From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965824AbXCPSmz (ORCPT ); Fri, 16 Mar 2007 14:42:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753598AbXCPSmy (ORCPT ); Fri, 16 Mar 2007 14:42:54 -0400 Received: from mga01.intel.com ([192.55.52.88]:38023 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753596AbXCPSmx (ORCPT ); Fri, 16 Mar 2007 14:42:53 -0400 X-ExtLoop1: 1 X-IronPort-AV: i="4.14,293,1170662400"; d="scan'208"; a="213941351:sNHT233073183" From: Jesse Barnes To: Bjorn Helgaas Subject: Re: [PATCH 2.6.18] PCI: Turn pci_fixup_video into generic for embedded VGA Date: Fri, 16 Mar 2007 11:42:39 -0700 User-Agent: KMail/1.9.6 Cc: eiichiro.oiwa.nm@hitachi.com, akpm@osdl.org, tony.luck@intel.com, greg@kroah.com, "Alan Cox" , linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org References: <200609280936.02098.jesse.barnes@intel.com> <200703161120.46123.bjorn.helgaas@hp.com> In-Reply-To: <200703161120.46123.bjorn.helgaas@hp.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200703161142.39854.jesse.barnes@intel.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Friday, March 16, 2007 10:20 am Bjorn Helgaas wrote: > Are there really ia64 machines where we need to use the option ROM > copy at 0xC0000? If so, is this documented somewhere? I couldn't > find any mention in DIG64, EFI, or internal HP architecture specs. > > If we do need to use it, ia64 has a bit of a problem because on some > boxes, the 0xC0000 memory supports only cacheable access, the VGA > frame buffer at 0xA0000 supports only uncacheable access, and the > usual ia64 ioremap mapping is a 16MB page that covers both. Apparently Eichiro's machine needs it, and of course there are i386 and x86_64 machines that need it to, so it makes sense that it be generic. Jesse