From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:58449)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <pbonzini@redhat.com>) id 1XK5oQ-0001Hp-8k
	for qemu-devel@nongnu.org; Wed, 20 Aug 2014 09:20:31 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <pbonzini@redhat.com>) id 1XK5oK-0007fP-QS
	for qemu-devel@nongnu.org; Wed, 20 Aug 2014 09:20:26 -0400
Received: from mx1.redhat.com ([209.132.183.28]:1940)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <pbonzini@redhat.com>) id 1XK5oK-0007eY-IA
	for qemu-devel@nongnu.org; Wed, 20 Aug 2014 09:20:20 -0400
Message-ID: <53F4A082.7090103@redhat.com>
Date: Wed, 20 Aug 2014 15:20:02 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
MIME-Version: 1.0
References: <1408517593.25437.102.camel@ori.omang.mine.nu>
	<53F461E6.5020506@redhat.com>
	<1408527055.14053.107.camel@abi.no.oracle.com>
	<20140820113627.GG17371@redhat.com>
In-Reply-To: <20140820113627.GG17371@redhat.com>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] [PATCH 2/3] ioh3420: Provide a unique bus name and
 an interrupt mapping function
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: "Michael S. Tsirkin" <mst@redhat.com>, Knut Omang <knut.omang@oracle.com>
Cc: Juan Quintela <quintela@redhat.com>, Alexey Kardashevskiy <aik@ozlabs.ru>, Marcel Apfelbaum <marcel.a@redhat.com>, Markus Armbruster <armbru@redhat.com>, qemu-devel@nongnu.org, Gonglei <arei.gonglei@huawei.com>, Igor Mammedov <imammedo@redhat.com>

Il 20/08/2014 13:36, Michael S. Tsirkin ha scritto:
> 
> For pci bridges, unless you set bus_name, bus name will
> match device itself. See this code:
> 
>      * If we don't specify the name, the bus will be addressed as
>      * <id>.0, where id is the device id.
>      * Since PCI Bridge devices have a single bus each, we don't need
>      * the index:
>      * let users address the bus using the device name.
>      */
>     if (!br->bus_name && dev->qdev.id && *dev->qdev.id) {
>             br->bus_name = dev->qdev.id;
>     }

Is libvirt using this rule?  If not, I'd rather slash it since the
<id>.0 name is shared with all other buses and not PCI-bridge-specific.

Paolo