qemu/hw/vfio
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
..
amd-xgbe.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
ap.c vfio/ap: Remove pointless apdev variable 2023-10-18 10:10:49 +02:00
calxeda-xgmac.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
ccw.c vfio/ccw: Use vfio_[attach/detach]_device 2023-10-18 10:10:49 +02:00
common.c migration: simplify blockers 2023-10-20 08:51:41 +02:00
container.c vfio/common: Move legacy VFIO backend code into separate container.c 2023-10-18 10:10:49 +02:00
display.c hw/vfio: add ramfb migration support 2023-10-18 10:10:49 +02:00
helpers.c vfio/common: Move IOMMU agnostic helpers to a separate file 2023-10-18 10:10:49 +02:00
igd.c *: Add missing includes of qemu/error-report.h 2023-03-22 15:06:57 +00:00
Kconfig hw/vfio: Move the IGD quirk code to a separate file 2020-02-06 11:55:42 -07:00
meson.build vfio/common: Move legacy VFIO backend code into separate container.c 2023-10-18 10:10:49 +02:00
migration.c migration: simplify blockers 2023-10-20 08:51:41 +02:00
pci-quirks.c spapr: Remove support for NVIDIA V100 GPU with NVLink2 2023-09-18 07:25:28 -03:00
pci.c hw/vfio: add ramfb migration support 2023-10-18 10:10:49 +02:00
pci.h hw/vfio: add ramfb migration support 2023-10-18 10:10:49 +02:00
platform.c vfio/platform: Use vfio_[attach/detach]_device 2023-10-18 10:10:49 +02:00
spapr.c Replace qemu_real_host_page variables with inlined functions 2022-04-06 10:50:38 +02:00
trace-events vfio/platform: Use vfio_[attach/detach]_device 2023-10-18 10:10:49 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00