diff --git a/qemu/include/qapi/clone-visitor.h b/qemu/include/qapi/clone-visitor.h
index 16ceff55..33ce28b9 100644
--- a/qemu/include/qapi/clone-visitor.h
+++ b/qemu/include/qapi/clone-visitor.h
@@ -23,6 +23,10 @@ typedef struct QapiCloneVisitor QapiCloneVisitor;
 void *qapi_clone(const void *src, void (*visit_type)(Visitor *, const char *,
                                                      void **, Error **));
 
+void qapi_clone_members(void *dst, const void *src, size_t sz,
+                        void (*visit_type_members)(Visitor *, void *,
+                                                   Error **));
+
 /*
  * Deep-clone QAPI object @src of the given @type, and return the result.
  *
@@ -34,4 +38,15 @@ void *qapi_clone(const void *src, void (*visit_type)(Visitor *, const char *,
                         (void (*)(Visitor *, const char *, void**,      \
                                   Error **))visit_type_ ## type))
 
+/*
+ * Copy deep clones of @type members from @src to @dst.
+ *
+ * Not usable on QAPI scalars (integers, strings, enums), nor on a
+ * QAPI object that references the 'any' type.
+ */
+#define QAPI_CLONE_MEMBERS(type, dst, src)                              \
+    qapi_clone_members(dst, src, sizeof(type),                          \
+                       (void (*)(Visitor *, void *,                     \
+                                 Error **))visit_type_ ## type ## _members)
+
 #endif
diff --git a/qemu/qapi/qapi-clone-visitor.c b/qemu/qapi/qapi-clone-visitor.c
index 34086cbf..de756bfb 100644
--- a/qemu/qapi/qapi-clone-visitor.c
+++ b/qemu/qapi/qapi-clone-visitor.c
@@ -180,3 +180,16 @@ void *qapi_clone(const void *src, void (*visit_type)(Visitor *, const char *,
     visit_free(v);
     return dst;
 }
+
+void qapi_clone_members(void *dst, const void *src, size_t sz,
+                        void (*visit_type_members)(Visitor *, void *,
+                                                   Error **))
+{
+    Visitor *v;
+
+    v = qapi_clone_visitor_new();
+    memcpy(dst, src, sz);
+    to_qcv(v)->depth++;
+    visit_type_members(v, dst, &error_abort);
+    visit_free(v);
+}