On Fri, Oct 30, 2020 at 12:41:12AM -0500, Bob Pearson wrote: > breaks rxe because it does use IB_USER_VERBS_CMD_POST_SEND. rxe > posts wqes to a work queue in shared memory and then calls > ibv_post_send with zero wqes as a doorbell to the kernel which uses > this as a hint to go read the shared memory. Gah, siw and rxe are open coding this stuff (wrongly!) in rdma-core This would be a lot better to use an eventfd Jason