Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759300Ab1EMNIF (ORCPT ); Fri, 13 May 2011 09:08:05 -0400 Received: from tx2ehsobe004.messaging.microsoft.com ([65.55.88.14]:56870 "EHLO TX2EHSOBE008.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759242Ab1EMNID (ORCPT ); Fri, 13 May 2011 09:08:03 -0400 X-SpamScore: -23 X-BigFish: VPS-23(zzbb2dK1433M9371O1432N98dKzz1202hzzz32i668h839h) X-Forefront-Antispam-Report: KIP:(null);UIP:(null);IPVD:NLI;H:ausb3twp02.amd.com;RD:none;EFVD:NLI X-WSS-ID: 0LL4XT6-02-6RQ-02 X-M-MSG: Message-ID: <4DCD2C3F.9070905@amd.com> Date: Fri, 13 May 2011 09:03:59 -0400 From: Boris Ostrovsky User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.14) Gecko/20110221 SUSE/3.1.8 Thunderbird/3.1.8 MIME-Version: 1.0 To: Hans Rosenfeld , Chuck Ebbert CC: "linux-kernel@vger.kernel.org" , "Petkov, Borislav" Subject: Re: [PATCH] cpu, AMD: Fix another bug in the new errata checking code References: <20110512195938.1728ab52@katamari> <20110513102154.GB9270@escobedo.osrc.amd.com> In-Reply-To: <20110513102154.GB9270@escobedo.osrc.amd.com> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit X-OriginatorOrg: amd.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 974 Lines: 23 On 05/13/2011 06:21 AM, Hans Rosenfeld wrote: > On Thu, May 12, 2011 at 07:59:38PM -0400, Chuck Ebbert wrote: > The revision guide states that family 0x10 model 6 stepping 2 has E400. > So I would expect that OSVW length is>= 2 and that OSVW status has bit > 1 set, or that OSVW length is< 2. This indicates that the workaround is > necessary, without any need to check the family-model-stepping ranges. > > It would also be correct if the BIOS disabled C1E and cleared the > corresponding OSVW status bit. Anything else would probably be a very > nasty BIOS bug. > > Could you send me the contents of MSRs 0xc0010140, 0xc0010141 and > 0xc0010055? Knowing whether any C state above C1 is declared could be useful too. -boris -- 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/