Message ID | 20171030163309.75770-10-vsementsov@virtuozzo.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On 10/30/2017 12:33 PM, Vladimir Sementsov-Ogievskiy wrote: > Only-postcopy savevm states (dirty-bitmap) don't need live iteration, so > to disable them and stop transporting empty sections there is a new > savevm handler. > > Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> > Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com>
diff --git a/include/migration/register.h b/include/migration/register.h index 9436a87678..cafbeb64b5 100644 --- a/include/migration/register.h +++ b/include/migration/register.h @@ -25,6 +25,7 @@ typedef struct SaveVMHandlers { /* This runs both outside and inside the iothread lock. */ bool (*is_active)(void *opaque); bool (*has_postcopy)(void *opaque); + bool (*is_active_iterate)(void *opaque); /* This runs outside the iothread lock in the migration case, and * within the lock in the savevm case. The callback had better only diff --git a/migration/savevm.c b/migration/savevm.c index f6b62cb202..9bbfb3fa1b 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -1026,6 +1026,11 @@ int qemu_savevm_state_iterate(QEMUFile *f, bool postcopy) continue; } } + if (se->ops && se->ops->is_active_iterate) { + if (!se->ops->is_active_iterate(se->opaque)) { + continue; + } + } /* * In the postcopy phase, any device that doesn't know how to * do postcopy should have saved it's state in the _complete