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>
---
 migration/migration.c | 9 +++++++++
 migration/migration.h | 1 +
 qapi-schema.json      | 4 +++-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/migration/migration.c b/migration/migration.c
index b13a9f496a..dac67eab69 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1280,6 +1280,15 @@ 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 1d974bacce..0c6ba56423 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -170,6 +170,7 @@ 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);
 
diff --git a/qapi-schema.json b/qapi-schema.json
index 485767f1ab..f1d32547ec 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -903,12 +903,14 @@
 # @return-path: If enabled, migration will use the return path even
 #               for precopy. (since 2.10)
 #
+# @dirty-bitmaps: If enabled, QEMU will migrate named dirty bitmaps. (since 2.9)
+#
 # 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' ] }
+           'block', 'return-path', 'dirty-bitmaps' ] }
 
 ##
 # @MigrationCapabilityStatus:
-- 
2.11.1

On 07/10/2017 11:30 AM, Vladimir Sementsov-Ogievskiy wrote:
> 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>
> ---
>  migration/migration.c | 9 +++++++++
>  migration/migration.h | 1 +
>  qapi-schema.json      | 4 +++-
>  3 files changed, 13 insertions(+), 1 deletion(-)
> 

> +++ b/qapi-schema.json
> @@ -903,12 +903,14 @@
>  # @return-path: If enabled, migration will use the return path even
>  #               for precopy. (since 2.10)
>  #
> +# @dirty-bitmaps: If enabled, QEMU will migrate named dirty bitmaps. (since 2.9)

We've missed 2.9; this should be 2.10.

> +#
>  # 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' ] }
> +           'block', 'return-path', 'dirty-bitmaps' ] }
>  
>  ##
>  # @MigrationCapabilityStatus:
> 

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org