From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1767172AbXDTS3K (ORCPT ); Fri, 20 Apr 2007 14:29:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1767174AbXDTS3K (ORCPT ); Fri, 20 Apr 2007 14:29:10 -0400 Received: from smtp1.linux-foundation.org ([65.172.181.25]:48785 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1767172AbXDTS3I (ORCPT ); Fri, 20 Apr 2007 14:29:08 -0400 Date: Fri, 20 Apr 2007 11:28:42 -0700 (PDT) From: Linus Torvalds To: Jesse Barnes cc: Ivan Kokshaysky , Greg KH , Adam Jackson , linux-kernel@vger.kernel.org Subject: Re: PCI bridge range sizing bug In-Reply-To: <200704200932.52181.jesse.barnes@intel.com> Message-ID: References: <1175812632.17147.12.camel@localhost.localdomain> <20070420132352.A19232@jurassic.park.msu.ru> <200704200932.52181.jesse.barnes@intel.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 20 Apr 2007, Jesse Barnes wrote: > > Sounds good, hopefully reassigning the bridge resources won't cause too > much trouble. Do you have time to hack this up? If not, I could give > it a try, as long as ajax is willing to test... Actually, I would suggest we not do it automatically (because the need for it is just so low, and the downsides are potentially huge - there are just too many resources that are "hidden" from us through ACPI tricks and having hardware that doesn't actually expose their PCI resources fully through the normal PCI resource setup). So I'd suggest that at least initially, we could/should just make it a decision based on a command line flag like the "pci=assign-busses" thing is now (which forces bus *numbers* to be re-assigned regardless of how they were assigned by the firmware, not the actual resources). Because realistically, I don't think we'll see any common PC platform that actually needs it. Simply because I seriously doubt Windows reassignes bus resources either. Ivan, want to add some way to force that allocation (something like "pci=assign-bus-resources") Linus