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envelope-from=steven.sistare@oracle.com; helo=mx0a-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Do not wake a suspended guest during bg_migration, and restore the prior state at finish rather than unconditionally running. Allow the additional state transitions that occur because bg migration forces RUN_STATE_PAUSED to save the precopy device state. Signed-off-by: Steve Sistare Reviewed-by: Fabiano Rosas --- migration/migration.c | 7 +------ system/runstate.c | 3 +++ 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index 29ed901..49ec836 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -3394,7 +3394,7 @@ static void bg_migration_vm_start_bh(void *opaque) qemu_bh_delete(s->vm_start_bh); s->vm_start_bh = NULL; - vm_start(); + vm_resume(s->vm_old_state); migration_downtime_end(s); } @@ -3466,11 +3466,6 @@ static void *bg_migration_thread(void *opaque) qemu_mutex_lock_iothread(); - /* - * If VM is currently in suspended state, then, to make a valid runstate - * transition in vm_stop_force_state() we need to wakeup it up. - */ - qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, NULL); s->vm_old_state = runstate_get(); global_state_store(); diff --git a/system/runstate.c b/system/runstate.c index f1d4bc7..68cc485 100644 --- a/system/runstate.c +++ b/system/runstate.c @@ -112,6 +112,7 @@ static const RunStateTransition runstate_transitions_def[] = { { RUN_STATE_PAUSED, RUN_STATE_COLO}, { RUN_STATE_PAUSED, RUN_STATE_SAVE_VM}, { RUN_STATE_PAUSED, RUN_STATE_RESTORE_VM}, + { RUN_STATE_PAUSED, RUN_STATE_SUSPENDED}, { RUN_STATE_POSTMIGRATE, RUN_STATE_RUNNING }, { RUN_STATE_POSTMIGRATE, RUN_STATE_FINISH_MIGRATE }, @@ -171,6 +172,8 @@ static const RunStateTransition runstate_transitions_def[] = { { RUN_STATE_SUSPENDED, RUN_STATE_COLO}, { RUN_STATE_SUSPENDED, RUN_STATE_SAVE_VM }, { RUN_STATE_SUSPENDED, RUN_STATE_RESTORE_VM }, + { RUN_STATE_SUSPENDED, RUN_STATE_PAUSED }, + { RUN_STATE_SUSPENDED, RUN_STATE_SHUTDOWN }, { RUN_STATE_WATCHDOG, RUN_STATE_RUNNING }, { RUN_STATE_WATCHDOG, RUN_STATE_FINISH_MIGRATE },