netdev - Re: [PATCHv2 0/2] vhost: a kernel-level virtio server

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Date:	Wed, 12 Aug 2009 14:52:01 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Gregory Haskins <gregory.haskins@...il.com>
Cc:	"Michael S. Tsirkin" <mst@...hat.com>, netdev@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, mingo@...e.hu, linux-mm@...ck.org,
	"Andrew Morton" <akpm@...ux-foundation.org>, hpa@...or.com,
	Patrick Mullaney <pmullaney@...ell.com>
Subject: Re: [PATCHv2 0/2] vhost: a kernel-level virtio server

On Wednesday 12 August 2009, Gregory Haskins wrote:
> >> Are you saying SRIOV is a requirement, and I can either program the
> >> SRIOV adapter with a mac or use promis?  Or are you saying I can use
> >> SRIOV+programmed mac OR a regular nic + promisc (with a perf penalty).
> > 
> > SRIOV is not a requirement. And you can also use a dedicated
> > nic+programmed mac if you are so inclined.
> 
> Makes sense.  Got it.
> 
> I was going to add guest-to-guest to the test matrix, but I assume that
> is not supported with vhost unless you have something like a VEPA
> enabled bridge?
> 

If I understand it correctly, you can at least connect a veth pair
to a bridge, right? Something like

           veth0 - veth1 - vhost - guest 1 
eth0 - br0-|
           veth2 - veth3 - vhost - guest 2
          
It's a bit more complicated than it need to be, but should work fine.

	Arnd <><
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