diff --git a/include/exec/memory.h b/include/exec/memory.h
index 5ed4042f87..a4cabdf44c 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -1240,18 +1240,6 @@ void memory_region_set_flush_coalesced(MemoryRegion *mr);
  */
 void memory_region_clear_flush_coalesced(MemoryRegion *mr);
 
-/**
- * memory_region_set_global_locking: Declares the access processing requires
- *                                   QEMU's global lock.
- *
- * When this is invoked, accesses to the memory region will be processed while
- * holding the global lock of QEMU. This is the default behavior of memory
- * regions.
- *
- * @mr: the memory region to be updated.
- */
-void memory_region_set_global_locking(MemoryRegion *mr);
-
 /**
  * memory_region_clear_global_locking: Declares that access processing does
  *                                     not depend on the QEMU global lock.
diff --git a/memory.c b/memory.c
index e26e5a3b1d..4b41fb837b 100644
--- a/memory.c
+++ b/memory.c
@@ -2189,11 +2189,6 @@ void memory_region_clear_flush_coalesced(MemoryRegion *mr)
     }
 }
 
-void memory_region_set_global_locking(MemoryRegion *mr)
-{
-    mr->global_locking = true;
-}
-
 void memory_region_clear_global_locking(MemoryRegion *mr)
 {
     mr->global_locking = false;