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From: Kees Cook <kees.cook@canonical.com>
To: x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 4/4] x86: only CPU features determine NX capabilities
Date: Tue, 9 Nov 2010 10:15:51 -0800	[thread overview]
Message-ID: <20101109181551.GI5876@outflux.net> (raw)
In-Reply-To: <20101109181157.GE5876@outflux.net>

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@canonical.com>
---
 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

  parent reply	other threads:[~2010-11-09 18:15 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-09 18:11 [Security] [PATCH v3 0/4] x86: clear XD_DISABLED flag on Intel to regain NX Kees Cook
2010-11-09 18:14 ` [PATCH 1/4] x86: rename verify_cpu_64.S to verify_cpu.S Kees Cook
2010-11-09 18:46   ` Pekka Enberg
2010-11-09 19:00     ` Kees Cook
2010-11-09 19:59       ` Pekka Enberg
2010-11-09 19:02     ` Kees Cook
2010-11-09 19:11       ` Pekka Enberg
2010-11-09 18:15 ` [PATCH 2/4] x86: clear XD_DISABLED flag on Intel to regain NX Kees Cook
2010-11-10 16:11   ` Andi Kleen
2010-11-10 16:47     ` Kees Cook
2010-11-10 17:42       ` Andi Kleen
2010-11-10 18:15         ` Kees Cook
2010-11-09 18:15 ` [PATCH 3/4] x86: call verify_cpu during 32bit CPU startup Kees Cook
2010-11-09 19:09   ` Pekka Enberg
2010-11-09 19:19     ` Kees Cook
2010-11-09 19:46       ` Pekka Enberg
2010-11-09 19:56         ` Kees Cook
2010-11-09 20:28           ` Pekka Enberg
2010-11-09 20:48             ` Kees Cook
2010-11-09 20:50               ` Pekka Enberg
2010-11-09 18:15 ` Kees Cook [this message]
2010-11-09 18:31 ` [Security] [PATCH v3 0/4] x86: clear XD_DISABLED flag on Intel to regain NX Alan Cox
2010-11-09 18:56   ` Kees Cook
2010-11-09 22:50     ` Alan Cox
2010-11-09 23:53       ` Kees Cook
2010-11-10  0:21         ` Alan Cox
2010-11-10  0:43           ` Kees Cook
2010-11-10  1:10             ` Kees Cook
2010-11-10 11:11               ` Alan Cox
2010-11-10 11:15                 ` Ingo Molnar
2010-11-11 15:15               ` Rogier Wolff
  -- strict thread matches above, loose matches on Subject: below --
2010-11-10 18:35 [Security] [PATCH v5 " Kees Cook
2010-11-10 18:35 ` [PATCH 4/4] x86: only CPU features determine NX capabilities Kees Cook
2010-11-09 22:17 [Security] [PATCH v4 0/4] x86: clear XD_DISABLED flag on Intel to regain NX Kees Cook
2010-11-09 22:19 ` [PATCH 4/4] x86: only CPU features determine NX capabilities Kees Cook
2010-06-19  5:50 [PATCH v2 0/4] x86: clear XD_DISABLED flag on Intel to regain NX Kees Cook
2010-06-19  5:53 ` [PATCH 4/4] x86: only CPU features determine NX capabilities Kees Cook

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