Firstly, very sorry for so late review!
On Fri, Aug 25, 2017 at 09:40:50AM +0000, Jianfeng Tan wrote:
> To support kick in secondary process, we propose callfd_pri and
> kickfd_pri to store the value in primary process; and by a new
> API, rte_vhost_set_vring_effective_fd(), we can set effective
> callfd and kickfd which can be used by secondary process.
>
> Note in this case, either primary process or the secondary process
> can kick the frontend; that is, they cannot kick a vring at the
> same time.
Since only one can work, why not just overwriting the fd? Say, you
could introudce some APIs like "rte_vhost_set_vring_callfd", then
you don't need to introduce few more fields like "callfd_pri".
--yliu
