From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261735AbULUMbu (ORCPT ); Tue, 21 Dec 2004 07:31:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261737AbULUMbu (ORCPT ); Tue, 21 Dec 2004 07:31:50 -0500 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:36769 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S261735AbULUMbs (ORCPT ); Tue, 21 Dec 2004 07:31:48 -0500 Date: Tue, 21 Dec 2004 12:31:46 +0000 From: Matthew Wilcox To: Benjamin Herrenschmidt Cc: Jesse Barnes , linux-pci@atrey.karlin.mff.cuni.cz, Greg KH , Linux Kernel list , Bjorn Helgaas , willy@debian.org Subject: Re: [PATCH] add PCI API to sysfs Message-ID: <20041221123146.GA16109@parcelfarce.linux.theplanet.co.uk> References: <200412201450.47952.jbarnes@engr.sgi.com> <20041220225817.GA21404@kroah.com> <200412201501.12575.jbarnes@engr.sgi.com> <1103613121.21771.28.camel@gaston> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1103613121.21771.28.camel@gaston> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 21, 2004 at 08:12:01AM +0100, Benjamin Herrenschmidt wrote: > treat all busses of a domain the same, but it leaves us with the > necessary flexibility for setups with bridges that can remap the legacy > space or that kind of thing. Do any such bridges exist? I've never heard of them. io space accesses are implemented by the host bridge, so I think the most generic we need to support is one per host bridge, ie root bus. -- "Next the statesmen will invent cheap lies, putting the blame upon the nation that is attacked, and every man will be glad of those conscience-soothing falsities, and will diligently study them, and refuse to examine any refutations of them; and thus he will by and by convince himself that the war is just, and will thank God for the better sleep he enjoys after this process of grotesque self-deception." -- Mark Twain