From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1768396Ab2KOQNk (ORCPT ); Thu, 15 Nov 2012 11:13:40 -0500 Received: from 173-254-64-10.unifiedlayer.com ([173.254.64.10]:58302 "HELO oproxy11-pub.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1768352Ab2KOQNj (ORCPT ); Thu, 15 Nov 2012 11:13:39 -0500 Date: Thu, 15 Nov 2012 08:14:06 -0800 From: Jesse Barnes To: Henrique de Moraes Holschuh Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86/Sandy Bridge: reserve pages when integrated graphics is present Message-ID: <20121115081406.1b19940b@jbarnes-desktop> In-Reply-To: <20121115124711.GA31504@khazad-dum.debian.net> References: <1352925811-2598-1-git-send-email-jbarnes@virtuousgeek.org> <20121115124711.GA31504@khazad-dum.debian.net> X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.10; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 67.161.37.189 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 15 Nov 2012 10:47:11 -0200 Henrique de Moraes Holschuh wrote: > On Wed, 14 Nov 2012, Jesse Barnes wrote: > > + unsigned long bad_ranges[] = { > > + 0x20050000, > > + 0x20110000, > > + 0x20130000, > > + 0x20138000, > > + 0x40004000, > > Yikes. Can this be fixed through a microcode update? The kernel would > still need the workaround anyway, but at least you would be able to be quite > heavy-handed on it, and users could be warned of a better fix... Note the array should be called "bad pages" since it's just each page at that offset that we can't use. (In case you were worried we'd need to exclude everything between each pair of addresses or something.) -- Jesse Barnes, Intel Open Source Technology Center