From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263965AbTLUTXm (ORCPT ); Sun, 21 Dec 2003 14:23:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263953AbTLUTXm (ORCPT ); Sun, 21 Dec 2003 14:23:42 -0500 Received: from ns.virtualhost.dk ([195.184.98.160]:41624 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S263965AbTLUTXk (ORCPT ); Sun, 21 Dec 2003 14:23:40 -0500 Date: Sun, 21 Dec 2003 20:23:38 +0100 From: Jens Axboe To: linux kernel mailing list Subject: Re: 2.6 vs 2.4 regression when running gnomemeeting Message-ID: <20031221192338.GW2069@suse.de> References: <1071864709.1044.172.camel@localhost> <1071885178.1044.227.camel@localhost> <3FE3B61C.4070204@cyberone.com.au> <200312201355.08116.kernel@kolivas.org> <1071891168.1044.256.camel@localhost> <3FE3C6FC.7050401@cyberone.com.au> <20031220222034.GA2040@merlin.emma.line.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031220222034.GA2040@merlin.emma.line.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Dec 20 2003, Matthias Andree wrote: > On Sat, 20 Dec 2003, Nick Piggin wrote: > > > >/dev/hda: > > >multcount = 0 (off) > > >IO_support = 0 (default 16-bit) > > >unmaskirq = 0 (off) > > >using_dma = 1 (on) > > >keepsettings = 0 (off) > > >readonly = 0 (off) > > >readahead = 256 (on) > > >geometry = 65535/16/63, sectors = 117210240, start = 0 > > > > > > > This might be a problem - try turning unmaskirq on, and possibly > > 32-bit IO support on (hdparm -u1 -c1 /dev/hda). I think there is > > a remote possibility that doing this will corrupt your data just > > Does 32-bit I/O support make a difference for DMA transfers at all or > just for PIO? It's just for PIO. -- Jens Axboe