Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964972AbaDITx5 (ORCPT ); Wed, 9 Apr 2014 15:53:57 -0400 Received: from prod-mail-xrelay07.akamai.com ([72.246.2.115]:35652 "EHLO prod-mail-xrelay07.akamai.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934006AbaDITxu (ORCPT ); Wed, 9 Apr 2014 15:53:50 -0400 Message-ID: <5345A54D.2050808@akamai.com> Date: Wed, 09 Apr 2014 15:53:49 -0400 From: Jason Baron User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130330 Thunderbird/17.0.5 MIME-Version: 1.0 To: Borislav Petkov CC: "Luck, Tony" , Aristeu Rozanski , "hpa@zytor.com" , "mingo@kernel.org" , "dougthompson@xmission.com" , "m.chehab@samsung.com" , "mitake@dcl.info.waseda.ac.jp" , "linux-edac@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH 3/3] ie31200_edac: Add driver References: <760765424abe31811027ff3efd078bc858b7d3ed.1396645124.git.jbaron@akamai.com> <20140409113552.GJ6529@pd.tnic> <20140409133433.GJ29214@redhat.com> <3908561D78D1C84285E8C5FCA982C28F31E22EAC@ORSMSX106.amr.corp.intel.com> <20140409173633.GN6529@pd.tnic> <5345980F.7070604@akamai.com> <20140409191454.GQ6529@pd.tnic> In-Reply-To: <20140409191454.GQ6529@pd.tnic> 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 04/09/2014 03:14 PM, Borislav Petkov wrote: > On Wed, Apr 09, 2014 at 02:57:19PM -0400, Jason Baron wrote: >> Right, so maybe the fact that its a desktop chipset means that it >> behaves differently and doesn't raise MCEs on memory errors. We have a >> bunch of these processors and we haven't yet seen an MCE raised on a >> memory error. > > This can't be - an uncorrectable error will have to generate a machine > check exception if consumed - there's no other option. > > Can you do > > rdmsr 0x179 > rdmsr 0x17b > > and paste the results here? > Unfortunately, the box reporting the ue errors just went into transit (so that I can better examine this issue), so I will probably not be able to run this experiment on that specific box until next week. However, I was able to run it on a very similar box (same pci id for the mch), and I get: # ./rdmsr 0x179 c09 # ./rdmsr 0x17b rdmsr: CPU 0 cannot read MSR 0x0000017b Thanks, -Jason -- 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/