qapi: add dirty-bitmaps migration capability

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 20180313180320.339796-7-vsementsov@virtuozzo.com

diff --git a/migration/migration.c b/migration/migration.c
index 90307f8ab51fde3674f195f01737ea87ec9c898e..e0aff5c814c4b25e6f548ba1cd4c0af22ade307a 100644 (file)
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1565,6 +1565,15 @@ int migrate_decompress_threads(void)
     return s->parameters.decompress_threads;
 }
 
+bool migrate_dirty_bitmaps(void)
+{
+    MigrationState *s;
+
+    s = migrate_get_current();
+
+    return s->enabled_capabilities[MIGRATION_CAPABILITY_DIRTY_BITMAPS];
+}
+
 bool migrate_use_events(void)
 {
     MigrationState *s;

diff --git a/migration/migration.h b/migration/migration.h
index 08c5d2ded1414496f571ca645645b274174609ef..da6bc37de8830a678112fe6240856d602985c9be 100644 (file)
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -205,6 +205,7 @@ bool migrate_postcopy(void);
 bool migrate_release_ram(void);
 bool migrate_postcopy_ram(void);
 bool migrate_zero_blocks(void);
+bool migrate_dirty_bitmaps(void);
 
 bool migrate_auto_converge(void);
 bool migrate_use_multifd(void);

diff --git a/qapi/migration.json b/qapi/migration.json
index 7f465a1902cef6e0fc48e59c86d11e9d7598a060..9d0bf82cf46084ee358d2fc3dab1b91a9b2d9c01 100644 (file)
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -354,12 +354,16 @@
 #
 # @x-multifd: Use more than one fd for migration (since 2.11)
 #
+# @dirty-bitmaps: If enabled, QEMU will migrate named dirty bitmaps.
+#                 (since 2.12)
+#
 # Since: 1.2
 ##
 { 'enum': 'MigrationCapability',
   'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks',
            'compress', 'events', 'postcopy-ram', 'x-colo', 'release-ram',
-           'block', 'return-path', 'pause-before-switchover', 'x-multifd' ] }
+           'block', 'return-path', 'pause-before-switchover', 'x-multifd',
+           'dirty-bitmaps' ] }
 
 ##
 # @MigrationCapabilityStatus: