Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754836AbZKQQoR (ORCPT ); Tue, 17 Nov 2009 11:44:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754212AbZKQQoP (ORCPT ); Tue, 17 Nov 2009 11:44:15 -0500 Received: from terminus.zytor.com ([198.137.202.10]:42758 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752844AbZKQQoK (ORCPT ); Tue, 17 Nov 2009 11:44:10 -0500 Message-ID: <4B02D2C1.2070502@zytor.com> Date: Tue, 17 Nov 2009 08:43:45 -0800 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20091014 Fedora/3.0-2.8.b4.fc11 Thunderbird/3.0b4 MIME-Version: 1.0 To: Lennart Sorensen CC: Alan Cox , Pavel Machek , Matteo Croce , Ingo Molnar , linux-kernel@vger.kernel.org Subject: Re: i686 quirk for AMD Geode References: <20091109201608.GD15159@caffeine.csclub.uwaterloo.ca> <4AF886D4.1080108@zytor.com> <20091109212333.GE15159@caffeine.csclub.uwaterloo.ca> <20091112121805.GF1394@ucw.cz> <20091113162301.GU15157@caffeine.csclub.uwaterloo.ca> <20091113165730.0b9b2676@lxorguk.ukuu.org.uk> <20091113192412.GY15157@caffeine.csclub.uwaterloo.ca> <20091113212148.5cb829d4@lxorguk.ukuu.org.uk> <20091116175006.GA15157@caffeine.csclub.uwaterloo.ca> <20091117115929.4ba23c49@lxorguk.ukuu.org.uk> <20091117143456.GF15157@caffeine.csclub.uwaterloo.ca> In-Reply-To: <20091117143456.GF15157@caffeine.csclub.uwaterloo.ca> 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 Content-Length: 1022 Lines: 32 On 11/17/2009 06:34 AM, Lennart Sorensen wrote: > On Tue, Nov 17, 2009 at 11:59:29AM +0000, Alan Cox wrote: >>> Trying rdmsr from msr-tools 1.2 gives me: >>> >>> # ./rdmsr -x 0x00001810 >>> rdmsr: CPU 0 cannot read MSR 0x00001810 >>> >>> Hmm, now what? >> >> Beats me - I thought the region registers were read/write. > > Actually it seems I can't read any MSRs on it. > > Using the same kernel, same msr module, same rdmsr on a Geode LX system > works fine. I can read MSRs no problem. Seems the msr module isn't > working on the Geode SC1200 (and hence possibly the GX1). > That would seem highly unlikely ... unless the MSR flag isn't exposed in CPUID. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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/