qemu/include/migration
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
..
blocker.h migration: simplify blockers 2023-10-20 08:51:41 +02:00
colo.h migration: process_incoming_migration_co(): move colo part to colo 2023-05-18 18:40:51 +02:00
cpu.h Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
failover.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
global_state.h migration: never fail in global_state_store() 2023-06-02 01:03:19 +02:00
misc.h migration/ram: Expose ramblock_is_ignored() as migrate_ram_is_ignored() 2023-07-12 09:25:37 +02:00
qemu-file-types.h migration: Move rate_limit_max and rate_limit_used to migration_stats 2023-05-18 18:40:51 +02:00
register.h migration: hold the BQL during setup 2023-10-17 09:25:13 +02:00
snapshot.h migration: introduce a delete_snapshot wrapper 2021-02-08 11:19:51 +00:00
vmstate.h migration/vmstate: Introduce vmstate_save_state_with_err 2023-10-04 10:54:40 +02:00