[openib-general] Reserved L_Key API
roland at topspin.com
Wed Sep 15 08:42:53 PDT 2004
Roland> I don't think consumers ever really want to pass remote
Roland> entities an R_Key with translation off (which would allow
Roland> RDMA to arbitrary addreses). I think the solution for
Roland> creating R_Keys is FMRs (either Tavor-style or verbs
Fabian> Are the ramifications of such an RKEY any worse than those
Fabian> of locally attached DMA-capable adapters? If your FC HBA
Fabian> goes haywire and decides to write all over memory, there's
Fabian> not much you can do. SRP just uses IB as a bus extension
Fabian> of sorts.
All I can say is that in the real world people don't like it. That's
why features like remote invalidate get added.
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