From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1FiIBN-00063j-Ar
	for qemu-devel@nongnu.org; Mon, 22 May 2006 17:43:21 -0400
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1FiIBM-00063C-QL
	for qemu-devel@nongnu.org; Mon, 22 May 2006 17:43:20 -0400
Received: from [199.232.76.173] (helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1FiIBM-000636-MF
	for qemu-devel@nongnu.org; Mon, 22 May 2006 17:43:20 -0400
Received: from [84.96.92.61] (helo=sMtp.neuf.fr)
	by monty-python.gnu.org with esmtp (Exim 4.52) id 1FiIFR-0002tN-3J
	for qemu-devel@nongnu.org; Mon, 22 May 2006 17:47:33 -0400
Received: from [84.99.204.133] by sp604002mt.gpm.neuf.ld
	(Sun Java System Messaging Server 6.2-5.05 (built Feb 16 2006))
	with ESMTP id <0IZO00GPFS2X6Z50@sp604002mt.gpm.neuf.ld> for
	qemu-devel@nongnu.org; Mon, 22 May 2006 23:37:46 +0200 (CEST)
Date: Mon, 22 May 2006 23:37:14 +0200
From: Fabrice Bellard <fabrice@bellard.org>
Subject: Re: [Qemu-devel] [PATCH 1/5] single step with no IRQs and timers
In-reply-to: <446F8396.2000607@windriver.com>
Message-id: <44722F0A.8070303@bellard.org>
MIME-version: 1.0
Content-type: text/plain; charset=us-ascii; format=flowed
Content-transfer-encoding: 7BIT
References: <446F8396.2000607@windriver.com>
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,

I agree that the feature is useful, but I am not sure yet if I will 
apply as is. I am adding support in QEMU for deterministic execution and 
your patch won't be needed once this new feature is released.

BTW, why do you stop real time timers ? These timers are only used for 
things which do not interfere with the VM (such as VGA refresh).

Fabrice.

Jason Wessel wrote:
> 
> This patch adds the functionality to the gdb-stub to single step with 
> the IRQs and timers disabled.  It greatly improves gdb's ability to 
> perform run control while running a linux kernel and stepping off of 
> breakpoints or stepping into certain types of functions.  I have also 
> included individual controls for IRQs and timers to restore the original 
> behavior, since it is useful as well.
> 
> signed-off-by: jason.wessel@windriver.com
> 
> Jason.