From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([208.118.235.92]:41456)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <gleb@redhat.com>) id 1UG4Jz-0006Uz-4t
	for qemu-devel@nongnu.org; Thu, 14 Mar 2013 05:19:36 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <gleb@redhat.com>) id 1UG4Ju-00005C-HX
	for qemu-devel@nongnu.org; Thu, 14 Mar 2013 05:19:35 -0400
Received: from mx1.redhat.com ([209.132.183.28]:4276)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <gleb@redhat.com>) id 1UG4Ju-00004z-8e
	for qemu-devel@nongnu.org; Thu, 14 Mar 2013 05:19:30 -0400
Date: Thu, 14 Mar 2013 11:19:19 +0200
From: Gleb Natapov <gleb@redhat.com>
Message-ID: <20130314091919.GD11223@redhat.com>
References: <cover.1363243596.git.hutao@cn.fujitsu.com>
	<5d85837fd58683b7e13ac78d6d468af6e152a512.1363243596.git.hutao@cn.fujitsu.com>
	<514194E4.3040208@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <514194E4.3040208@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v14 3/4] introduce pvevent device to deal
 with panicked event
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>, "Michael S. Tsirkin" <mst@redhat.com>, Hu Tao <hutao@cn.fujitsu.com>, qemu-devel <qemu-devel@nongnu.org>, Markus Armbruster <armbru@redhat.com>, Blue Swirl <blauwirbel@gmail.com>, Orit Wasserman <owasserm@redhat.com>, Juan Quintela <quintela@redhat.com>, Alexander Graf <agraf@suse.de>, Christian Borntraeger <borntraeger@de.ibm.com>, Jan Kiszka <jan.kiszka@siemens.com>, Andrew Jones <drjones@redhat.com>, Alex Williamson <alex.williamson@redhat.com>, Sasha Levin <levinsasha928@gmail.com>, Stefan Hajnoczi <stefanha@redhat.com>, Luiz Capitulino <lcapitulino@redhat.com>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, Kevin Wolf <kwolf@redhat.com>, Anthony Liguori <aliguori@us.ibm.com>, Marcelo Tosatti <mtosatti@redhat.com>

On Thu, Mar 14, 2013 at 10:14:12AM +0100, Paolo Bonzini wrote:
> Il 14/03/2013 09:15, Hu Tao ha scritto:
> > pvevent device is used to send guest panic event from guest to qemu.
> > 
> > When guest panic happens, pvevent device driver will write a event
> > number to IO port 0x505(which is the IO port occupied by pvevent device,
> > by default). On receiving the event, pvevent device will pause guest
> > cpu(s), and send a qmp event QEVENT_GUEST_PANICKED.  
> > 
> > TODO: make the IO port configurable
> 
> The port is already configurable as far as the device is concerned; when
> you add the port to the PC boards you will have to wind up fw-cfg.
> 
Why not add fw-cfg when device is created (with -device for instance)?

> So these patches can go in already, with the sole change that the HID
> must be in the QEMU namespace rather than MSFT.
> 
We should request one for QEMU.

--
			Gleb.