diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h
index cb0d2048eca6..1e7fc0085596 100644
--- a/include/asm-um/pgtable.h
+++ b/include/asm-um/pgtable.h
@@ -9,6 +9,7 @@
 #define __UM_PGTABLE_H
 
 #include "linux/sched.h"
+#include <asm/fixmap.h>
 
 #define _PAGE_PRESENT	0x001
 #define _PAGE_NEWPAGE	0x002
@@ -308,6 +309,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
  * this macro returns the index of the entry in the pmd page which would
  * control the given virtual address
  */
+#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
 #define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
 
 /*