diff --git a/sys/kern/subr_devmap.c b/sys/kern/subr_devmap.c
--- a/sys/kern/subr_devmap.c
+++ b/sys/kern/subr_devmap.c
@@ -290,7 +290,7 @@
 	return ((void *)(va + offset));
 }
 
-#if defined(__aarch64__)
+#if defined(__aarch64__) || defined(__riscv)
 void *
 pmap_mapdev_attr(vm_offset_t pa, vm_size_t size, vm_memattr_t ma)
 {
diff --git a/sys/riscv/include/pmap.h b/sys/riscv/include/pmap.h
--- a/sys/riscv/include/pmap.h
+++ b/sys/riscv/include/pmap.h
@@ -145,10 +145,12 @@
 void	pmap_activate_sw(struct thread *);
 void	pmap_bootstrap(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);
 void	pmap_kremove(vm_offset_t);
 void	pmap_kremove_device(vm_offset_t, vm_size_t);
+void	*pmap_mapdev_attr(vm_offset_t pa, vm_size_t size, vm_memattr_t ma);
 bool	pmap_page_is_mapped(vm_page_t m);
 bool	pmap_ps_enabled(pmap_t);
 
diff --git a/sys/riscv/riscv/pmap.c b/sys/riscv/riscv/pmap.c
--- a/sys/riscv/riscv/pmap.c
+++ b/sys/riscv/riscv/pmap.c
@@ -916,7 +916,7 @@
  ***************************************************/
 
 void
-pmap_kenter_device(vm_offset_t sva, vm_size_t size, vm_paddr_t pa)
+pmap_kenter(vm_offset_t sva, vm_size_t size, vm_paddr_t pa, int mode __unused)
 {
 	pt_entry_t entry;
 	pt_entry_t *l3;
@@ -947,6 +947,12 @@
 	pmap_invalidate_range(kernel_pmap, sva, va);
 }
 
+void
+pmap_kenter_device(vm_offset_t sva, vm_size_t size, vm_paddr_t pa)
+{
+	pmap_kenter(sva, size, pa, VM_MEMATTR_DEVICE);
+}
+
 /*
  * Remove a page from the kernel pagetables.
  * Note: not SMP coherent.