From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762589AbZC1Bbb (ORCPT ); Fri, 27 Mar 2009 21:31:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760181AbZC1BbD (ORCPT ); Fri, 27 Mar 2009 21:31:03 -0400 Received: from vms173005pub.verizon.net ([206.46.173.5]:26677 "EHLO vms173005pub.verizon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757500AbZC1BbA (ORCPT ); Fri, 27 Mar 2009 21:31:00 -0400 Date: Fri, 27 Mar 2009 21:30:53 -0400 (EDT) From: Len Brown X-X-Sender: lenb@localhost.localdomain To: Matthew Garrett Cc: linux-acpi@vger.kernel.org, Linux Kernel Mailing List Subject: Re: [PATCH] ACPI: make some IO ports off-limits to AML In-reply-to: <20090204061505.GD28321@srcf.ucam.org> Message-id: References: <20090204061505.GD28321@srcf.ucam.org> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-version: 1.0 Content-type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 4 Feb 2009, Matthew Garrett wrote: > On Tue, Feb 03, 2009 at 10:59:43PM -0500, Len Brown wrote: > > > Start using this interface to prevent AML from accessing > > some well known IO addresses that the OS "owns". > > It might be nice to extend this to cover the other ports listed at > http://www.microsoft.com/whdc/archive/BIOSAML.mspx if (and only if) the > firmware requested _OSI("Windows 2001") or later. Right. We reverted this initialization-time check for 2.6.29 b/c it had false positives of opregions that were never used. For 2.6.30 we replaced it with a run-time check, and the check follows the compatibility rules referenced above. http://git.kernel.org/?p=linux/kernel/git/lenb/linux-acpi-2.6.git;a=commitdiff;h=7f0719039085cc40114abce84cf29fe57da226f4 cheers, Len Brown, Intel Open Source Technology Center