Re: [dpdk-dev] [PATCH v2] vhost: enable reply-ack systematically

[Maxime Coquelin <maxime.coquelin@redhat.com>]

On 5/28/20 11:03 AM, Maxime Coquelin wrote:
> As announced during v20.05 release cycle, this
> patch makes reply-ack protocol feature to be enabled
> unconditionally.
> 
> This protocol feature makes the communication between the
> master and the slave more robust, avoiding for example
> possible undefined behaviour with VHOST_USER_SET_MEM_TABLE.
> 
> Also, reply-ack support will be required for upcoming
> VHOST_USER_SET_STATUS request.
> 
> Note that this protocol feature was disabled by default
> because Qemu version 2.7.0 to 2.9.0 had a bug causing a
> deadlock when reply-ack was negotiated and multiqueue
> enabled. These Qemu version are now very old and no more
> maintained, so we can resonnably consider we no more
> support them.
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---

Applied to dpdk-next-virtio/master

Thanks,
Maxime