netdev - Re: [Question]About KVM network zero-copy feature!

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Message-ID: <20120812093730.GD1421@redhat.com>
Date:	Sun, 12 Aug 2012 12:37:31 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Robert Vineyard <vineyard@...fmail.com>
Cc:	Stephen Hemminger <shemminger@...tta.com>,
	"Peter Huang(Peng)" <peter.huangpeng@...wei.com>,
	kvm@...r.kernel.org, netdev@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, avi@...hat.com,
	xiaohui.xin@...el.com
Subject: Re: [Question]About KVM network zero-copy  feature!

On Sat, Aug 11, 2012 at 08:42:44PM -0400, Robert Vineyard wrote:
> (adding Xin Xiaohui to the conversation for comment)
> 
> According to the NetworkingTodo page on the KVM wiki, zero-copy RX
> for macvtap is in fact on the roadmap, assigned to Xin:
> 
> http://www.linux-kvm.org/page/NetworkingTodo

AFAIK Xin left Intel and is not working on it.
Contributions are welcome.

> The Release Notes for RHEL 6.2 (originally published on 12/06/2011)
> also specifically mention macvtap/vhost zero-copy capabilities as
> being included as a Technology Preview:
> 
> http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.2_Release_Notes/virtualization.html
> 
> Since I've been unable to find much information on the current
> status of this development, can anyone confirm if this functionality
> is still in the works? If so, is there any planned ETA?
> 
> Thanks,
> Robert Vineyard

I think this means TX.

-- 
MST
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