linux-kernel - Re: [PATCH V5 4/6 net-next] vhost: vhost TX zero-copy support

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Message-ID: <1305670889.10756.42.camel@localhost.localdomain>
Date:	Tue, 17 May 2011 15:21:29 -0700
From:	Shirley Ma <mashirle@...ibm.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	David Miller <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Avi Kivity <avi@...hat.com>, Arnd Bergmann <arnd@...db.de>,
	netdev@...r.kernel.org, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH V5 4/6 net-next] vhost: vhost TX zero-copy support

On Wed, 2011-05-18 at 00:28 +0300, Michael S. Tsirkin wrote:
> On Tue, May 17, 2011 at 01:50:19PM -0700, Shirley Ma wrote:
> > Resubmit the patch with most update. This patch passed some
> > live-migration test against RHEL6.2. I will run more stress test w/i
> > live migration.
> > 
> > Signed-off-by: Shirley Ma <xma@...ibm.com>
> 
> Cool. cleanup path needs a fix - are you use you can
> not use kobj or some other existing refcounting?
> 
> Is perf regressiion caused by tx ring overrun gone now?
> 
> I added some comments about how we might be aqble
> to complete requests out of order but it's not a must.

Oops, I used the old version vhost patch instead of most update one.

I will integrate your comments below and submit V6 patch instead.

thanks
Shirley

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