From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933642Ab0GOQH7 (ORCPT ); Thu, 15 Jul 2010 12:07:59 -0400 Received: from rcsinet10.oracle.com ([148.87.113.121]:39325 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933330Ab0GOQH5 (ORCPT ); Thu, 15 Jul 2010 12:07:57 -0400 Date: Thu, 15 Jul 2010 09:07:46 -0700 From: Randy Dunlap To: tanaka Cc: linux-kernel@vger.kernel.org Subject: Re: Please teach me X86 I/O port 0x61 Message-Id: <20100715090746.fdfce533.randy.dunlap@oracle.com> In-Reply-To: <20100715150036.22283.qmail@web100113.mail.kks.yahoo.co.jp> References: <20100715150036.22283.qmail@web100113.mail.kks.yahoo.co.jp> Organization: Oracle Linux Eng. X-Mailer: Sylpheed 2.7.1 (GTK+ 2.16.6; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Source-IP: acsmt354.oracle.com [141.146.40.154] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090208.4C3F325B.0249:SCFMA4539814,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 16 Jul 2010 00:00:36 +0900 (JST) tanaka wrote: > Dear all. > > I investigate about NMI kernel messages. > Linux kernel read 0x61 address using inb(61h). > > I search a amd opteron cpu following manuals. > but I do not find explanation of 0x61 address. > > http://support.amd.com/us/psearch/Pages/psearch.aspx?type=2.1&product=2.1.4&contentType=Tech+Doc+Processor&ostype=&keywords=&items=20 > > Could you teach me a 0x61 address of X86 arch > Hi, IO port 0x61 (NMI Status & Control register) is not CPU-specific on x86. It's more of a platform thing. Intel describes it in ICH (chipset) specs, e.g., ICH7 spec, section 10.7.1. Please try that and see if it answers your questions. --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code ***