vitalif
/
mirror_qemu
mirror of https://github.com/proxmox/mirror_qemu
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
mirror_qemu/hw/virtio
History
Paolo Bonzini e49a661840 virtio: always use handle_aio_output if registered 
Commit ad07cd6 ("virtio-scsi: always use dataplane path if ioeventfd is
active", 2016-10-30) and 9ffe337 ("virtio-blk: always use dataplane
path if ioeventfd is active", 2016-10-30) broke the virtio 1.0
indirect access registers.

The indirect access registers bypass the ioeventfd, so that virtio-blk
and virtio-scsi now repeatedly try to initialize dataplane instead of
triggering the guest->host EventNotifier.  Detect the situation by
checking vq->handle_aio_output; if it is not NULL, trigger the
EventNotifier, which is how the device expects to get notifications
and in fact the only thread-safe manner to deliver them.

Fixes: ad07cd6
Fixes: 9ffe337
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
 		2017-03-22 17:56:00 +02:00
..
Makefile.objs stubs: move vhost stubs to stubs/vhost.o 2017-01-16 17:52:35 +01:00
trace-events balloon: Don't balloon roms 2017-01-10 07:02:52 +02:00
vhost-backend.c vhost_net: device IOTLB support 2017-01-18 22:59:53 +02:00
vhost-stub.c stubs: move vhost stubs to stubs/vhost.o 2017-01-16 17:52:35 +01:00
vhost-user.c vhost-user: Add MTU protocol feature and op 2017-01-10 07:02:53 +02:00
vhost-vsock.c virtio: cleanup VMSTATE_VIRTIO_DEVICE 2016-10-10 02:21:43 +03:00
vhost.c vhost: skip ROM sections 2017-02-01 03:37:18 +02:00
virtio-balloon.c balloon: Don't balloon roms 2017-01-10 07:02:52 +02:00
virtio-bus.c virtio: Fix error handling in virtio_bus_device_plugged 2017-03-22 17:54:32 +02:00
virtio-crypto-pci.c virtio-crypto-pci: tag virtio-crypto device hot pluggable 2017-01-10 07:02:52 +02:00
virtio-crypto.c hw: Fix typos found by codespell 2017-01-24 23:26:52 +03:00
virtio-mmio.c virtio-mmio: switch to linux headers 2017-01-18 22:59:53 +02:00
virtio-pci.c hw/virtio: fix Power Management Control Register for PCI Express virtio devices 2017-03-16 01:46:41 +02:00
virtio-pci.h hw/virtio: fix Power Management Control Register for PCI Express virtio devices 2017-03-16 01:46:41 +02:00
virtio-rng.c virtio: cleanup VMSTATE_VIRTIO_DEVICE 2016-10-10 02:21:43 +03:00
virtio.c virtio: always use handle_aio_output if registered 2017-03-22 17:56:00 +02:00