diff --git a/include/exec/memory.h b/include/exec/memory.h
index b7966014fe..a506e84efe 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -429,6 +429,9 @@ void memory_region_init_io(MemoryRegion *mr,
  *        must be unique within any device
  * @size: size of the region.
  * @errp: pointer to Error*, to store an error if it happens.
+ *
+ * Note that this function does not do anything to cause the data in the
+ * RAM memory region to be migrated; that is the responsibility of the caller.
  */
 void memory_region_init_ram(MemoryRegion *mr,
                             struct Object *owner,
@@ -451,6 +454,9 @@ void memory_region_init_ram(MemoryRegion *mr,
  * @max_size: max size of the region.
  * @resized: callback to notify owner about used size change.
  * @errp: pointer to Error*, to store an error if it happens.
+ *
+ * Note that this function does not do anything to cause the data in the
+ * RAM memory region to be migrated; that is the responsibility of the caller.
  */
 void memory_region_init_resizeable_ram(MemoryRegion *mr,
                                        struct Object *owner,
@@ -474,6 +480,9 @@ void memory_region_init_resizeable_ram(MemoryRegion *mr,
  * @share: %true if memory must be mmaped with the MAP_SHARED flag
  * @path: the path in which to allocate the RAM.
  * @errp: pointer to Error*, to store an error if it happens.
+ *
+ * Note that this function does not do anything to cause the data in the
+ * RAM memory region to be migrated; that is the responsibility of the caller.
  */
 void memory_region_init_ram_from_file(MemoryRegion *mr,
                                       struct Object *owner,
@@ -494,6 +503,9 @@ void memory_region_init_ram_from_file(MemoryRegion *mr,
  * @share: %true if memory must be mmaped with the MAP_SHARED flag
  * @fd: the fd to mmap.
  * @errp: pointer to Error*, to store an error if it happens.
+ *
+ * Note that this function does not do anything to cause the data in the
+ * RAM memory region to be migrated; that is the responsibility of the caller.
  */
 void memory_region_init_ram_from_fd(MemoryRegion *mr,
                                     struct Object *owner,
@@ -515,6 +527,9 @@ void memory_region_init_ram_from_fd(MemoryRegion *mr,
  *        must be unique within any device
  * @size: size of the region.
  * @ptr: memory to be mapped; must contain at least @size bytes.
+ *
+ * Note that this function does not do anything to cause the data in the
+ * RAM memory region to be migrated; that is the responsibility of the caller.
  */
 void memory_region_init_ram_ptr(MemoryRegion *mr,
                                 struct Object *owner,
@@ -539,6 +554,10 @@ void memory_region_init_ram_ptr(MemoryRegion *mr,
  * @name: the name of the region.
  * @size: size of the region.
  * @ptr: memory to be mapped; must contain at least @size bytes.
+ *
+ * Note that this function does not do anything to cause the data in the
+ * RAM memory region to be migrated; that is the responsibility of the caller.
+ * (For RAM device memory regions, migrating the contents rarely makes sense.)
  */
 void memory_region_init_ram_device_ptr(MemoryRegion *mr,
                                        struct Object *owner,