Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759338AbXLSA5Y (ORCPT ); Tue, 18 Dec 2007 19:57:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756660AbXLSA5D (ORCPT ); Tue, 18 Dec 2007 19:57:03 -0500 Received: from mx1.redhat.com ([66.187.233.31]:43076 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759462AbXLSA5B (ORCPT ); Tue, 18 Dec 2007 19:57:01 -0500 Message-ID: <47686C09.1070602@redhat.com> Date: Tue, 18 Dec 2007 19:55:37 -0500 From: Chuck Ebbert Organization: Red Hat User-Agent: Thunderbird 1.5.0.12 (X11/20071019) MIME-Version: 1.0 To: Robert Hancock CC: Linus Torvalds , Richard Henderson , linux-kernel , Ivan Kokshaysky , Daniel Ritz , Greg KH , Keith Packard , Bjorn Helgaas Subject: Re: PCI resource problems caused by improper address rounding References: <47686197.6080807@shaw.ca> In-Reply-To: <47686197.6080807@shaw.ca> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 882 Lines: 22 On 12/18/2007 07:11 PM, Robert Hancock wrote: >> However, I wonder about that >> >> e0000000-efffffff : pnp 00:0b >> >> thing. I actually suspect that that whole allocation is literally >> *meant* for that 256MB graphics aperture, but the kernel explicitly >> avoids it because it's listed in the PnP tables. > > That is probably the MMCONFIG aperture, in that case any attempt to map > the graphics BAR there will have disastrous results. (This BIOS has an > MCFG table, though it looks like this Fedora kernel has MMCONFIG > disabled, so we can't tell what it actually contains.) > You can boot with "pci=mmconf" to enable it. -- 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/