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-rw-r--r--hw/vfio/container.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index 936ce37f19..3e8d645ebb 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -987,6 +987,13 @@ static bool vfio_legacy_attach_device(const char *name, VFIODevice *vbasedev,
         goto device_put_exit;
     }
 
+    if (vbasedev->mdev) {
+        error_setg(&vbasedev->cpr.mdev_blocker,
+                   "CPR does not support vfio mdev %s", vbasedev->name);
+        migrate_add_blocker_modes(&vbasedev->cpr.mdev_blocker, &error_fatal,
+                                  MIG_MODE_CPR_TRANSFER, -1);
+    }
+
     return true;
 
 device_put_exit:
@@ -1004,6 +1011,7 @@ static void vfio_legacy_detach_device(VFIODevice *vbasedev)
 
     vfio_device_unprepare(vbasedev);
 
+    migrate_del_blocker(&vbasedev->cpr.mdev_blocker);
     object_unref(vbasedev->hiod);
     vfio_device_put(vbasedev);
     vfio_group_put(group);