Re: [Qemu-devel] [PATCH v3 0/2] vhost-user: Extend protocol to receive replies on any command.

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, Jul 25, 2016 at 02:27:18PM +0400, Marc-André Lureau wrote:
> Hi
> 
> On Mon, Jul 25, 2016 at 10:41 AM, Prerna <saxenap.ltc@gmail.com> wrote:
> >
> >
> > On Thu, Jul 7, 2016 at 12:04 PM, Prerna Saxena <saxenap.ltc@gmail.com>
> > wrote:
> >>
> >> From: Prerna Saxena <prerna.saxena@nutanix.com>
> >>
> >> The current vhost-user protocol requires the client to send responses to
> >> only a
> >> few commands. For the remaining commands, it is impossible for QEMU to
> >> know the
> >> status of the requested operation -- ie, did it succeed? If so, by what
> >> time?
> >>
> >> This is inconvenient, and can also lead to races. As an example:
> >>  [..snip..]
> >>
> >> References:
> >> v1 : https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg07152.html
> >> v2 : https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg00048.html
> >>
> >>
> >> Prerna Saxena (2):
> >>   vhost-user: Introduce a new protocol feature REPLY_ACK.
> >>   vhost-user: Attempt to fix a race with set_mem_table.
> >>
> >>  docs/specs/vhost-user.txt |  44 +++++++++++++++
> >>  hw/virtio/vhost-user.c    | 133
> >> ++++++++++++++++++++++++++++++----------------
> >>  2 files changed, 130 insertions(+), 47 deletions(-)
> >>
> >
> > Ping !
> > Michael, MarcAndre, Did you have a chance to look at this patch series?
> >
> 
> That's not going to make it in 2.7 I am afraid.

It's a bugfix so - depends on how quickly can comments be addressed.

-- 
MST