From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261595AbVFHUMg (ORCPT ); Wed, 8 Jun 2005 16:12:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261586AbVFHUMg (ORCPT ); Wed, 8 Jun 2005 16:12:36 -0400 Received: from mail.linicks.net ([217.204.244.146]:56581 "EHLO linux233.linicks.net") by vger.kernel.org with ESMTP id S261595AbVFHUMa (ORCPT ); Wed, 8 Jun 2005 16:12:30 -0400 From: Nick Warne To: Dave Jones , linux-kernel@vger.kernel.org Subject: Re: mtrr question Date: Wed, 8 Jun 2005 21:12:20 +0100 User-Agent: KMail/1.8.1 References: <200506081917.09873.nick@linicks.net> <200506082047.13914.nick@linicks.net> <20050608195336.GL876@redhat.com> In-Reply-To: <20050608195336.GL876@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200506082112.20194.nick@linicks.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 08 June 2005 20:53, Dave Jones wrote: > Maybe. I don't use non-free drivers, so I have no idea > what nvidia are/aren't doing in their driver. > > I'd suggest trying the nvidia forums. No need ;-). You helped me pinpoint it... I went for it and ran manually: bash-2.05b# echo "base=0xD0000000 size=0x4000000 type=write-combining" >| /proc/mtrr bash-2.05b# cat /proc/mtrr reg00: base=0x00000000 ( 0MB), size=1024MB: write-back, count=1 reg01: base=0x40000000 (1024MB), size= 256MB: write-back, count=1 reg02: base=0xd0000000 (3328MB), size= 64MB: write-combining, count=1 reg05: base=0xc0000000 (3072MB), size= 256MB: write-combining, count=1 Thanks for help Dave... very much appreciated. I will look back and use Linux kernel module next build - I want things be nice and free too. Nick -- "When you're chewing on life's gristle, Don't grumble, Give a whistle..."