ivshmem: use migration blockers to prevent live migration in peer mode (v2)

Now when you try to migrate with ivshmem, you get a proper QMP error:

(qemu) migrate tcp:localhost:1025
Migration is disabled when using feature 'peer mode' in device 'ivshmem'
(qemu)

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/qerror.h b/qerror.h
index d4bfcfd..7e2eebf 100644
--- a/qerror.h
+++ b/qerror.h
@@ -72,6 +72,9 @@ QError *qobject_to_qerror(const QObject *obj);
 #define QERR_DEVICE_IN_USE \
     "{ 'class': 'DeviceInUse', 'data': { 'device': %s } }"
 
+#define QERR_DEVICE_FEATURE_BLOCKS_MIGRATION \
+    "{ 'class': 'DeviceFeatureBlocksMigration', 'data': { 'device': %s, 'feature': %s } }"
+
 #define QERR_DEVICE_LOCKED \
     "{ 'class': 'DeviceLocked', 'data': { 'device': %s } }"