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migration: stop vm for cpr

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When migration for cpr is initiated, stop the vm and set state
RUN_STATE_FINISH_MIGRATE before ram is saved.  This eliminates the
possibility of ram and device state being out of sync, and guarantees
that a guest in the suspended state remains suspended, because qmp_cont
rejects a cont command in the RUN_STATE_FINISH_MIGRATE state.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/1708622920-68779-11-git-send-email-steven.sistare@oracle.com
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Steve Sistare 2024-02-22 09:28:36 -08:00 • committed by Peter Xu
parent 4af667f87c
commit 9867d4ddd0
3 changed files with 32 additions and 22 deletions
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1
include/migration/misc.h
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@ -60,6 +60,7 @@ void migration_object_init(void);
void migration_shutdown(void);
bool migration_is_idle(void);
bool migration_is_active(MigrationState *);
bool migrate_mode_is_cpr(MigrationState *);
typedef enum MigrationEventType {
MIG_EVENT_PRECOPY_SETUP,