1 files changed, 17 insertions, 1 deletions

diff --git a/hw/vfio/migration-multifd.c b/hw/vfio/migration-multifd.c
index bfb9a72fa4..aacddc503b 100644
--- a/hw/vfio/migration-multifd.c
+++ b/hw/vfio/migration-multifd.c
@@ -476,18 +476,34 @@ bool vfio_multifd_transfer_supported(void)
 
 bool vfio_multifd_transfer_enabled(VFIODevice *vbasedev)
 {
-    return false;
+    VFIOMigration *migration = vbasedev->migration;
+
+    return migration->multifd_transfer;
 }
 
 bool vfio_multifd_setup(VFIODevice *vbasedev, bool alloc_multifd, Error **errp)
 {
     VFIOMigration *migration = vbasedev->migration;
 
+    if (vbasedev->migration_multifd_transfer == ON_OFF_AUTO_AUTO) {
+        migration->multifd_transfer = vfio_multifd_transfer_supported();
+    } else {
+        migration->multifd_transfer =
+            vbasedev->migration_multifd_transfer == ON_OFF_AUTO_ON;
+    }
+
     if (!vfio_multifd_transfer_enabled(vbasedev)) {
         /* Nothing further to check or do */
         return true;
     }
 
+    if (!vfio_multifd_transfer_supported()) {
+        error_setg(errp,
+                   "%s: Multifd device transfer requested but unsupported in the current config",
+                   vbasedev->name);
+        return false;
+    }
+
     if (alloc_multifd) {
         assert(!migration->multifd);
         migration->multifd = vfio_multifd_new();