mirror_qemu/backends
Steve Sistare c8a7fc5179 migration: simplify blockers
Modify migrate_add_blocker and migrate_del_blocker to take an Error **
reason.  This allows migration to own the Error object, so that if
an error occurs in migrate_add_blocker, migration code can free the Error
and clear the client handle, simplifying client code.  It also simplifies
the migrate_del_blocker call site.

In addition, this is a pre-requisite for a proposed future patch that would
add a mode argument to migration requests to support live update, and
maintain a list of blockers for each mode.  A blocker may apply to a single
mode or to multiple modes, and passing Error** will allow one Error object
to be registered for multiple modes.

No functional change.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Tested-by: Michael Galaxy <mgalaxy@akamai.com>
Reviewed-by: Michael Galaxy <mgalaxy@akamai.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <1697634216-84215-1-git-send-email-steven.sistare@oracle.com>
2023-10-20 08:51:41 +02:00
..
tpm migration: simplify blockers 2023-10-20 08:51:41 +02:00
Kconfig tpm: Move backend code under the 'backends/' directory 2020-06-19 07:25:55 -04:00
confidential-guest-support.c confidential guest support: Introduce new confidential guest support class 2021-02-08 16:57:37 +11:00
cryptodev-builtin.c cryptodev: Use CryptoDevBackendOpInfo for operation 2023-03-07 12:38:59 -05:00
cryptodev-hmp-cmds.c hmp: add cryptodev info command 2023-03-07 12:38:59 -05:00
cryptodev-lkcf.c cryptodev: Use CryptoDevBackendOpInfo for operation 2023-03-07 12:38:59 -05:00
cryptodev-vhost-user.c cryptodev-vhost-user: add asymmetric crypto support 2023-06-23 02:54:44 -04:00
cryptodev-vhost.c cryptodev: Introduce cryptodev.json 2023-03-07 12:38:59 -05:00
cryptodev.c throttle: use enum ThrottleDirection instead of bool is_write 2023-08-29 10:49:24 +02:00
dbus-vmstate.c dbus-vmstate: Restrict error checks to registered proxies in dbus_get_proxies 2022-08-18 10:35:44 +04:00
dbus-vmstate1.xml docs: move D-Bus VMState documentation to source XML 2021-12-21 10:50:21 +04:00
hostmem-epc.c Fix non-first inclusions of qemu/osdep.h 2023-02-08 07:28:05 +01:00
hostmem-file.c backends/hostmem-file: Add "rom" property to support VM templating with R/O files 2023-09-19 10:23:21 +02:00
hostmem-memfd.c hostmem: Wire up RAM_NORESERVE via "reserve" property 2021-06-15 20:27:38 +02:00
hostmem-ram.c hostmem: Wire up RAM_NORESERVE via "reserve" property 2021-06-15 20:27:38 +02:00
hostmem.c hostmem: Honor multiple preferred nodes if possible 2022-12-28 14:59:55 +01:00
meson.build meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
rng-builtin.c replay: rng-builtin support 2021-02-08 15:15:32 +01:00
rng-egd.c backends: Improve error messages when property can no longer be set 2022-10-27 07:56:56 +02:00
rng-random.c backends: Improve error messages when property can no longer be set 2022-10-27 07:56:56 +02:00
rng.c error: Drop superfluous #include "qapi/qmp/qerror.h" 2023-02-23 13:56:14 +01:00
trace-events docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vhost-user.c backends/vhost-user: remove the ioeventfd check 2023-03-02 03:10:47 -05:00