs it */
+         bdrv_ref(bs);
+-        aio_bh_schedule_oneshot(qemu_get_aio_context(), track_drop, (void*)bs);
++        bdrv_drained_begin(bs);
++
++        /* now that we're drained, we can safely set 'DropInProgress' */
++        s->drop_state = DropInProgress;
++
++        bdrv_child_refresh_perms(bs, bs->file, &error_abort);
++
++        bdrv_replace_node(bs, file, &error_abort);
++        bdrv_set_backing_hd(bs, NULL, &error_abort);
++
++        bdrv_drained_end(bs);
++        bdrv_unref(bs);
+     }
+ 
+     return 0;

debian/patches/pve/0044-copy-before-write-allow-specifying-minimum-cluster-s.patch

@@ -1,133 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Fiona Ebner <f.ebner@proxmox.com>
-Date: Thu, 11 Apr 2024 11:29:26 +0200
-Subject: [PATCH] copy-before-write: allow specifying minimum cluster size
-
-Useful to make discard-source work in the context of backup fleecing
-when the fleecing image has a larger granularity than the backup
-target.
-
-Copy-before-write operations will use at least this granularity and in
-particular, discard requests to the source node will too. If the
-granularity is too small, they will just be aligned down in
-cbw_co_pdiscard_snapshot() and thus effectively ignored.
-
-The QAPI uses uint32 so the value will be non-negative, but still fit
-into a uint64_t.
-
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
----
- block/block-copy.c         | 17 +++++++++++++----
- block/copy-before-write.c  |  3 ++-
- include/block/block-copy.h |  1 +
- qapi/block-core.json       |  8 +++++++-
- 4 files changed, 23 insertions(+), 6 deletions(-)
-
-diff --git a/block/block-copy.c b/block/block-copy.c
-index cc618e4561..12d662e9d4 100644
---- a/block/block-copy.c
-+++ b/block/block-copy.c
-@@ -310,6 +310,7 @@ void block_copy_set_copy_opts(BlockCopyState *s, bool use_copy_range,
- }
- 
- static int64_t block_copy_calculate_cluster_size(BlockDriverState *target,
-+                                                 int64_t min_cluster_size,
-                                                  Error **errp)
- {
-     int ret;
-@@ -335,7 +336,7 @@ static int64_t block_copy_calculate_cluster_size(BlockDriverState *target,
-                     "used. If the actual block size of the target exceeds "
-                     "this default, the backup may be unusable",
-                     BLOCK_COPY_CLUSTER_SIZE_DEFAULT);
--        return BLOCK_COPY_CLUSTER_SIZE_DEFAULT;
-+        return MAX(min_cluster_size, BLOCK_COPY_CLUSTER_SIZE_DEFAULT);
-     } else if (ret < 0 && !target_does_cow) {
-         error_setg_errno(errp, -ret,
-             "Couldn't determine the cluster size of the target image, "
-@@ -345,16 +346,18 @@ static int64_t block_copy_calculate_cluster_size(BlockDriverState *target,
-         return ret;
-     } else if (ret < 0 && target_does_cow) {
-         /* Not fatal; just trudge on ahead. */
--        return BLOCK_COPY_CLUSTER_SIZE_DEFAULT;
-+        return MAX(min_cluster_size, BLOCK_COPY_CLUSTER_SIZE_DEFAULT);
-     }
- 
--    return MAX(BLOCK_COPY_CLUSTER_SIZE_DEFAULT, bdi.cluster_size);
-+    return MAX(min_cluster_size,
-+               MAX(BLOCK_COPY_CLUSTER_SIZE_DEFAULT, bdi.cluster_size));
- }
- 
- BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
-                                      BlockDriverState *copy_bitmap_bs,
-                                      const BdrvDirtyBitmap *bitmap,
-                                      bool discard_source,
-+                                     int64_t min_cluster_size,
-                                      Error **errp)
- {
-     ERRP_GUARD();
-@@ -365,7 +368,13 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
- 
-     GLOBAL_STATE_CODE();
- 
--    cluster_size = block_copy_calculate_cluster_size(target->bs, errp);
-+    if (min_cluster_size && !is_power_of_2(min_cluster_size)) {
-+        error_setg(errp, "min-cluster-size needs to be a power of 2");
-+        return NULL;
-+    }
-+
-+    cluster_size = block_copy_calculate_cluster_size(target->bs,
-+                                                     min_cluster_size, errp);
-     if (cluster_size < 0) {
-         return NULL;
-     }
-diff --git a/block/copy-before-write.c b/block/copy-before-write.c
-index 28f6a096cd..ef4e666303 100644
---- a/block/copy-before-write.c
-+++ b/block/copy-before-write.c
-@@ -478,7 +478,8 @@ static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
- 
-     s->discard_source = flags & BDRV_O_CBW_DISCARD_SOURCE;
-     s->bcs = block_copy_state_new(bs->file, s->target, bs, bitmap,
--                                  flags & BDRV_O_CBW_DISCARD_SOURCE, errp);
-+                                  flags & BDRV_O_CBW_DISCARD_SOURCE,
-+                                  opts->min_cluster_size, errp);
-     if (!s->bcs) {
-         error_prepend(errp, "Cannot create block-copy-state: ");
-         return -EINVAL;
-diff --git a/include/block/block-copy.h b/include/block/block-copy.h
-index bdc703bacd..77857c6c68 100644
---- a/include/block/block-copy.h
-+++ b/include/block/block-copy.h
-@@ -28,6 +28,7 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
-                                      BlockDriverState *copy_bitmap_bs,
-                                      const BdrvDirtyBitmap *bitmap,
-                                      bool discard_source,
-+                                     int64_t min_cluster_size,
-                                      Error **errp);
- 
- /* Function should be called prior any actual copy request */
-diff --git a/qapi/block-core.json b/qapi/block-core.json
-index 282e2e8a8c..9caf04cbe9 100644
---- a/qapi/block-core.json
-+++ b/qapi/block-core.json
-@@ -4926,12 +4926,18 @@
- #     @on-cbw-error parameter will decide how this failure is handled.
- #     Default 0.  (Since 7.1)
- #
-+# @min-cluster-size: Minimum size of blocks used by copy-before-write
-+#     operations.  Has to be a power of 2.  No effect if smaller than
-+#     the maximum of the target's cluster size and 64 KiB.  Default 0.
-+#     (Since 8.1)
-+#
- # Since: 6.2
- ##
- { 'struct': 'BlockdevOptionsCbw',
-   'base': 'BlockdevOptionsGenericFormat',
-   'data': { 'target': 'BlockdevRef', '*bitmap': 'BlockDirtyBitmap',
--            '*on-cbw-error': 'OnCbwError', '*cbw-timeout': 'uint32' } }
-+            '*on-cbw-error': 'OnCbwError', '*cbw-timeout': 'uint32',
-+            '*min-cluster-size': 'uint32' } }
- 
- ##
- # @BlockdevOptions:

debian/patches/pve/0044-migration-for-snapshots-hold-the-BQL-during-setup-ca.patch

@@ -0,0 +1,190 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Fiona Ebner <f.ebner@proxmox.com>
+Date: Fri, 5 May 2023 13:39:53 +0200
+Subject: [PATCH] migration: for snapshots, hold the BQL during setup callbacks
+
+In spirit, this is a partial revert of commit 9b09503752 ("migration:
+run setup callbacks out of big lock"), but only for the snapshot case.
+
+For snapshots, the bdrv_writev_vmstate() function is used during setup
+(in QIOChannelBlock backing the QEMUFile), but not holding the BQL
+while calling it could lead to an assertion failure. To understand
+how, first note the following:
+
+1. Generated coroutine wrappers for block layer functions spawn the
+coroutine and use AIO_WAIT_WHILE()/aio_poll() to wait for it.
+2. If the host OS switches threads at an inconvenient time, it can
+happen that a bottom half scheduled for the main thread's AioContext
+is executed as part of a vCPU thread's aio_poll().
+
+An example leading to the assertion failure is as follows:
+
+main thread:
+1. A snapshot-save QMP command gets issued.
+2. snapshot_save_job_bh() is scheduled.
+
+vCPU thread:
+3. aio_poll() for the main thread's AioContext is called (e.g. when
+the guest writes to a pflash device, as part of blk_pwrite which is a
+generated coroutine wrapper).
+4. snapshot_save_job_bh() is executed as part of aio_poll().
+3. qemu_savevm_state() is called.
+4. qemu_mutex_unlock_iothread() is called. Now
+qemu_get_current_aio_context() returns 0x0.
+5. bdrv_writev_vmstate() is executed during the usual savevm setup.
+But this function is a generated coroutine wrapper, so it uses
+AIO_WAIT_WHILE. There, the assertion
+assert(qemu_get_current_aio_context() == qemu_get_aio_context());
+will fail.
+
+To fix it, ensure that the BQL is held during setup. To avoid changing
+the behavior for migration too, introduce conditionals for the setup
+callbacks that need the BQL and only take the lock if it's not already
+held.
+
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ include/migration/register.h   |  2 +-
+ migration/block-dirty-bitmap.c | 15 ++++++++++++---
+ migration/block.c              | 15 ++++++++++++---
+ migration/ram.c                | 16 +++++++++++++---
+ migration/savevm.c             |  2 --
+ 5 files changed, 38 insertions(+), 12 deletions(-)
+
+diff --git a/include/migration/register.h b/include/migration/register.h
+index 90914f32f5..c728fd9120 100644
+--- a/include/migration/register.h
++++ b/include/migration/register.h
+@@ -43,9 +43,9 @@ typedef struct SaveVMHandlers {
+      * by other locks.
+      */
+     int (*save_live_iterate)(QEMUFile *f, void *opaque);
++    int (*save_setup)(QEMUFile *f, void *opaque);
+ 
+     /* This runs outside the iothread lock!  */
+-    int (*save_setup)(QEMUFile *f, void *opaque);
+     /* Note for save_live_pending:
+      * must_precopy:
+      * - must be migrated in precopy or in stopped state
+diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c
+index 285dd1d148..f7ee5a74d9 100644
+--- a/migration/block-dirty-bitmap.c
++++ b/migration/block-dirty-bitmap.c
+@@ -1219,10 +1219,17 @@ static int dirty_bitmap_save_setup(QEMUFile *f, void *opaque)
+ {
+     DBMSaveState *s = &((DBMState *)opaque)->save;
+     SaveBitmapState *dbms = NULL;
++    bool release_lock = false;
+ 
+-    qemu_mutex_lock_iothread();
++    /* For snapshots, the BQL is held during setup. */
++    if (!qemu_mutex_iothread_locked()) {
++        qemu_mutex_lock_iothread();
++        release_lock = true;
++    }
+     if (init_dirty_bitmap_migration(s) < 0) {
+-        qemu_mutex_unlock_iothread();
++        if (release_lock) {
++            qemu_mutex_unlock_iothread();
++        }
+         return -1;
+     }
+ 
+@@ -1230,7 +1237,9 @@ static int dirty_bitmap_save_setup(QEMUFile *f, void *opaque)
+         send_bitmap_start(f, s, dbms);
+     }
+     qemu_put_bitmap_flags(f, DIRTY_BITMAP_MIG_FLAG_EOS);
+-    qemu_mutex_unlock_iothread();
++    if (release_lock) {
++        qemu_mutex_unlock_iothread();
++    }
+     return 0;
+ }
+ 
+diff --git a/migration/block.c b/migration/block.c
+index 86c2256a2b..8423e0c9f9 100644
+--- a/migration/block.c
++++ b/migration/block.c
+@@ -725,21 +725,30 @@ static void block_migration_cleanup(void *opaque)
+ static int block_save_setup(QEMUFile *f, void *opaque)
+ {
+     int ret;
++    bool release_lock = false;
+ 
+     trace_migration_block_save("setup", block_mig_state.submitted,
+                                block_mig_state.transferred);
+ 
+-    qemu_mutex_lock_iothread();
++    /* For snapshots, the BQL is held during setup. */
++    if (!qemu_mutex_iothread_locked()) {
++        qemu_mutex_lock_iothread();
++        release_lock = true;
++    }
+     ret = init_blk_migration(f);
+     if (ret < 0) {
+-        qemu_mutex_unlock_iothread();
++        if (release_lock) {
++            qemu_mutex_unlock_iothread();
++        }
+         return ret;
+     }
+ 
+     /* start track dirty blocks */
+     ret = set_dirty_tracking();
+ 
+-    qemu_mutex_unlock_iothread();
++    if (release_lock) {
++        qemu_mutex_unlock_iothread();
++    }
+ 
+     if (ret) {
+         return ret;
+diff --git a/migration/ram.c b/migration/ram.c
+index 6e1514f69f..6a1aec7031 100644
+--- a/migration/ram.c
++++ b/migration/ram.c
+@@ -2896,8 +2896,16 @@ static void migration_bitmap_clear_discarded_pages(RAMState *rs)
+ 
+ static void ram_init_bitmaps(RAMState *rs)
+ {
+-    /* For memory_global_dirty_log_start below.  */
+-    qemu_mutex_lock_iothread();
++    bool release_lock = false;
++
++    /*
++     * For memory_global_dirty_log_start below.
++     * For snapshots, the BQL is held during setup.
++     */
++    if (!qemu_mutex_iothread_locked()) {
++        qemu_mutex_lock_iothread();
++        release_lock = true;
++    }
+     qemu_mutex_lock_ramlist();
+ 
+     WITH_RCU_READ_LOCK_GUARD() {
+@@ -2909,7 +2917,9 @@ static void ram_init_bitmaps(RAMState *rs)
+         }
+     }
+     qemu_mutex_unlock_ramlist();
+-    qemu_mutex_unlock_iothread();
++    if (release_lock) {
++        qemu_mutex_unlock_iothread();
++    }
+ 
+     /*
+      * After an eventual first bitmap sync, fixup the initial bitmap
+diff --git a/migration/savevm.c b/migration/savevm.c
+index d60c4f487a..3c015722f7 100644
+--- a/migration/savevm.c
++++ b/migration/savevm.c
+@@ -1625,10 +1625,8 @@ static int qemu_savevm_state(QEMUFile *f, Error **errp)
+     reset_vfio_bytes_transferred();
+     ms->to_dst_file = f;
+ 
+-    qemu_mutex_unlock_iothread();
+     qemu_savevm_state_header(f);
+     qemu_savevm_state_setup(f);
+-    qemu_mutex_lock_iothread();
+ 
+     while (qemu_file_get_error(f) == 0) {
+         if (qemu_savevm_state_iterate(f, false) > 0) {

debian/patches/pve/0045-backup-add-minimum-cluster-size-to-performance-optio.patch

@@ -1,106 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Fiona Ebner <f.ebner@proxmox.com>
-Date: Thu, 11 Apr 2024 11:29:27 +0200
-Subject: [PATCH] backup: add minimum cluster size to performance options
-
-Useful to make discard-source work in the context of backup fleecing
-when the fleecing image has a larger granularity than the backup
-target.
-
-Backup/block-copy will use at least this granularity for copy operations
-and in particular, discard requests to the backup source will too. If
-the granularity is too small, they will just be aligned down in
-cbw_co_pdiscard_snapshot() and thus effectively ignored.
-
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
----
- block/backup.c            | 2 +-
- block/copy-before-write.c | 2 ++
- block/copy-before-write.h | 1 +
- blockdev.c                | 3 +++
- qapi/block-core.json      | 9 +++++++--
- 5 files changed, 14 insertions(+), 3 deletions(-)
-
-diff --git a/block/backup.c b/block/backup.c
-index 1963e47ab9..fe69723ada 100644
---- a/block/backup.c
-+++ b/block/backup.c
-@@ -434,7 +434,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
-     }
- 
-     cbw = bdrv_cbw_append(bs, target, filter_node_name, discard_source,
--                          &bcs, errp);
-+                          perf->min_cluster_size, &bcs, errp);
-     if (!cbw) {
-         goto error;
-     }
-diff --git a/block/copy-before-write.c b/block/copy-before-write.c
-index ef4e666303..adb27649a8 100644
---- a/block/copy-before-write.c
-+++ b/block/copy-before-write.c
-@@ -547,6 +547,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
-                                   BlockDriverState *target,
-                                   const char *filter_node_name,
-                                   bool discard_source,
-+                                  int64_t min_cluster_size,
-                                   BlockCopyState **bcs,
-                                   Error **errp)
- {
-@@ -565,6 +566,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
-     }
-     qdict_put_str(opts, "file", bdrv_get_node_name(source));
-     qdict_put_str(opts, "target", bdrv_get_node_name(target));
-+    qdict_put_int(opts, "min-cluster-size", min_cluster_size);
- 
-     top = bdrv_insert_node(source, opts, flags, errp);
-     if (!top) {
-diff --git a/block/copy-before-write.h b/block/copy-before-write.h
-index 01af0cd3c4..dc6cafe7fa 100644
---- a/block/copy-before-write.h
-+++ b/block/copy-before-write.h
-@@ -40,6 +40,7 @@ BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
-                                   BlockDriverState *target,
-                                   const char *filter_node_name,
-                                   bool discard_source,
-+                                  int64_t min_cluster_size,
-                                   BlockCopyState **bcs,
-                                   Error **errp);
- void bdrv_cbw_drop(BlockDriverState *bs);
-diff --git a/blockdev.c b/blockdev.c
-index 1054a69279..cbe224387b 100644
---- a/blockdev.c
-+++ b/blockdev.c
-@@ -2654,6 +2654,9 @@ static BlockJob *do_backup_common(BackupCommon *backup,
-         if (backup->x_perf->has_max_chunk) {
-             perf.max_chunk = backup->x_perf->max_chunk;
-         }
-+        if (backup->x_perf->has_min_cluster_size) {
-+            perf.min_cluster_size = backup->x_perf->min_cluster_size;
-+        }
-     }
- 
-     if ((backup->sync == MIRROR_SYNC_MODE_BITMAP) ||
-diff --git a/qapi/block-core.json b/qapi/block-core.json
-index 9caf04cbe9..df934647ed 100644
---- a/qapi/block-core.json
-+++ b/qapi/block-core.json
-@@ -1790,11 +1790,16 @@
- #     it should not be less than job cluster size which is calculated
- #     as maximum of target image cluster size and 64k.  Default 0.
- #
-+# @min-cluster-size: Minimum size of blocks used by copy-before-write
-+#     and background copy operations.  Has to be a power of 2.  No
-+#     effect if smaller than the maximum of the target's cluster size
-+#     and 64 KiB.  Default 0. (Since 8.1)
-+#
- # Since: 6.0
- ##
- { 'struct': 'BackupPerf',
--  'data': { '*use-copy-range': 'bool',
--            '*max-workers': 'int', '*max-chunk': 'int64' } }
-+  'data': { '*use-copy-range': 'bool', '*max-workers': 'int',
-+            '*max-chunk': 'int64', '*min-cluster-size': 'uint32' } }
- 
- ##
- # @BackupCommon: