Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758647AbXEWVio (ORCPT ); Wed, 23 May 2007 17:38:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756278AbXEWVig (ORCPT ); Wed, 23 May 2007 17:38:36 -0400 Received: from outbound-mail-75.bluehost.com ([69.89.20.10]:48213 "HELO outbound-mail-75.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755240AbXEWVig (ORCPT ); Wed, 23 May 2007 17:38:36 -0400 From: Jesse Barnes To: Alan Cox Subject: Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI motherboard resources Date: Wed, 23 May 2007 14:37:58 -0700 User-Agent: KMail/1.9.6 Cc: Jeff Garzik , Linus Torvalds , Robert Hancock , Olivier Galibert , linux-kernel , Andi Kleen , Chuck Ebbert , Len Brown References: <4635510D.4060103@shaw.ca> <4654AD91.1030808@pobox.com> <20070523223513.7dbb89f4@the-village.bc.nu> In-Reply-To: <20070523223513.7dbb89f4@the-village.bc.nu> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200705231438.03910.jbarnes@virtuousgeek.org> X-Identified-User: {642:box128.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 76.102.120.196 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 986 Lines: 21 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. :) Jesse - 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/