xen: use PTE_MASK in pte_mfn()

Use PTE_MASK to extract mfn from pte. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Tested-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
git-mirror · May 20, 2008 · cbb3077 · cbb3077
1 parent ba23cef
commit cbb3077
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/asm-x86/xen/page.h b/include/asm-x86/xen/page.h
@@ -127,7 +127,7 @@ static inline void set_phys_to_machine(unsigned long pfn, unsigned long mfn)
 
 static inline unsigned long pte_mfn(pte_t pte)
 {
-	return (pte.pte & ~_PAGE_NX) >> PAGE_SHIFT;
+	return (pte.pte & PTE_MASK) >> PAGE_SHIFT;
 }
 
 static inline pte_t mfn_pte(unsigned long page_nr, pgprot_t pgprot)