Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755889AbXLRVsa (ORCPT ); Tue, 18 Dec 2007 16:48:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754114AbXLRVsK (ORCPT ); Tue, 18 Dec 2007 16:48:10 -0500 Received: from smtp2.linux-foundation.org ([207.189.120.14]:55426 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753926AbXLRVsI (ORCPT ); Tue, 18 Dec 2007 16:48:08 -0500 Date: Tue, 18 Dec 2007 13:46:56 -0800 (PST) From: Linus Torvalds To: Ivan Kokshaysky cc: Chuck Ebbert , linux-kernel , Daniel Ritz , Greg KH Subject: Re: PCI resource problems caused by improper address rounding In-Reply-To: <20071219002349.A12278@jurassic.park.msu.ru> Message-ID: References: <47671377.6000405@redhat.com> <47680489.6040809@redhat.com> <20071218202234.GA24525@twiddle.net> <20071219002349.A12278@jurassic.park.msu.ru> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1049 Lines: 29 On Wed, 19 Dec 2007, Ivan Kokshaysky wrote: > > Doh. Let's fix the kernel first... > > Does this make any difference? (the patch is self explaining ;-) Heh, indeed. Good catch - that Prefetchable memory behind bridge: 0000000000000000-000000000fffffff on device 00:01.0 does look totally broken, and it would make more sense if it matched what the device has (and what /proc/iomem resports). That said, Intel bridges tend to be transparent even when they *claim* normal decode, so I wonder whether it actually matters in this case. But your patch looks very obviously right. So maybe the rest of the kernel and X both already did everything right, and it was just this stupid bridge setup thing that was broken (and forcing the IOMEM resource to below the 4G mark just hid it). Linus -- 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/