Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756072AbYH3TPn (ORCPT ); Sat, 30 Aug 2008 15:15:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754610AbYH3TP3 (ORCPT ); Sat, 30 Aug 2008 15:15:29 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:50308 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754553AbYH3TP2 (ORCPT ); Sat, 30 Aug 2008 15:15:28 -0400 Date: Sat, 30 Aug 2008 12:14:02 -0700 (PDT) From: Linus Torvalds To: Yinghai Lu cc: "Rafael J. Wysocki" , Linux Kernel Mailing List , Jeff Garzik , Tejun Heo , Ingo Molnar , David Witbrodt , Andrew Morton , Kernel Testers Subject: Re: Linux 2.6.27-rc5: System boot regression caused by commit a2bd7274b47124d2fc4dfdb8c0591f545ba749dd In-Reply-To: Message-ID: References: <200808292157.24179.rjw@sisk.pl> <200808300030.32905.rjw@sisk.pl> <86802c440808301107n4561e815ldf53183c92a7bc93@mail.gmail.com> User-Agent: Alpine 1.10 (LFD 962 2008-03-14) 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: 1360 Lines: 36 On Sat, 30 Aug 2008, Linus Torvalds wrote: > > We simply shouldn't try to compare the BAR start with randomly chosen > things. Btw, looking at that bogus BAR#3 some more: I don't actually think it's even an MCFG resource. I think it's literally the resource that describes the HT window for the host bridge. So it's literally like the "root" resource - all external MMIO resources that go over HT have to be in that window. IOW, I'm starting to think that it's not even broken. It is probably perfectly real. It's not a "PCI bridge" in the sense that it doesn't bridge one PCI bus to another, but it's a host bridge, and it bridges the CPU memory accesses to another bus. The fact that the MCFG area happens to be at the start of that window is probably just a random detail. Does anybody know how to find chipset docs for AMD/ATI chipsets? I find CPU docs, and the GPU docs, but not the 790 chipset docs anywhere (yeah, it looks promising with a link that says "AMD 790FX Chipset Specifications", but the link just takes you to some trivial overview, not any actual specs. Anybody? 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/