Re: [PATCH v2] vhost-user: fix enabling of queue pair

[Thomas Monjalon <thomas.monjalon@6wind.com>]

2015-11-24 09:43, Victor Kaplansky:
> Yuanhan, looks fine. Thanks for handling this.
> -- Victor
> 
> On Tue, Nov 24, 2015 at 03:25:35PM +0800, Yuanhan Liu wrote:
> > From: Victor Kaplansky <victork@redhat.com>
> > 
> > The VHOST_USER_SET_VRING_ENABLE request was sent for each queue-pair.
> > However, it's changed to be sent per queue in the queue-pair by QEMU
> > commit dc3db6ad ("vhost-user: start/stop all rings"). The change
> > is reasonable, as we send all other request per queue, instead of
> > queue-pair.
> > 
> > Hence we should do proper changes to adapt to the QEMU change here.
> > Otherwise, a segfault will be triggered when last TX queue was enabled.
> > 
> > [ commit log reword --  Yuanhan Liu ]
> > 
> > Signed-off-by: Victor Kaplansky <victork@redhat.com>
> > Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
> > ---
> > 
> > v2: invoke vring_state_changed() callback per-vring as well
> > 
> > This fixes a fatal issue, without that MQ will not work properly.
> > Seems that Victor is busy at something else (or out of office so
> > far), hence I sent v2 on behalf of him.

Applied, thanks