Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756251AbYH3TmP (ORCPT ); Sat, 30 Aug 2008 15:42:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752979AbYH3TmA (ORCPT ); Sat, 30 Aug 2008 15:42:00 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:42438 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752887AbYH3Tl7 (ORCPT ); Sat, 30 Aug 2008 15:41:59 -0400 Date: Sat, 30 Aug 2008 12:41:04 -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: <86802c440808301226h1e7a9bb6g721ecdb0f93c5220@mail.gmail.com> Message-ID: References: <200808292157.24179.rjw@sisk.pl> <200808300030.32905.rjw@sisk.pl> <86802c440808301107n4561e815ldf53183c92a7bc93@mail.gmail.com> <86802c440808301226h1e7a9bb6g721ecdb0f93c5220@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: 1102 Lines: 28 On Sat, 30 Aug 2008, Yinghai Lu wrote: > > AMD CPU/NB (quad core aka fam 10h later) has MSR to state MMCONFIG, and > the ATI bridge BAR that have same address for MMCONFIG not even have > chance to decode that, because NB intercept that already. Ok, so it's similar to the local APIC in that respect (and presumably IO APIC too, I haven't checked). But that still just implies that the BAR probably means something else totally, and the fact that it happens to have the same value as the MCFG is just random luck. > it seems ATI chipset doesn't have public version of doc...like reg > info and BIOS/Kernel porting guide. Yeah, I'm not finding anything either. The 690G databook that Rafael pointed to does mention the config registers in passing, but it's really just about electricals (pin setup etc). No BIOS writers guide indeed.. 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/