[Qemu-devel] [PATCH 07/17] qapi: add dirty-bitmaps migration capability

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 include/migration/migration.h | 1 +
 migration/migration.c         | 9 +++++++++
 qapi-schema.json              | 4 +++-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/include/migration/migration.h b/include/migration/migration.h
index 3ec88ab..582a527 100644
--- a/include/migration/migration.h
+++ b/include/migration/migration.h
@@ -299,6 +299,7 @@ void migrate_del_blocker(Error *reason);
 bool migrate_postcopy(void);
 bool migrate_postcopy_ram(void);
 bool migrate_zero_blocks(void);
+bool migrate_dirty_bitmaps(void);
 
 bool migrate_auto_converge(void);
 
diff --git a/migration/migration.c b/migration/migration.c
index fb04780..31993e9 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1175,6 +1175,15 @@ int migrate_decompress_threads(void)
     return s->parameters[MIGRATION_PARAMETER_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/qapi-schema.json b/qapi-schema.json
index b3038b2..5aff3ac 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -544,11 +544,13 @@
 #          been migrated, pulling the remaining pages along as needed. NOTE: If
 #          the migration fails during postcopy the VM will fail.  (since 2.5)
 #
+# @dirty-bitmaps: If enabled, QEMU will migrate named dirty bitmaps. (since 2.6)
+#
 # Since: 1.2
 ##
 { 'enum': 'MigrationCapability',
   'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks',
-           'compress', 'events', 'x-postcopy-ram'] }
+           'compress', 'events', 'x-postcopy-ram', 'dirty-bitmaps'] }
 
 ##
 # @MigrationCapabilityStatus
-- 
1.8.3.1