> On Jun 27, 2017, at 3:37 AM, Sagi Grimberg <sagi@xxxxxxxxxxx> wrote: > > Jason, > >>> The issue about the HCA not being able to access the inline >>> buffer during a retransmit is also not an issue for RPC- >>> over-RDMA because these buffers are always registered with >>> the local rdma lkey. >> Exactly. > > Lost track of the thread... > > > Indeed you raised this issue lots of times before, and I failed to see > why its important or why its error prone, but now I do... > > My apologies for not listening :( > > We should fix _all_ initiators for it, nvme-rdma, iser, srp > and xprtrdma (and probably some more ULPs out there)... Go back and browse the end of the thread: there's no need to change xprtrdma, and maybe no need to change the others either. > It also means that we cannot really suppress any send completions as > that would result in an unpredictable latency (which is not acceptable). > > I wish we could somehow tell the HCA that it can ignore access fail to a > specific address when retransmitting.. but maybe its too much to ask... -- Chuck Lever -- 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
