Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755454Ab0DISzS (ORCPT ); Fri, 9 Apr 2010 14:55:18 -0400 Received: from imr1.ericy.com ([198.24.6.9]:45690 "EHLO imr1.ericy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755393Ab0DISzP (ORCPT ); Fri, 9 Apr 2010 14:55:15 -0400 Subject: Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 as well as x86_32 From: Guenter Roeck Reply-To: guenter.roeck@ericsson.com To: "H. Peter Anvin" CC: Yinghai , Linus Torvalds , Bjorn Helgaas , Thomas Gleixner , Ingo Molnar , "linux-pci@vger.kernel.org" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , Andy Isaacson , Thomas Renninger In-Reply-To: <4BBF70BC.3080809@zytor.com> References: <20100407210628.28364.96982.stgit@bob.kio> <201004071705.07176.bjorn.helgaas@hp.com> <4BBD13C3.2060404@oracle.com> <201004091004.39857.bjorn.helgaas@hp.com> <4BBF5987.3010100@zytor.com> <4BBF626A.3060800@oracle.com> <4BBF70BC.3080809@zytor.com> Content-Type: text/plain Organization: Ericsson Date: Fri, 9 Apr 2010 11:55:57 -0700 Message-ID: <1270839357.1477.758.camel@groeck-laptop> MIME-Version: 1.0 X-Mailer: Evolution 2.26.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1005 Lines: 30 On Fri, 2010-04-09 at 14:23 -0400, H. Peter Anvin wrote: > [Adding Guenter Roeck as he was commenting on something writing to the > VGA area...] > > On 04/09/2010 10:22 AM, Yinghai wrote: > > > > then please check this one > > > > update e820 at first, and later put them resource tree, but give pci BAR chance to claim > > the range, before assign unassigned resources. > > > > in case some system doesn't have VGA, and use [0xa0000, ..] for mmio of some other pci devices. > > > > Do we have any evidence of any such system? > > Either which way, the patch looks saner... > Yes, we have a system which does not have VGA and uses the VGA memory space for another device. I don't know exactly what for, but I can find out if it is relevant. Guenter -- 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/