[PATCH 4/4] x86: only CPU features determine NX capabilities

From: Kees Cook
Date: Tue Nov 09 2010 - 17:19:11 EST


Fix the NX feature boot warning when NX is missing to correctly
reflect that BIOSes cannot disable NX now.

Signed-off-by: Kees Cook <kees.cook@xxxxxxxxxxxxx>
Acked-by: Pekka Enberg <penberg@xxxxxxxxxx>
---
arch/x86/mm/setup_nx.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/setup_nx.c b/arch/x86/mm/setup_nx.c
index a3250aa..410531d 100644
--- a/arch/x86/mm/setup_nx.c
+++ b/arch/x86/mm/setup_nx.c
@@ -41,7 +41,7 @@ void __init x86_report_nx(void)
{
if (!cpu_has_nx) {
printk(KERN_NOTICE "Notice: NX (Execute Disable) protection "
- "missing in CPU or disabled in BIOS!\n");
+ "missing in CPU!\n");
} else {
#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
if (disable_nx) {
--
1.7.2.3


--
Kees Cook
Ubuntu Security Team
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