Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754681AbXLWGEt (ORCPT ); Sun, 23 Dec 2007 01:04:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751296AbXLWGEm (ORCPT ); Sun, 23 Dec 2007 01:04:42 -0500 Received: from terminus.zytor.com ([198.137.202.10]:54091 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751200AbXLWGEl (ORCPT ); Sun, 23 Dec 2007 01:04:41 -0500 Message-ID: <476DF8B2.2060608@zytor.com> Date: Sat, 22 Dec 2007 21:57:06 -0800 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Jeff Garzik CC: Linus Torvalds , Arjan van de Ven , linux-kernel@vger.kernel.org, gregkh@suse.de, linux-pci@atrey.karlin.mff.cuni.cz, Benjamin Herrenschmidt Subject: Re: [patch] Make MMCONFIG space (extended PCI config space) a driver opt-in issue References: <20071222043139.0cd59804@laptopd505.fenrus.org> <476D1D16.5090703@garzik.org> <20071222064719.73fdd9a4@laptopd505.fenrus.org> <476DB95F.3090801@garzik.org> <476DE07A.4000204@garzik.org> In-Reply-To: <476DE07A.4000204@garzik.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 666 Lines: 17 Jeff Garzik wrote: > > 2) It is legal for PCI-Express to put capabilities anywhere in PCI > config space, including extended config space. (I hope our PCI cap > walking code checks for overruns...) > Uh, not really. The classical capability format only has 8-bit addresses, and the spec requires that all extended config space that is used be claimed by extended capabilities -- a different format chain. -hpa -- 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/