1 files changed, 7 insertions, 0 deletions

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index c117b28df151..339e49a9bb6c 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -452,6 +452,13 @@ static inline int pud_present(pud_t pud)
 }
 #endif  /* PAGETABLE_LEVELS > 2 */
 
+#if PAGETABLE_LEVELS > 3
+static inline int pgd_present(pgd_t pgd)
+{
+        return pgd_val(pgd) & _PAGE_PRESENT;
+}
+#endif  /* PAGETABLE_LEVELS > 3 */
+
 #endif  /* __ASSEMBLY__ */
 
 #ifdef CONFIG_X86_32