From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753371Ab1K3F7t (ORCPT ); Wed, 30 Nov 2011 00:59:49 -0500 Received: from e28smtp05.in.ibm.com ([122.248.162.5]:37372 "EHLO e28smtp05.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751147Ab1K3F7s (ORCPT ); Wed, 30 Nov 2011 00:59:48 -0500 Message-ID: <4ED5C640.8030102@linux.vnet.ibm.com> Date: Wed, 30 Nov 2011 11:29:28 +0530 From: "Srivatsa S. Bhat" User-Agent: Mozilla/5.0 (X11; Linux i686; rv:7.0) Gecko/20110927 Thunderbird/7.0 MIME-Version: 1.0 To: Larry Finger CC: LKML , Borislav Petkov Subject: Re: 3.2-rc2 freezes on boot for AMD K6 - bisected to commit bcb80e53877c2045d9e52f4a71372c3fe6501f6f References: <4ED5B70F.606@lwfinger.net> In-Reply-To: <4ED5B70F.606@lwfinger.net> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit x-cbid: 11113005-8256-0000-0000-00000054AD9F Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/30/2011 10:24 AM, Larry Finger wrote: > I have an ancient laptop with an AMD-K6 CPU that freezes on boot with > 3.2-rc2. The problem was bisected to commit bcb80e53877c2. > > The cpuinfo for this box is: > >>> cpu.1: cpuinfo > ----- /proc/cpuinfo ----- > processor : 0 > vendor_id : AuthenticAMD > cpu family : 5 > model : 8 > model name : AMD-K6(tm) 3D processor > stepping : 12 > cpu MHz : 428.804 > cache size : 64 KB > fdiv_bug : no > hlt_bug : no > f00f_bug : no > coma_bug : no > fpu : yes > fpu_exception : yes > cpuid level : 1 > wp : yes > flags : fpu vme de pse tsc msr cx8 pge mmx syscall 3dnow > k6_mtrr up > bogomips : 857.60 > clflush size : 32 > cache_alignment : 32 > address sizes : 32 bits physical, 32 bits virtual > power management: > > ----- /proc/cpuinfo end ----- > > This patch is quite simple, thus it appears that rdmsr() is OK, but that > rdmsr_safe() is not. > > I am happy to provide any other info regarding this box. > Hi Larry, Can you please try out the patch posted in https://lkml.org/lkml/2011/11/28/178 ? This patch will be available in mainline kernel from -rc4. https://lkml.org/lkml/2011/11/28/457 -- Regards, Srivatsa S. Bhat IBM Linux Technology Center