Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267856AbUIHOIz (ORCPT ); Wed, 8 Sep 2004 10:08:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267615AbUIHOHe (ORCPT ); Wed, 8 Sep 2004 10:07:34 -0400 Received: from the-village.bc.nu ([81.2.110.252]:3752 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S269169AbUIHOEu (ORCPT ); Wed, 8 Sep 2004 10:04:50 -0400 Subject: Re: multi-domain PCI and sysfs From: Alan Cox To: Jon Smirl Cc: Jesse Barnes , "David S. Miller" , willy@debian.org, Linux Kernel Mailing List In-Reply-To: <9e47339104090723012190c73a@mail.gmail.com> References: <9e4733910409041300139dabe0@mail.gmail.com> <200409072115.09856.jbarnes@engr.sgi.com> <20040907211637.20de06f4.davem@davemloft.net> <200409072125.41153.jbarnes@engr.sgi.com> <9e47339104090723012190c73a@mail.gmail.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1094648523.11723.13.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2) Date: Wed, 08 Sep 2004 14:02:04 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1326 Lines: 31 On Mer, 2004-09-08 at 07:01, Jon Smirl wrote: > X on GL is going to eliminate all device access from X. Everything Hardly. > will be handled from the OpenGL layer. When everything is finished Nope. It might change the access model for some user space applications. > Where is the PCI segment base address stored in the PCI driver > structures? I'm still having trouble with the fact that the PCI driver > does not have a clear structure representing a PCI segment. Shouldn't > there be a structure corresponding to a segment? Who says PCI is a top level bus. You can have PCI bridges on a different top level bus on some systems - totally independant. Not sure if you can hot plug PCI root bridges on any parisc boxes but that would sure be fun. > >From what I understand right now the SN2 machine can not have two > active VGA cards since it does not have two PCI segments. Without two > segments there is no way to tell the legacy addresses apart. Some of the NUMA x86 boxes have multiple I/O spaces too. So your I/O address effectively includes a "system node" section. - 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/