netdev - Re: [PATCH v3 3/6] vbus: add a "vbus-proxy" bus model for vbus

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Date:	Mon, 17 Aug 2009 17:14:49 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Gregory Haskins <gregory.haskins@...il.com>
Cc:	Avi Kivity <avi@...hat.com>, Gregory Haskins <ghaskins@...ell.com>,
	kvm@...r.kernel.org, alacrityvm-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH v3 3/6] vbus: add a "vbus-proxy" bus model for
	vbus_driver objects


* Gregory Haskins <gregory.haskins@...il.com> wrote:

> Avi Kivity wrote:
> > On 08/17/2009 05:16 PM, Gregory Haskins wrote:
> >>> My opinion is that this is a duplication of effort and we'd be better
> >>> off if everyone contributed to enhancing virtio, which already has
> >>> widely deployed guest drivers and non-Linux guest support.
> >>>
> >>> It may have merit if it is proven that it is technically superior to
> >>> virtio (and I don't mean some benchmark in some point in time; I mean
> >>> design wise).  So far I haven't seen any indications that it is.
> >>>
> >>>      
> >>
> >> The design is very different, so hopefully I can start to convince you
> >> why it might be interesting.
> >>    
> > 
> > We've been through this before I believe.  If you can point out 
> > specific differences that make venet outperform virtio-net I'll 
> > be glad to hear (and steal) them though.
> 
> You sure know how to convince someone to collaborate with you, eh?
> 
> Unforunately, i've answered that question numerous times, but it 
> apparently falls on deaf ears.

I'm trying to find the relevant discussion. The link you gave in the 
previous mail:

  http://lkml.org/lkml/2009/4/21/408

does not offer any design analysis of vbus versus virtio, and why 
the only fix to virtio is vbus. It offers a comparison and a blanket 
statement that vbus is superior but no arguments.

(If you've already explained in a past thread then please give me an 
URL to that reply if possible, or forward me that prior reply. 
Thanks!)

	Ingo
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