Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755083AbXLWKfY (ORCPT ); Sun, 23 Dec 2007 05:35:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752156AbXLWKfO (ORCPT ); Sun, 23 Dec 2007 05:35:14 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:55074 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751499AbXLWKfM (ORCPT ); Sun, 23 Dec 2007 05:35:12 -0500 Date: Sun, 23 Dec 2007 02:33:48 -0800 From: Arjan van de Ven To: Jeff Garzik Cc: Linus Torvalds , 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 Message-ID: <20071223023348.348608a8@laptopd505.fenrus.org> In-Reply-To: <476DE98F.2010009@garzik.org> References: <20071222043139.0cd59804@laptopd505.fenrus.org> <476D1D16.5090703@garzik.org> <20071222064719.73fdd9a4@laptopd505.fenrus.org> <476DB95F.3090801@garzik.org> <476DDFEE.3010009@garzik.org> <476DE98F.2010009@garzik.org> Organization: Intel X-Mailer: Claws Mail 3.0.2 (GTK+ 2.12.1; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1012 Lines: 17 > > 3) mmconfig might or might not be enabled, depending on which driver > is loaded, whether it called an API or not. > > Even LESS testing by hw vendors than #2. Maybe even "never" > > Inconsistent (config access depends on device) the "depends on device" is even true for Linux today. For us today, MMCONFIG isn't always used, it's used on a per device basis already; except that the per-device is both defined by the bios and our quirks.... (the mmconfig code already falls back to conf1 cycles in various cases) So I'm not entirely buying your argument. IN fact I'm not buying your "mixed is not tested at all" argument; while the statement may be true, it's not different than it is from Linux today... which is mixed. Just differently mixed I suppose. -- 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/