Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758179AbXEWVmb (ORCPT ); Wed, 23 May 2007 17:42:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755560AbXEWVmX (ORCPT ); Wed, 23 May 2007 17:42:23 -0400 Received: from srv5.dvmed.net ([207.36.208.214]:37443 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755293AbXEWVmX (ORCPT ); Wed, 23 May 2007 17:42:23 -0400 Message-ID: <4654B530.2050705@pobox.com> Date: Wed, 23 May 2007 17:42:08 -0400 From: Jeff Garzik User-Agent: Thunderbird 1.5.0.10 (X11/20070302) MIME-Version: 1.0 To: Jesse Barnes CC: Alan Cox , Linus Torvalds , Robert Hancock , Olivier Galibert , linux-kernel , Andi Kleen , Chuck Ebbert , Len Brown Subject: Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI motherboard resources References: <4635510D.4060103@shaw.ca> <4654AD91.1030808@pobox.com> <20070523223513.7dbb89f4@the-village.bc.nu> <200705231438.03910.jbarnes@virtuousgeek.org> In-Reply-To: <200705231438.03910.jbarnes@virtuousgeek.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.3 (----) X-Spam-Report: SpamAssassin version 3.1.8 on srv5.dvmed.net summary: Content analysis details: (-4.3 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1167 Lines: 27 Jesse Barnes wrote: > On Wednesday, May 23, 2007 2:35 pm Alan Cox wrote: >>> One of the reasons why hardware vendors want to move away from >>> traditional accesses is to be able to use the larger config space >>> in PCI-Express, rather than being locked into the 256-byte legacy >>> PCI config space. >> Mostly for treacherous computing extensions where subsets of the >> config space can only be accessed by signed machines blessed by your >> favourite movie company and video card vendor... > > I hate "trusted" platform garbage as much as the next guy > (where "trusted" means the actual user can't trust it, just the > seller), but I think there are legitimate uses of extended space as > well, PCIe AER uses it iirc, so don't dismiss it on those grounds. :) Indeed. It's just a register space. Assuming one register space is "more evil" than another, simply because it is bigger, is.. well.. silly. Jeff - 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/