Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757401AbXKKXn3 (ORCPT ); Sun, 11 Nov 2007 18:43:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755126AbXKKXnW (ORCPT ); Sun, 11 Nov 2007 18:43:22 -0500 Received: from ausc60ps301.us.dell.com ([143.166.148.206]:63296 "EHLO ausc60ps301.us.dell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752485AbXKKXnV (ORCPT ); Sun, 11 Nov 2007 18:43:21 -0500 DomainKey-Signature: s=smtpout; d=dell.com; c=nofws; q=dns; b=NY5VCyCWsYa3YErZcJ3KrUMYN9xdmv/3wNxOJQuDjv1cyrIFynb5zEzq8mp4Co+oS5gILPb8SXh06SJgkbJaiQBYgvQQCYMER0QLRa/0POKjZ3+RBj5Gpx9JexR2UOmP; X-IronPort-AV: E=Sophos;i="4.21,402,1188795600"; d="scan'208";a="412549876" Date: Sun, 11 Nov 2007 17:43:13 -0600 From: Matt Domsch To: Alan Cox Cc: Keith Chew , linux-kernel Subject: Re: PCI card initialisation at boot Message-ID: <20071111234313.GB15880@auslistsprd01.us.dell.com> References: <20f65d530711110722k3d2bf658hb44ceaa036b9962c@mail.gmail.com> <20071111164644.7b2c743c@the-village.bc.nu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071111164644.7b2c743c@the-village.bc.nu> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1106 Lines: 24 On Sun, Nov 11, 2007 at 04:46:44PM +0000, Alan Cox wrote: > Linux by default uses the BIOS resource assignments. It doesn't know > where those came from other than "the BIOS". Slightly tangential, but I'm starting to hear requests to have the OS re-assign resources when it might make better sense. For example, if you have a graphics card with a 1GB memory allocation, the BIOS may assign it into address ranges below 4GB because it doesn't know if the OS will be 32-bit or 64-bit capable. But, it would be beneficial to have it located above 4GB, and to fill in the (new) hole below 4GB with RAM. Linux right now doesn't have a way to do this. It will assign resources for cards that the BIOS left unassigned, but won't intentionally move resources. -- Matt Domsch Linux Technology Strategist, Dell Office of the CTO linux.dell.com & www.dell.com/linux - 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/