Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754974AbXIEL1V (ORCPT ); Wed, 5 Sep 2007 07:27:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752697AbXIEL1N (ORCPT ); Wed, 5 Sep 2007 07:27:13 -0400 Received: from poesci.dolphinics.no ([81.175.23.36]:58051 "EHLO poesci.dolphinics.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752670AbXIEL1N (ORCPT ); Wed, 5 Sep 2007 07:27:13 -0400 X-Greylist: delayed 1305 seconds by postgrey-1.27 at vger.kernel.org; Wed, 05 Sep 2007 07:27:13 EDT To: "H. Peter Anvin" Cc: Robert Richter , Andreas Herrmann , Arjan van de Ven , patches@x86-64.org, linux-kernel@vger.kernel.org Subject: Re: [patches] [patch 3/5] x86: Add PCI extended config space access for AMD Barcelona References: <20070903081736.288288000@amd.com> <20070903081736.588599000@amd.com> <20070903013157.72c94891@laptopd505.fenrus.org> <20070903091718.GB22144@alberich.amd.com> <20070903043319.7573875b@laptopd505.fenrus.org> <20070903154734.GC22086@alberich.amd.com> <46DE45A2.40403@zytor.com> <20070905084427.GE6409@erda.amd.com> <46DE80F0.4000706@zytor.com> From: Arne Georg Gleditsch Date: Wed, 05 Sep 2007 13:05:25 +0200 In-Reply-To: <46DE80F0.4000706@zytor.com> (H. Peter Anvin's message of "Wed\, 05 Sep 2007 11\:12\:00 +0100") Message-ID: User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/23.0.0 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 764 Lines: 17 "H. Peter Anvin" writes: > You're missing the point. How will the PCI bus transactions be > different when using MMCONFIG versus your extended CF8 version? Conceivably this is useful if the IO hub does not support MMCONFIG accesses. The AMD 8111 does not, as far as I can see. At least I have an Opteron system where MMCONFIG is not supported, and I assume it's because the 8111 doesn't provide it. I don't know if this is going to be a realistic scenario for Barcelona systems. -- Arne. - 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/