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[Qemu-block] [PATCH v7 10/16] migration: add is_active_iterate handler
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-block] [PATCH v7 10/16] migration: add is_active_iterate handler |
Date: |
Mon, 10 Jul 2017 19:30:23 +0300 |
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 <address@hidden>
Reviewed-by: Juan Quintela <address@hidden>
---
include/migration/register.h | 1 +
migration/savevm.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/include/migration/register.h b/include/migration/register.h
index ebf68992dd..3655341544 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 0ab036489a..f03ee02f67 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -1024,6 +1024,11 @@ 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
--
2.11.1
- [Qemu-block] [PATCH v7 15/16] iotests: add dirty bitmap migration test, (continued)
- [Qemu-block] [PATCH v7 15/16] iotests: add dirty bitmap migration test, Vladimir Sementsov-Ogievskiy, 2017/07/10
- [Qemu-block] [PATCH v7 03/16] migration: split common postcopy out of ram postcopy, Vladimir Sementsov-Ogievskiy, 2017/07/10
- [Qemu-block] [PATCH v7 14/16] iotests: add default node-name, Vladimir Sementsov-Ogievskiy, 2017/07/10
- [Qemu-block] [PATCH v7 07/16] block/dirty-bitmap: add bdrv_dirty_bitmap_release_successor, Vladimir Sementsov-Ogievskiy, 2017/07/10
- [Qemu-block] [PATCH v7 01/16] migration: add has_postcopy savevm handler, Vladimir Sementsov-Ogievskiy, 2017/07/10
- [Qemu-block] [PATCH v7 05/16] block/dirty-bitmap: add bdrv_dirty_bitmap_enable_successor(), Vladimir Sementsov-Ogievskiy, 2017/07/10
- [Qemu-block] [PATCH v7 11/16] block/dirty-bitmap: add bdrv_dirty_bitmap_set_frozen, Vladimir Sementsov-Ogievskiy, 2017/07/10
- [Qemu-block] [PATCH v7 09/16] migration/qemu-file: add qemu_put_counted_string(), Vladimir Sementsov-Ogievskiy, 2017/07/10
- [Qemu-block] [PATCH v7 10/16] migration: add is_active_iterate handler,
Vladimir Sementsov-Ogievskiy <=
- [Qemu-block] [PATCH v7 04/16] migration: introduce postcopy-only pending, Vladimir Sementsov-Ogievskiy, 2017/07/10
- [Qemu-block] [PATCH v7 12/16] migration: add postcopy migration of dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2017/07/10