From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 29 Jan 2003 11:46:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 29 Jan 2003 11:46:38 -0500 Received: from noodles.codemonkey.org.uk ([213.152.47.19]:56259 "EHLO noodles.internal") by vger.kernel.org with ESMTP id ; Wed, 29 Jan 2003 11:46:37 -0500 Date: Wed, 29 Jan 2003 16:52:48 +0000 From: Dave Jones To: Stephan von Krawczynski , Mark Hahn , linux-kernel Subject: Re: no more MTRRs available ? Message-ID: <20030129165248.GC1856@codemonkey.org.uk> Mail-Followup-To: Dave Jones , Stephan von Krawczynski , Mark Hahn , linux-kernel References: <20030129162354.55f2ace4.skraw@ithnet.com> <20030129164552.182e0cb8.skraw@ithnet.com> <20030129161446.GB32294@codemonkey.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030129161446.GB32294@codemonkey.org.uk> User-Agent: Mutt/1.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 29, 2003 at 04:14:46PM +0000, Dave Jones wrote: > > # cat /proc/mtrr > > reg00: base=0x00000000 ( 0MB), size=2048MB: write-back, count=1 > > reg01: base=0x80000000 (2048MB), size=1024MB: write-back, count=1 > > reg02: base=0xc0000000 (3072MB), size= 512MB: write-back, count=1 > > reg03: base=0xe0000000 (3584MB), size= 256MB: write-back, count=1 > > reg04: base=0xf0000000 (3840MB), size= 128MB: write-back, count=1 > > reg05: base=0xf7000000 (3952MB), size= 16MB: uncachable, count=1 > Due to this 16MB hole, your BIOS has to set up a write-back range > covering 2048-16 (2032MB). Dummies guide to maths. This should be 4096-16=4080 of course Dave -- | Dave Jones. http://www.codemonkey.org.uk | SuSE Labs