From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1NI2zL-00011f-EA
	for qemu-devel@nongnu.org; Tue, 08 Dec 2009 11:32:35 -0500
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1NI2zF-0000st-OT
	for qemu-devel@nongnu.org; Tue, 08 Dec 2009 11:32:34 -0500
Received: from [199.232.76.173] (port=45853 helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1NI2zF-0000sd-Hq
	for qemu-devel@nongnu.org; Tue, 08 Dec 2009 11:32:29 -0500
Received: from mx1.redhat.com ([209.132.183.28]:52881)
	by monty-python.gnu.org with esmtp (Exim 4.60)
	(envelope-from <berrange@redhat.com>) id 1NI2zF-0004XF-33
	for qemu-devel@nongnu.org; Tue, 08 Dec 2009 11:32:29 -0500
Received: from int-mx05.intmail.prod.int.phx2.redhat.com
	(int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.18])
	by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id nB8GWPc6017596
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK)
	for <qemu-devel@nongnu.org>; Tue, 8 Dec 2009 11:32:26 -0500
Date: Tue, 8 Dec 2009 16:32:23 +0000
From: "Daniel P. Berrange" <berrange@redhat.com>
Subject: Re: [Qemu-devel] Re: [FOR 0.12 PATCH v3 10/21] default devices: add
	global cmd line option.
Message-ID: <20091208163223.GK16596@redhat.com>
References: <1236361906.1375741260288537008.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com>
	<1862782368.1376061260288689974.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1862782368.1376061260288689974.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com>
Reply-To: "Daniel P. Berrange" <berrange@redhat.com>
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: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>, qemu-devel@nongnu.org

On Tue, Dec 08, 2009 at 11:11:29AM -0500, Paolo Bonzini wrote:
> > > > Add global command line option to disable default devices.
> > >
> > > Should -readconfig imply this?
> > 
> > Hmm, not sure.  Why do you think this would be useful?
> 
> Here is my thinking: if you used -writeconfig, your machine description
> is (at least in theory) entirely included in the config file including
> (again in theory) the default devices.  So, if the machine description
> has no parallel port, QEMU should not create a default one when you load
> it with -readconfig.

Shouldn't  -writeconfig just  add '-nodefaults' to the config it
generates ?

That way if someone instead creates a configfile by hand, copying in
their existing QEMU args they still get default devices which matches 
behaviour of their existing CLI args.

Regards,
Daniel
-- 
|: Red Hat, Engineering, London   -o-   http://people.redhat.com/berrange/ :|
|: http://libvirt.org  -o-  http://virt-manager.org  -o-  http://ovirt.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505  -o-  F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|