On Mon, Feb 27, 2017 at 12:02:07PM -0500, Josh Beavers wrote: > I just confirmed that reverting the C11 atomics commit (6b26a9e24739) > fixes ibv_rc_pingpong on my two at91 ARM boards. For some reason the > first few packets seem to send slowly, but once it gets going the rest > send quickly. How are you able to get it to compile? Without that commit ARM32 should blow up? > Jason, was it intentional that rmb() was removed with no replacement > in rxe_post_one_recv()? See > https://github.com/linux-rdma/rdma-core/commit/6b26a9e24739576ac3f4ae308485389a5b285497?diff=split#diff-f6b2d2321c2b3273e3453d055a62fa98 > for details. Yes, the rmb should have been a wmb and the atomic_thread_fence added to in advance_producer correctly replaces it. > Unfortunately, even after reverting the C11 atomics commit, I still > seem to observe "Couldn't post send" failures which kill the ping > occasionally. Is this a known issue? Sounds like this is unrelated to 6b26.. Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
