Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932385Ab3DYBwJ (ORCPT ); Wed, 24 Apr 2013 21:52:09 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:21980 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932261Ab3DYBwH (ORCPT ); Wed, 24 Apr 2013 21:52:07 -0400 Message-ID: <51788C24.9020608@oracle.com> Date: Thu, 25 Apr 2013 09:51:32 +0800 From: Zhenzhong Duan Reply-To: zhenzhong.duan@oracle.com Organization: oracle User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130328 Thunderbird/17.0.5 MIME-Version: 1.0 To: Jean Delvare CC: "Luck, Tony" , Andrew Morton , linux-kernel , "Yu, Fenghua" Subject: Re: memcpy_fromio in dmi_scan.c References: <1366636689.4503.35.camel@chaos.site> <5175FF0F.9050206@oracle.com> <1366702122.4667.11.camel@chaos.site> <3908561D78D1C84285E8C5FCA982C28F1EA52ED3@ORSMSX104.amr.corp.intel.com> <1366831328.4618.476.camel@chaos.site> In-Reply-To: <1366831328.4618.476.camel@chaos.site> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Source-IP: acsinet21.oracle.com [141.146.126.237] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 510 Lines: 14 On 2013-04-25 03:22, Jean Delvare wrote: > What is strange is that the call to memcpy_fromio was added a long > time ago, long before dmi_scan was enabled on ia64. I think memcpy_fromio is used to copy bios data to a mem buffer to speed up read access. zduan -- 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/