From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:34545)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <mst@redhat.com>) id 1b0Vv4-0001Ni-Cw
	for qemu-devel@nongnu.org; Wed, 11 May 2016 11:19:27 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <mst@redhat.com>) id 1b0Vuz-0001oU-77
	for qemu-devel@nongnu.org; Wed, 11 May 2016 11:19:25 -0400
Received: from mx1.redhat.com ([209.132.183.28]:49173)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <mst@redhat.com>) id 1b0Vuz-0001o9-1T
	for qemu-devel@nongnu.org; Wed, 11 May 2016 11:19:21 -0400
Received: from int-mx09.intmail.prod.int.phx2.redhat.com
	(int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by mx1.redhat.com (Postfix) with ESMTPS id 5DF983B703
	for <qemu-devel@nongnu.org>; Wed, 11 May 2016 15:19:20 +0000 (UTC)
Date: Wed, 11 May 2016 18:19:17 +0300
From: "Michael S. Tsirkin" <mst@redhat.com>
Message-ID: <20160511181545-mutt-send-email-mst@redhat.com>
References: <1462816056-17463-1-git-send-email-marcel@redhat.com>
	<8737pqfhac.fsf@dusky.pond.sub.org>
	<20160510183412-mutt-send-email-mst@redhat.com>
	<573216B9.3060902@redhat.com>
	<20160511165429-mutt-send-email-mst@redhat.com>
	<57334B44.6070709@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <57334B44.6070709@redhat.com>
Subject: Re: [Qemu-devel] [PATCH RFC 0/3] qdev: order devices by priority
 before creating them
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: Markus Armbruster <armbru@redhat.com>, Marcel Apfelbaum <marcel@redhat.com>, qemu-devel@nongnu.org

On Wed, May 11, 2016 at 05:09:56PM +0200, Paolo Bonzini wrote:
> 
> 
> On 11/05/2016 15:55, Michael S. Tsirkin wrote:
> > > Could they "know" it by adding an iommu=foo argument to e.g. the PCI
> > > bridge, pointing to the IOMMU device?
> > 
> > People don't create the pci host bridge though, it's
> > part of the default machine.
> 
> If there's just one of its class you can use -global (similar to how we
> use it for floppies).
> 
> Thanks,
> 
> Paolo

I don't like that there's no documentation for these
at all. How are users supposed to know which type to use
for -global?

-- 
MST