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migration: Cleanup postcopy_preempt_setup() 

Since we just dropped the only case where postcopy_preempt_setup() can
return an error, it doesn't need a retval anymore because it never fails.
Move the preempt check to the caller, preparing it to be used elsewhere to
do nothing but as simple as kicking the async connection.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
master
Peter Xu 2023-02-08 15:28:11 -05:00 committed by Juan Quintela
parent d6f74fd12e
commit fc063a7b8a
3 changed files with 4 additions and 14 deletions
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8
migration/migration.c
View File

@ -4347,12 +4347,8 @@ void migrate_fd_connect(MigrationState *s, Error *error_in)
}
/* This needs to be done before resuming a postcopy */
if (postcopy_preempt_setup(s, &local_err)) {
error_report_err(local_err);
migrate_set_state(&s->state, MIGRATION_STATUS_SETUP,
MIGRATION_STATUS_FAILED);
migrate_fd_cleanup(s);
return;
if (migrate_postcopy_preempt()) {
postcopy_preempt_setup(s);
}
if (resume) {

8
migration/postcopy-ram.c
View File

@ -1629,16 +1629,10 @@ int postcopy_preempt_wait_channel(MigrationState *s)
return s->postcopy_qemufile_src ? 0 : -1;
}
int postcopy_preempt_setup(MigrationState *s, Error **errp)
void postcopy_preempt_setup(MigrationState *s)
{
if (!migrate_postcopy_preempt()) {
return 0;
}
/* Kick an async task to connect */
socket_send_channel_create(postcopy_preempt_send_channel_new, s);
return 0;
}
static void postcopy_pause_ram_fast_load(MigrationIncomingState *mis)

2
migration/postcopy-ram.h
View File

@ -191,7 +191,7 @@ enum PostcopyChannels {
};
void postcopy_preempt_new_channel(MigrationIncomingState *mis, QEMUFile *file);
int postcopy_preempt_setup(MigrationState *s, Error **errp);
void postcopy_preempt_setup(MigrationState *s);
int postcopy_preempt_wait_channel(MigrationState *s);
#endif