On Fri, Jul 12, 2019 at 01:05:14PM +0000, Bernard Metzler wrote: > @@ -1131,6 +1131,10 @@ int siw_poll_cq(struct ib_cq *base_cq, int num_cqe, > struct ib_wc *wc) > * number of not reaped CQE's regardless of its notification > * type and current or new CQ notification settings. > * > + * This function gets called only by kernel consumers. > + * Notification state must immediately become visible to all > + * associated kernel producers (QP's).
No amount of memory barriers can achieve that goal.
