From: Arnd Bergmann <arndbergmann@googlemail.com>
Subject: Re: [Qemu-devel] Release plan for 0.12.0
Date: Wed, 14 Oct 2009 15:09:28 +0200
References: <4AC29E4D.80707@us.ibm.com>
	<200910081555.40897.jens@linux.vnet.ibm.com>
	<4ACDF550.1020502@codemonkey.ws>
In-Reply-To: <4ACDF550.1020502@codemonkey.ws>
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To: qemu-devel@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>, kvm-devel <kvm@vger.kernel.org>, Or Gerlitz <ogerlitz@voltaire.com>, Paul Brook <paul@codesourcery.com>, Jens Osterkamp <jens@linux.vnet.ibm.com>

On Thursday 08 October 2009, Anthony Liguori wrote:
> Jens Osterkamp wrote:
> > On Wednesday 30 September 2009, Anthony Liguori wrote:
> >
> >> Please add to this list and I'll collect it all and post it somewhere.
> >>     
> >
> > What about Or Gerlitz' raw backend driver ? I did not see it go in yet, or did 
> > I miss something ?
> >   
> 
> The patch seems to have not been updated after the initial posting and 
> the first feedback cycle.
> 
> I'm generally inclined to oppose the functionality as I don't think it 
> offers any advantages over the existing backends.

There are two reasons why I think this backend is important:

- As an easy way to provide isolation between guests (private ethernet
  port aggregator, PEPA) and external enforcement of network priviledges
  (virtual ethernet port aggregator, VEPA) using the macvlan subsystem.

- As a counterpart to the vhost_net driver, providing an identical
  user interface with or without vhost_net acceleration in the kernel.

	Arnd <><