From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1N65C6-0000cz-6U for qemu-devel@nongnu.org; Thu, 05 Nov 2009 11:28:18 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1N65C1-0000Xb-AS for qemu-devel@nongnu.org; Thu, 05 Nov 2009 11:28:17 -0500 Received: from [199.232.76.173] (port=43061 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1N65C0-0000Wj-PY for qemu-devel@nongnu.org; Thu, 05 Nov 2009 11:28:13 -0500 Received: from e8.ny.us.ibm.com ([32.97.182.138]:38321) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1N65C0-00009d-DJ for qemu-devel@nongnu.org; Thu, 05 Nov 2009 11:28:12 -0500 Received: from d01relay01.pok.ibm.com (d01relay01.pok.ibm.com [9.56.227.233]) by e8.ny.us.ibm.com (8.14.3/8.13.1) with ESMTP id nA5COVZi001752 for ; Thu, 5 Nov 2009 07:24:31 -0500 Received: from d03av01.boulder.ibm.com (d03av01.boulder.ibm.com [9.17.195.167]) by d01relay01.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id nA5GSA1a098574 for ; Thu, 5 Nov 2009 11:28:11 -0500 Received: from d03av01.boulder.ibm.com (loopback [127.0.0.1]) by d03av01.boulder.ibm.com (8.14.3/8.13.1/NCO v10.0 AVout) with ESMTP id nA5GS14X004111 for ; Thu, 5 Nov 2009 09:28:01 -0700 Message-ID: <4AF2FD10.7050607@us.ibm.com> Date: Thu, 05 Nov 2009 10:28:00 -0600 From: Anthony Liguori MIME-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu References: <1257294485-27015-1-git-send-email-aliguori@us.ibm.com> <4AF2E247.3090409@redhat.com> <4AF2E7CE.8010506@us.ibm.com> <20091105151154.GF689@redhat.com> <4AF2EBBB.7070605@redhat.com> <4AF2F674.6080205@us.ibm.com> <4AF2FB52.2090305@redhat.com> In-Reply-To: <4AF2FB52.2090305@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Avi Kivity Cc: Mark McLoughlin , Arnd Bergmann , Juan Quintela , Dustin Kirkland , qemu-devel@nongnu.org, Michael Tsirkin Avi Kivity wrote: > On 11/05/2009 05:59 PM, Anthony Liguori wrote: >> Avi Kivity wrote: >>> On 11/05/2009 05:11 PM, Daniel P. Berrange wrote: >>>> The main problem is that we've never really used the 'session' >>>> instances, >>>> since networking configs are rather limited to pretty much just SLIRP >>>> and people expect full bridging. I think this patch series you've >>>> done is invaluable and will let us finally make full use of the >>>> libvirt >>>> 'session' instances for desktop virt, running everything unprivileged. >>>> >>> >>> What's to stop you from using the same idea to get a tap fd for the >>> unprivileged libvirtd instance? >> >> Why limit this to just libvirt based management tools? The helper >> has to live somewhere, why not have it live in qemu? >> > > Because anything special the management tools wants done (as simple as > remembering the interface name so it can collect statistics and > associate them with the guest) will render the helper unusable. The > helper is pure glue so it will be very hard to generalize. It can get the interface names via info network. But let's make this more concrete, what features cannot be implemented? -- Regards, Anthony Liguori