Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751993Ab0L1UM1 (ORCPT ); Tue, 28 Dec 2010 15:12:27 -0500 Received: from terminus.zytor.com ([198.137.202.10]:56619 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750837Ab0L1UM0 (ORCPT ); Tue, 28 Dec 2010 15:12:26 -0500 Message-ID: <4D1A449F.50002@zytor.com> Date: Tue, 28 Dec 2010 12:12:15 -0800 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101209 Fedora/3.1.7-0.35.b3pre.fc14 Thunderbird/3.1.7 MIME-Version: 1.0 To: Shaohua Li CC: Len Brown , Jack Steiner , Henrique de Moraes Holschuh , "tony.luck@gmail.com" , "linux-acpi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "gbeshers@sgi.com" Subject: Re: [PATCH] ACPI: use ioremap_cache() References: <20101214220932.GA1206@sgi.com> <20101215024136.GB19601@sgi.com> <20101215164635.GA27373@sgi.com> <1293506460.10593.43.camel@sli10-conroe> <4D195AFF.9020106@zytor.com> <1293512540.10593.46.camel@sli10-conroe> In-Reply-To: <1293512540.10593.46.camel@sli10-conroe> 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: 651 Lines: 20 On 12/27/2010 09:02 PM, Shaohua Li wrote: >> >> For x86, that is handled by the MTRRs; > does it cause any problem if the pat and mtrr doesn't match? > No, the interaction rules between PAT and MTRR are well-defined; see the SDM 3A. If they weren't we would have huge problems with SMM. -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/