Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763949AbXFENTP (ORCPT ); Tue, 5 Jun 2007 09:19:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758876AbXFENTA (ORCPT ); Tue, 5 Jun 2007 09:19:00 -0400 Received: from lucidpixels.com ([75.144.35.66]:49077 "EHLO lucidpixels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758872AbXFENS7 (ORCPT ); Tue, 5 Jun 2007 09:18:59 -0400 Date: Tue, 5 Jun 2007 09:18:58 -0400 (EDT) From: Justin Piszcz X-X-Sender: jpiszcz@p34.internal.lan To: Andi Kleen cc: "Eric W. Biederman" , Yinghai Lu , Alan Cox , Jesse Barnes , linux-kernel@vger.kernel.org Subject: Re: Intel's response Linux/MTRR/8GB Memory Support / Why doesn't the kernel realize the BIOS has problems and re-map appropriately? In-Reply-To: <20070605094623.GA23274@one.firstfloor.org> Message-ID: References: <200706011407.51779.jbarnes@virtuousgeek.org> <20070601211943.GO7217@one.firstfloor.org> <200706011441.57149.jbarnes@virtuousgeek.org> <20070604201823.7b7cb328@the-village.bc.nu> <86802c440706041759q1b2d528ex24b3de514d09d9ef@mail.gmail.com> <20070605094623.GA23274@one.firstfloor.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 811 Lines: 24 On Tue, 5 Jun 2007, Andi Kleen wrote: >> So the only safe thing we can do is not use memory that is not >> write-back cached. That we can positively detect and is a >> conservative action so if anything will work that will. > > Jesse wrote such a patch (or rather it limitted end_pfn), but it broke > the X server for so far unknown reasons. > > -Andi > So the best solution is for a patch/function that calculates the E820 memory map subtracts the non-cached memory and does the equivilant of append= in LILO config with the proper amount of memory? Justin. - 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/