|
 |
459f93 |
From 9c2fd182a02d64004e30900c52e3fcdb550de0bd Mon Sep 17 00:00:00 2001
|
|
|
459f93 |
Message-Id: <9c2fd182a02d64004e30900c52e3fcdb550de0bd@dist-git>
|
|
|
459f93 |
From: Jiri Denemark <jdenemar@redhat.com>
|
|
|
459f93 |
Date: Wed, 22 Jun 2022 16:35:50 +0200
|
|
|
459f93 |
Subject: [PATCH] Add VIR_MIGRATE_ZEROCOPY flag
|
|
|
459f93 |
MIME-Version: 1.0
|
|
|
459f93 |
Content-Type: text/plain; charset=UTF-8
|
|
|
459f93 |
Content-Transfer-Encoding: 8bit
|
|
|
459f93 |
|
|
|
459f93 |
The flag can be used to enable zero-copy mechanism for migrating memory
|
|
|
459f93 |
pages.
|
|
|
459f93 |
|
|
|
459f93 |
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
|
|
|
459f93 |
Reviewed-by: Ján Tomko <jtomko@redhat.com>
|
|
|
459f93 |
(cherry picked from commit 8744beecb36600e773c8a8c4823db2bf4b3e262d)
|
|
|
459f93 |
|
|
|
459f93 |
https://bugzilla.redhat.com/show_bug.cgi?id=2089433
|
|
|
459f93 |
|
|
|
459f93 |
Conflicts:
|
|
|
459f93 |
include/libvirt/libvirt-domain.h
|
|
|
459f93 |
- post-copy recovery not backported
|
|
|
459f93 |
|
|
|
459f93 |
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
|
|
|
459f93 |
---
|
|
|
459f93 |
include/libvirt/libvirt-domain.h | 8 ++++++++
|
|
|
459f93 |
1 file changed, 8 insertions(+)
|
|
|
459f93 |
|
|
|
459f93 |
diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
|
|
|
459f93 |
index 5f0a9b7572..792973ce2d 100644
|
|
|
459f93 |
--- a/include/libvirt/libvirt-domain.h
|
|
|
459f93 |
+++ b/include/libvirt/libvirt-domain.h
|
|
|
459f93 |
@@ -860,6 +860,14 @@ typedef enum {
|
|
|
459f93 |
*/
|
|
|
459f93 |
VIR_MIGRATE_NON_SHARED_SYNCHRONOUS_WRITES = (1 << 18),
|
|
|
459f93 |
|
|
|
459f93 |
+ /* Use zero-copy mechanism for migrating memory pages. For QEMU/KVM this
|
|
|
459f93 |
+ * means QEMU will be temporarily allowed to lock all guest pages in host's
|
|
|
459f93 |
+ * memory, although only those that are queued for transfer will be locked
|
|
|
459f93 |
+ * at the same time.
|
|
|
459f93 |
+ *
|
|
|
459f93 |
+ * Since: 8.5.0
|
|
|
459f93 |
+ */
|
|
|
459f93 |
+ VIR_MIGRATE_ZEROCOPY = (1 << 20),
|
|
|
459f93 |
} virDomainMigrateFlags;
|
|
|
459f93 |
|
|
|
459f93 |
|
|
|
459f93 |
--
|
|
|
459f93 |
2.35.1
|
|
|
459f93 |
|