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

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Message-ID: <20090812134247.GA29340@redhat.com>
Date:	Wed, 12 Aug 2009 16:42:47 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Gregory Haskins <gregory.haskins@...il.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 Wed, Aug 12, 2009 at 03:40:44PM +0200, Arnd Bergmann wrote:
> On Wednesday 12 August 2009, Michael S. Tsirkin wrote:
> > > 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
> > >            
> > Heh, you don't need a bridge in this picture:
> > 
> > guest 1 - vhost - veth0 - veth1 - vhost guest 2
> 
> Sure, but the setup I described is the one that I would expect
> to see in practice because it gives you external connectivity.
> 
> Measuring two guests communicating over a veth pair is
> interesting for finding the bottlenecks, but of little
> practical relevance.
> 
> 	Arnd <><

Oh, hopefully macvlan will soon allow that.

-- 
MST
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