Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760039AbXFBUL5 (ORCPT ); Sat, 2 Jun 2007 16:11:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754760AbXFBULu (ORCPT ); Sat, 2 Jun 2007 16:11:50 -0400 Received: from lucidpixels.com ([75.144.35.66]:44069 "EHLO lucidpixels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753268AbXFBULt (ORCPT ); Sat, 2 Jun 2007 16:11:49 -0400 Date: Sat, 2 Jun 2007 16:11:48 -0400 (EDT) From: Justin Piszcz X-X-Sender: jpiszcz@p34.internal.lan To: Andi Kleen cc: Venki Pallipadi , 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: <20070602092232.GP7217@one.firstfloor.org> Message-ID: References: <200706011407.51779.jbarnes@virtuousgeek.org> <20070601211943.GO7217@one.firstfloor.org> <200706011441.57149.jbarnes@virtuousgeek.org> <20070602010539.GA13512@linux-os.sc.intel.com> <20070602092232.GP7217@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: 1387 Lines: 38 On Sat, 2 Jun 2007, Andi Kleen wrote: >> I feel, having a silent/transparent workaround is not a good idea. With that > > If enough RAM is chopped off users will notice. They tend to complain > when they miss RAM. I don't like panic very much because for many > users it will be a show stopper (even when they are not blessed > with "quiet" boots like some distributions do) > > The message in dmesg could be also emphasized a bit with a little > ASCII art (but no tag in there) > > The problem I'm more worried about is if the system will be really > stable --- could it be that the memory controller is still > misconfigured and cause other stability issues? (we've had such > cases in the past). Also I'm not sure we can handle the case of > the MTRR wrong not at the end of memory but at the hole sanely. > > -Andi > So far I have been booting with mem=8832M and have run stress/loaded the memory subsystem pretty good; what other tests should I run? It'd be nice if we could pose some sort of solution/warning for the future so other people do not have to experience the same problems. What are the next steps? 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/