From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269085AbTGORVM (ORCPT ); Tue, 15 Jul 2003 13:21:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269106AbTGORVM (ORCPT ); Tue, 15 Jul 2003 13:21:12 -0400 Received: from mail.jlokier.co.uk ([81.29.64.88]:2198 "EHLO mail.jlokier.co.uk") by vger.kernel.org with ESMTP id S269085AbTGORVK (ORCPT ); Tue, 15 Jul 2003 13:21:10 -0400 Date: Tue, 15 Jul 2003 18:35:57 +0100 From: Jamie Lokier To: Gerd Knorr Cc: Linus Torvalds , Kernel List , Andi Kleen Subject: Re: [patch] vesafb fix Message-ID: <20030715173557.GB1491@mail.jlokier.co.uk> References: <20030715141023.GA14133@bytesex.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030715141023.GA14133@bytesex.org> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Gerd Knorr wrote: > * mtrr is enabled by default. That should improve the vesafb > performance alot. Also added a option to disable mtrr. There used to be a vesafb problem with MTRRs when the framebuffer had an odd size: 2.5MB of RAM (my laptop has this). It would create an MTRR for the first 0.5MB of the framebuffer, and then try to create another for the subsequent 2MB. The latter failed because it's not suitably aligned - i.e. there was a problem in th logic which splits non-power-of-two regions. Is that fixed these days? Cheers, -- Jamie