Index: head/sys/arm64/arm64/pmap.c
===================================================================
--- head/sys/arm64/arm64/pmap.c
+++ head/sys/arm64/arm64/pmap.c
@@ -295,7 +295,6 @@
 static pv_entry_t pmap_pvh_remove(struct md_page *pvh, pmap_t pmap,
 		    vm_offset_t va);
 
-static int pmap_change_attr(vm_offset_t va, vm_size_t size, int mode);
 static int pmap_change_attr_locked(vm_offset_t va, vm_size_t size, int mode);
 static pt_entry_t *pmap_demote_l1(pmap_t pmap, pt_entry_t *l1, vm_offset_t va);
 static pt_entry_t *pmap_demote_l2_locked(pmap_t pmap, pt_entry_t *l2,
@@ -5263,7 +5262,7 @@
  * latter case, the memory type may have been changed on some part of the
  * virtual address range or the direct map.
  */
-static int
+int
 pmap_change_attr(vm_offset_t va, vm_size_t size, int mode)
 {
 	int error;
Index: head/sys/arm64/include/pmap.h
===================================================================
--- head/sys/arm64/include/pmap.h
+++ head/sys/arm64/include/pmap.h
@@ -143,6 +143,7 @@
 	((((va) | (pa)) & L1_OFFSET) == 0 && (size) >= L1_SIZE)
 
 void	pmap_bootstrap(vm_offset_t, vm_offset_t, vm_paddr_t, vm_size_t);
+int	pmap_change_attr(vm_offset_t va, vm_size_t size, int mode);
 void	pmap_kenter(vm_offset_t sva, vm_size_t size, vm_paddr_t pa, int mode);
 void	pmap_kenter_device(vm_offset_t, vm_size_t, vm_paddr_t);
 vm_paddr_t pmap_kextract(vm_offset_t va);