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Date: Wed, 17 Jul 2013 10:05:23 +0800
From: Stefan Hajnoczi <stefanha@gmail.com>
Message-ID: <20130717020523.GB26311@stefanha-thinkpad.redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] dataplane: sync virtio.c and vring.c
 virtqueue state
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To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>, Ping Fan Liu <pingfank@linux.vnet.ibm.com>, qemu-devel@nongnu.org

On Mon, Jul 01, 2013 at 01:29:17PM +0200, Stefan Hajnoczi wrote:
> Load the virtio.c state into vring.c when we start dataplane mode and
> vice versa when stopping dataplane mode.  This patch makes it possible
> to start and stop dataplane any time while the guest is running.
> 
> This will eventually allow us to go back to QEMU main loop for
> bdrv_drain_all() and live migration.  In the meantime, this patch makes
> the dataplane lifecycle more robust but should make no visible
> difference.  It may be useful in the virtio-net dataplane effort.
> 
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
>  hw/block/dataplane/virtio-blk.c     | 2 +-
>  hw/virtio/dataplane/vring.c         | 8 +++++---
>  include/hw/virtio/dataplane/vring.h | 2 +-
>  3 files changed, 7 insertions(+), 5 deletions(-)

Applied to my block tree:
https://github.com/stefanha/qemu/commits/block

Stefan