[Qemu-devel] [PATCH 6/7] migration: allow cancel to unpause

[Dr. David Alan Gilbert (git)]

From: "Dr. David Alan Gilbert" <address@hidden>

If a migration_cancel is issued during the new paused state,
kick the pause_sem to get to unpause so it can cancel.

Signed-off-by: Dr. David Alan Gilbert <address@hidden>
---
 migration/migration.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/migration/migration.c b/migration/migration.c
index be03e8ff0b..fa42918270 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1108,6 +1108,10 @@ static void migrate_fd_cancel(MigrationState *s)
         if (!migration_is_setup_or_active(old_state)) {
             break;
         }
+        /* If the migration is paused, kick it out of the pause */
+        if (old_state == MIGRATION_STATUS_PAUSE_BEFORE_DEVICE) {
+            qemu_sem_post(&s->pause_sem);
+        }
         migrate_set_state(&s->state, old_state, MIGRATION_STATUS_CANCELLING);
     } while (s->state != MIGRATION_STATUS_CANCELLING);
 
-- 
2.13.6