From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756344Ab2COOST (ORCPT ); Thu, 15 Mar 2012 10:18:19 -0400 Received: from terminus.zytor.com ([198.137.202.10]:56734 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754421Ab2COOSR (ORCPT ); Thu, 15 Mar 2012 10:18:17 -0400 Message-ID: <4F61FA14.6020203@zytor.com> Date: Thu, 15 Mar 2012 07:17:56 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120209 Thunderbird/10.0.1 MIME-Version: 1.0 To: Matthew Garrett CC: linux-kernel@vger.kernel.org, x86@kernel.org, matt.fleming@intel.com Subject: Re: [PATCH] EFI: Only set regions uncacheable if they support it References: <1331819798-1955-1-git-send-email-mjg@redhat.com> <4F61F5E6.8060509@zytor.com> <20120315140708.GA3395@srcf.ucam.org> In-Reply-To: <20120315140708.GA3395@srcf.ucam.org> X-Enigmail-Version: 1.3.5 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 03/15/2012 07:07 AM, Matthew Garrett wrote: > > I have a report of a system that fails to boot with an MCE during EFI > setup. The memory range is marked reserved and claims not to support any > caching type, which I think probably translates as "Don't do anything to > this region ever". > In other words, "don't map me"... not something we really support at the moment, but perhaps we should; at least until we find systems in the field that break with that constraint :( -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.