Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758327AbYBGTDP (ORCPT ); Thu, 7 Feb 2008 14:03:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754944AbYBGTC4 (ORCPT ); Thu, 7 Feb 2008 14:02:56 -0500 Received: from smtp-out01.alice-dsl.net ([88.44.60.11]:57613 "EHLO smtp-out01.alice-dsl.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755686AbYBGTCy (ORCPT ); Thu, 7 Feb 2008 14:02:54 -0500 Date: Thu, 7 Feb 2008 20:02:41 +0100 From: Andi Kleen To: mingo@elte.hu, davej@codemonkey.org.uk, tglx@linutronix.de, linux-kernel@vger.kernel.org Subject: [PATCH] Use global TLB flushes in MTRR code Message-ID: <20080207190241.GA9449@basil.nowhere.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.13 (2006-08-11) X-OriginalArrivalTime: 07 Feb 2008 18:56:22.0376 (UTC) FILETIME=[219C6E80:01C869BB] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1283 Lines: 39 [probably stable material too] Use global TLB flushes in MTRR code Obviously kernel mappings should be flushed here too. Signed-off-by: Andi Kleen --- arch/x86/kernel/cpu/mtrr/generic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) Index: linux/arch/x86/kernel/cpu/mtrr/generic.c =================================================================== --- linux.orig/arch/x86/kernel/cpu/mtrr/generic.c +++ linux/arch/x86/kernel/cpu/mtrr/generic.c @@ -356,7 +356,7 @@ static void prepare_set(void) __acquires } /* Flush all TLBs via a mov %cr3, %reg; mov %reg, %cr3 */ - __flush_tlb(); + __flush_tlb_all(); /* Save MTRR state */ rdmsr(MTRRdefType_MSR, deftype_lo, deftype_hi); @@ -368,7 +368,7 @@ static void prepare_set(void) __acquires static void post_set(void) __releases(set_atomicity_lock) { /* Flush TLBs (no need to flush caches - they are disabled) */ - __flush_tlb(); + __flush_tlb_all(); /* Intel (P6) standard MTRRs */ mtrr_wrmsr(MTRRdefType_MSR, deftype_lo, deftype_hi); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/