From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752467Ab1HZWYr (ORCPT ); Fri, 26 Aug 2011 18:24:47 -0400 Received: from terminus.zytor.com ([198.137.202.10]:50861 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751370Ab1HZWYq (ORCPT ); Fri, 26 Aug 2011 18:24:46 -0400 Message-ID: <4E581D1A.90404@zytor.com> Date: Fri, 26 Aug 2011 15:24:26 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20110816 Thunderbird/6.0 MIME-Version: 1.0 To: Suresh Siddha CC: Tony Vroon , LKML , Thomas Gleixner , Ingo Molnar , Tejun Heo , yinghai@kernel.org Subject: Re: MTRR setup failure on Fujitsu Lifebook S761 References: <4E579397.6010009@linx.net> <4E57CBBB.3040806@zytor.com> <1314385315.8356.0.camel@localhost> <1314394157.4729.23.camel@sbsiddha-desk.sc.intel.com> In-Reply-To: <1314394157.4729.23.camel@sbsiddha-desk.sc.intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/26/2011 02:29 PM, Suresh Siddha wrote: > On Fri, 2011-08-26 at 12:01 -0700, Tony Vroon wrote: >> On Fri, 2011-08-26 at 09:37 -0700, H. Peter Anvin wrote: >>> Hm, I don't see any evidence of the MTRR sanitizer running at all... >> >> It is almost as if it failed to find an optimal configuration; does that >> error path not print anything? > > MTRR cleanup bails out in mtrr_need_cleanup() if it finds any entry > other than WB or UC. And the first entry you had was write-protect. WP for the BIOS is becoming reasonably common; we need to handle that. -hpa