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Date: Mon, 22 Feb 2016 15:08:24 +0800
From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
To: Thomas Monjalon <thomas.monjalon@6wind.com>
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Cc: dev@dpdk.org, Victor Kaplansky <vkaplans@redhat.com>,
 "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [dpdk-dev] [PATCH v3 0/8] vhost-user live migration support
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On Fri, Feb 19, 2016 at 04:01:25PM +0100, Thomas Monjalon wrote:
> 2016-01-29 12:57, Yuanhan Liu:
> > This patch set adds the vhost-user live migration support.
> > 
> > The major task behind that is to log pages we touched during
> > live migration, including used vring and desc buffer. So, this
> > patch set is basically about adding vhost log support, and
> > using it.
> > 
> > Another important thing is that you need notify the switches
> > about the VM location change after migration is done. GUEST_ANNOUNCE
> > feature is for that, which sends an GARP message after migration.
> > For older kernel (<= v3.4) without GUEST_ANNOUNCE support,
> > we construct and broadcast a RARP message, with the mac address
> > from VHOST_USER_SEND_RARP payload.
> > 
> > Patchset
> > ========
> > - Patch 1 handles VHOST_USER_SET_LOG_BASE, which tells us where
> >   the dirty memory bitmap is.
> >     
> > - Patch 2 introduces a vhost_log_write() helper function to log
> >   pages we are gonna change.
> > 
> > - Patch 3 logs changes we made to used vring.
> > 
> > - Patch 4 logs changes we made to vring desc buffer.
> > 
> > - Patch 5 and 7 add some feature bits related to live migration.
> > 
> > - patch 6 does the RARP construction and broadcast job.
> 
> Patches 2 and 3 have been merged to avoid a compilation error.
> Applied, thanks

Actually, there was a ongoing discussion about patch 6, the handling
of VHOST_USER_SEND_RARP request:

  http://dpdk.org/ml/archives/dev/2016-February/033539.html

Maybe you have seen that and I didn't make it clear; my bad. Since you
have already applied it. I will make a standalone patch, and try to
send it out today.

	--yliu