From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.33)
	id 1CSKS0-000423-J6
	for qemu-devel@nongnu.org; Thu, 11 Nov 2004 14:17:45 -0500
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.33)
	id 1CSKRu-0003z8-9R
	for qemu-devel@nongnu.org; Thu, 11 Nov 2004 14:17:39 -0500
Received: from [199.232.76.173] (helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.33) id 1CSKRt-0003vz-PA
	for qemu-devel@nongnu.org; Thu, 11 Nov 2004 14:17:37 -0500
Received: from [195.184.98.160] (helo=virtualhost.dk)
	by monty-python.gnu.org with esmtp (TLSv1:DES-CBC3-SHA:168)
	(Exim 4.34) id 1CSKHv-0005aV-Ir
	for qemu-devel@nongnu.org; Thu, 11 Nov 2004 14:07:19 -0500
Received: from [62.242.22.158] (helo=zx2000.home.kernel.dk)
	by virtualhost.dk with esmtp (Exim 3.36 #1) id 1CSKHw-0001ME-00
	for qemu-devel@nongnu.org; Thu, 11 Nov 2004 20:07:20 +0100
Received: from axboe by zx2000.home.kernel.dk with local (Exim 4.30)
	id 1CSKHR-0003C0-So
	for qemu-devel@nongnu.org; Thu, 11 Nov 2004 20:06:49 +0100
Date: Thu, 11 Nov 2004 20:06:49 +0100
From: Jens Axboe <qemu@kernel.dk>
Subject: Re: [Qemu-devel] enabling bus-master IDE driver
Message-ID: <20041111190649.GE11488@suse.de>
References: <BAY24-F27Q1WE9ql2Rk000265a2@hotmail.com>
	<20041107092132.GC29120@suse.de> <20041107093842.GD29120@suse.de>
	<200411071301.37636.hetz@softier.com>
	<20041107111655.GG29120@suse.de> <4193A177.1030308@brittainweb.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <4193A177.1030308@brittainweb.org>
Sender: Jens Axboe <axboe@suse.de>
Reply-To: qemu-devel@nongnu.org
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: qemu-devel@nongnu.org

On Thu, Nov 11 2004, Jason Brittain wrote:
> I just pulled the latest source from CVS (today's), and tried
> looking at DMA again.
> 
> Host: Linux 2.6 (Fedora Core 2)
> Guest: XP corp.
> It still says the primary IDE channel is in PIO mode, and
> doesn't seem any faster.
> 
> Host: Linux 2.6 (Fedora Core 2)
> Guest: Linux 2.6
> hdparm now reports that DMA is on for /dev/hda, and I can also
> turn it on and off.  With it on, it's about twice as fast as
> it is with it off.  So, this seems to work.

If I could install XP, I could take a look. But it will boot for me
after install, just hangs. If I restart qemu, it complains about a bad
boot loader.

If I get time I'll look into this.

-- 
Jens Axboe