From c3bcfb57e1e64b9b2f8b2d90564826637e21c5ea Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 30 Jan 2008 13:32:57 +0100 Subject: [PATCH] x86: mask NX from pte_pfn 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 Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- include/asm-x86/pgtable-3level.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/asm-x86/pgtable-3level.h b/include/asm-x86/pgtable-3level.h index 948a33414118..9816346f7df6 100644 --- a/include/asm-x86/pgtable-3level.h +++ b/include/asm-x86/pgtable-3level.h @@ -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; -- 2.30.2