]> err.no Git - linux-2.6/commitdiff
x86: mask NX from pte_pfn
authorJeremy Fitzhardinge <jeremy@goop.org>
Wed, 30 Jan 2008 12:32:57 +0000 (13:32 +0100)
committerIngo Molnar <mingo@elte.hu>
Wed, 30 Jan 2008 12:32:57 +0000 (13:32 +0100)
In 32-bit PAE, mask NX from pte_pfn, since it isn't part of the PFN.
This code is due for unification anyway, but this fixes a latent bug.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
include/asm-x86/pgtable-3level.h

index 948a334141184f09e486baa971ed321cb6727f6f..9816346f7df6eceb3c7657ba0846e9ac4fc399d1 100644 (file)
@@ -155,7 +155,7 @@ static inline int pte_none(pte_t pte)
 
 static inline unsigned long pte_pfn(pte_t pte)
 {
-       return pte_val(pte) >> PAGE_SHIFT;
+       return (pte_val(pte) & ~_PAGE_NX) >> PAGE_SHIFT;
 }
 
 extern unsigned long long __supported_pte_mask;