From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark McLoughlin <markmc@redhat.com>
Subject: Re: virtio net regression
Date: Mon, 20 Apr 2009 12:12:02 +0100
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Cc: Antoine Martin <antoine@nagafix.co.uk>,
	Antoine Martin <antoine@devloop.org.uk>,
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	Rusty Russell <rusty@rustcorp.com.au>
To: Avi Kivity <avi@redhat.com>
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On Sun, 2009-04-19 at 14:48 +0300, Avi Kivity wrote:
> Antoine Martin wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA512
> >
> > Wireshark was showing a huge amount of invalid packets (wrong checksum)
> > - - that was the cause of the slowdown.
> > Simply rebooting the host into 2.6.28.9 fixed *everything*, regardless
> > of whether the guests use virtio or ne2k_pci/etc.
> > The guests are still running 2.6.29.1, but I am not likely to try that
> > release again on the host anytime soon! Ouch!
> >   
> 
> 
> Strange, no significant tun changes between .28 and .29.

Sounds to me like it's this:

  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=2f181855a0

davem said he was queueing up for stable, but it's not in yet:

  http://kerneltrap.org/mailarchive/linux-netdev/2009/3/30/5337934

I'll check that it's in the queue.

Cheers,
Mark.