1 files changed, 28 insertions, 0 deletions
diff --git a/system/physmem.c b/system/physmem.c
index 2fb0c25..e5ff26a 100644
--- a/system/physmem.c
+++ b/system/physmem.c
@@ -2827,6 +2827,34 @@ found:
 }
 
 /*
+ * Creates new guest memfd for the ramblocks and closes the
+ * existing memfd.
+ */
+int ram_block_rebind(Error **errp)
+{
+    RAMBlock *block;
+
+    qemu_mutex_lock_ramlist();
+
+    RAMBLOCK_FOREACH(block) {
+        if (block->flags & RAM_GUEST_MEMFD) {
+            if (block->guest_memfd >= 0) {
+                close(block->guest_memfd);
+            }
+            block->guest_memfd = kvm_create_guest_memfd(block->max_length,
+                                                        0, errp);
+            if (block->guest_memfd < 0) {
+                qemu_mutex_unlock_ramlist();
+                return -1;
+            }
+
+        }
+    }
+    qemu_mutex_unlock_ramlist();
+    return 0;
+}
+
+/*
  * Finds the named RAMBlock
  *
  * name: The name of RAMBlock to find