From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Tue, 20 May 2008 07:26:24 +0000 (+0100)
Subject: xen: use PTE_MASK in pte_mfn()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=cbb3077cbe718795d7ae5d78ed11659ca73c97b9;p=deliverable%2Flinux.git

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>
---

diff --git a/include/asm-x86/xen/page.h b/include/asm-x86/xen/page.h
index 01799305f02a..baf3a4dce28c 100644
--- 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)