Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757054AbXFNVVm (ORCPT ); Thu, 14 Jun 2007 17:21:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754202AbXFNVVS (ORCPT ); Thu, 14 Jun 2007 17:21:18 -0400 Received: from lucidpixels.com ([75.144.35.66]:56061 "EHLO lucidpixels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756516AbXFNVVR (ORCPT ); Thu, 14 Jun 2007 17:21:17 -0400 Date: Thu, 14 Jun 2007 17:21:16 -0400 (EDT) From: Justin Piszcz X-X-Sender: jpiszcz@p34.internal.lan To: Jesse Barnes cc: Pim Zandbergen , Andi Kleen , linux-kernel@vger.kernel.org, "Eric W. Biederman" Subject: Re: [PATCH] trim memory not covered by WB MTRRs In-Reply-To: <200706141418.42082.jbarnes@virtuousgeek.org> Message-ID: References: <200706071530.51552.jesse.barnes@intel.com> <4671992D.7060400@macroscoop.nl> <200706141418.42082.jbarnes@virtuousgeek.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: 1984 Lines: 64 On Thu, 14 Jun 2007, Jesse Barnes wrote: > On Thursday, June 14, 2007 1:26:07 Justin Piszcz wrote: >> On Thu, 14 Jun 2007, Pim Zandbergen wrote: >>> Thanks for this patch. I was having the exact same symptoms as >>> Justin Piszcz, on a different, but similar motherboard: >>> >>> Motherboard: GigaByte GA-G33-DS3R >>> BIOS rev: F2 >>> Chipset: Intel G33 >>> Memory: 8GB >>> Distro: Fedora 7 x86_64 >>> Kernel: kernel-2.6.21-1.3194.fc7 >>> >>> Building vanilla 2.6.22-rc4 with your patch solved the problem. >>> >>> I'm now seeing this in the syslog >>> >>> *************** >>> **** WARNING: likely BIOS bug >>> **** MTRRs don't cover all of memory, trimmed 196608 pages >>> *************** >>> >>> leaving me 7416672 kB of usable memory. >>> >>> If there's any way I can help with more info or testing, >>> then let me know. >>> >>> Thanks, >>> Pim > > Thanks for testing, Pim. Glad it works for you. Keep an eye out for > BIOS upgrades, the next version might fix it. > >> That's strange, I guess different chipsets 'chew' up different >> amounts of memory OR you have your DVT(?) (video-card >> memory/aperature) set to 256MB? I have mine set to 128MB, in top: >> >> Mem: 8039576k total, 6187304k used, 1852272k free, 696k >> buffers >> >> What type of memory are you using and what is your DVT set to? > > Different BIOSes will map things differently, so I'd expect differences > in the "trimmmed xxx pages" message across machines. But yeah, BIOS > config options can also affect things, in particular I've heard that > the fan control options change MTRR setup significantly. > > Jesse > To Intel, When will HECI be supported via the kernel? When it becomes supported, would that alter the MTRR map at all? 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/