From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755432AbZCNAng (ORCPT ); Fri, 13 Mar 2009 20:43:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753976AbZCNATo (ORCPT ); Fri, 13 Mar 2009 20:19:44 -0400 Received: from kroah.org ([198.145.64.141]:34916 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753816AbZCNATc (ORCPT ); Fri, 13 Mar 2009 20:19:32 -0400 X-Mailbox-Line: From gregkh@mini.kroah.org Fri Mar 13 17:07:49 2009 Message-Id: <20090314000749.798501539@mini.kroah.org> User-Agent: quilt/0.48-1 Date: Fri, 13 Mar 2009 17:06:19 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: Justin Forbes , Zwane Mwaikambo , "Theodore Ts'o" , Randy Dunlap , Dave Jones , Chuck Wolber , Chris Wedgwood , Michael Krufky , Chuck Ebbert , Domenico Andreoli , Willy Tarreau , Rodrigo Rubira Branco , Jake Edge , Eugene Teo , torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Ingo Molnar Subject: [patch 71/96] x86: tone down mtrr_trim_uncached_memory() warning References: <20090314000508.803142980@mini.kroah.org> Content-Disposition: inline; filename=x86-tone-down-mtrr_trim_uncached_memory-warning.patch In-Reply-To: <20090314001449.GA4485@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2.6.27-stable review patch. If anyone has any objections, please let us know. ------------------ From: Ingo Molnar commit bf3647c44bc76c43c4b2ebb4c37a559e899ac70e upstream. kerneloops.org is reporting a lot of these warnings that come due to vmware not setting up any MTRRs for emulated CPUs: | Reported 709 times (14696 total reports) | BIOS bug (often in VMWare) where the MTRR's are set up incorrectly | or not at all | | This warning was last seen in version 2.6.29-rc2-git1, and first | seen in 2.6.24. | | More info: | http://www.kerneloops.org/searchweek.php?search=mtrr_trim_uncached_memory Keep a one-liner KERN_INFO about it - so that we have so notice if empty MTRRs are caused by native hardware/BIOS weirdness. Signed-off-by: Ingo Molnar Cc: Chuck Ebbert Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/cpu/mtrr/main.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/arch/x86/kernel/cpu/mtrr/main.c +++ b/arch/x86/kernel/cpu/mtrr/main.c @@ -1496,8 +1496,7 @@ int __init mtrr_trim_uncached_memory(uns /* kvm/qemu doesn't have mtrr set right, don't trim them all */ if (!highest_pfn) { - WARN(!kvm_para_available(), KERN_WARNING - "WARNING: strange, CPU MTRRs all blank?\n"); + printk(KERN_INFO "CPU MTRRs all blank - virtualized system.\n"); return 0; }