diff mbox

[01/17] QAPI: introduce migration capability unix_page_flipping

Message ID 1385719584-21114-2-git-send-email-lilei@linux.vnet.ibm.com
State New
Headers show

Commit Message

Lei Li Nov. 29, 2013, 10:06 a.m. UTC 
Introduce unix_page_flipping to MigrationCapability for
localhost migration.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com>
---
 qapi-schema.json |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/qapi-schema.json b/qapi-schema.json
index 83fa485..b290a0f 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -685,10 +685,18 @@ 
 # @auto-converge: If enabled, QEMU will automatically throttle down the guest
 #          to speed up convergence of RAM migration. (since 1.6)
 #
+# @unix-page-flipping: If enabled, QEMU can optimize migration when the
+#          destination is a QEMU process that runs on the same host as
+#          the source (as is the case for live upgrade).  If the migration
+#          transport is a Unix socket, QEMU will flip RAM pages directly to
+#          the destination, so that memory is only allocated twice for the
+#          source and destination processes. Disabled by default. (since 1.8)
+#
 # Since: 1.2
 ##
 { 'enum': 'MigrationCapability',
-  'data': ['xbzrle', 'x-rdma-pin-all', 'auto-converge', 'zero-blocks'] }
+  'data': ['xbzrle', 'x-rdma-pin-all', 'auto-converge', 'zero-blocks',
+           'unix-page-flipping'] }
 
 ##
 # @MigrationCapabilityStatus