From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1Lqpr1-0000Rl-JG
	for qemu-devel@nongnu.org; Mon, 06 Apr 2009 10:31:15 -0400
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1Lqpqw-0000QX-EV
	for qemu-devel@nongnu.org; Mon, 06 Apr 2009 10:31:14 -0400
Received: from [199.232.76.173] (port=43966 helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1Lqpqv-0000QK-NO
	for qemu-devel@nongnu.org; Mon, 06 Apr 2009 10:31:10 -0400
Received: from vsmtp01.dti.ne.jp ([202.216.231.136]:63283)
	by monty-python.gnu.org with esmtp (Exim 4.60)
	(envelope-from <kawasaki@juno.dti.ne.jp>) id 1Lqpqv-0008FW-1d
	for qemu-devel@nongnu.org; Mon, 06 Apr 2009 10:31:09 -0400
Received: from [192.168.1.22] (PPPa1996.e11.eacc.dti.ne.jp [124.255.93.226])
	by vsmtp01.dti.ne.jp (3.11v) with ESMTP AUTH id n36EV6Ks018431
	for <qemu-devel@nongnu.org>; Mon, 6 Apr 2009 23:31:07 +0900 (JST)
Message-ID: <49DA122E.9000704@juno.dti.ne.jp>
Date: Mon, 06 Apr 2009 23:31:10 +0900
From: Shin-ichiro KAWASAKI <kawasaki@juno.dti.ne.jp>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-2022-JP
Content-Transfer-Encoding: 7bit
Subject: [Qemu-devel] [FYI] sh: linux kernel without iotrap is available for
 better system emulation performance
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

Hi, SH4 developers.

It turns out that io trap is one of the reason of bad qemu-sh 'r2d' system
emulation performance.  To avoid this problem, 'noiotrap' kernel command
line option is added : http://news.gmane.org/gmane.linux.ports.sh.devel

The packaged zImage is available at this URL.
http://www.assembla.com/spaces/qemu-sh4/documents/b-tmCWiRmr3PiLeJe5afGb/download/sh-test-0.2.tar.bz2

Hope it helps!


Regards,
Shin-ichiro KAWASAKI