qemu/stubs/colo.c
Vladimir Sementsov-Ogievskiy 51e47cf860 build: move COLO under CONFIG_REPLICATION
We don't allow to use x-colo capability when replication is not
configured. So, no reason to build COLO when replication is disabled,
it's unusable in this case.

Note also that the check in migrate_caps_check() is not the only
restriction: some functions in migration/colo.c will just abort if
called with not defined CONFIG_REPLICATION, for example:

    migration_iteration_finish()
       case MIGRATION_STATUS_COLO:
           migrate_start_colo_process()
               colo_process_checkpoint()
                   abort()

It could probably make sense to have possibility to enable COLO without
REPLICATION, but this requires deeper audit of colo & replication code,
which may be done later if needed.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Acked-by: Dr. David Alan Gilbert <dave@treblig.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20230428194928.1426370-4-vsementsov@yandex-team.ru>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2023-05-10 18:48:11 +02:00

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C

#include "qemu/osdep.h"
#include "qemu/notify.h"
#include "net/colo-compare.h"
#include "migration/colo.h"
#include "migration/migration.h"
#include "qemu/error-report.h"
#include "qapi/qapi-commands-migration.h"
void colo_shutdown(void)
{
}
void *colo_process_incoming_thread(void *opaque)
{
error_report("Impossible happend: trying to start COLO thread when COLO "
"module is not built in");
abort();
}
void colo_checkpoint_delay_set(void)
{
}
void migrate_start_colo_process(MigrationState *s)
{
error_report("Impossible happend: trying to start COLO when COLO "
"module is not built in");
abort();
}
bool migration_in_colo_state(void)
{
return false;
}
bool migration_incoming_in_colo_state(void)
{
return false;
}