When you deregister a FMR, what information from that FMR can the HCA cache - just the MTTs or also the MPTs? Can an incoming RDMA transfer access the pages previously referenced by that FMR? If so, for how long? When is it safe to unpin the pages?
What about when you modify the FMR? How long are previous mappings "at risk" of transfers? I'm kinda confused because the Mellanox docs indicate that the HCA can cache stuff and that the pages can't be unpinned until the cache is flushed. If that's true, I don't see how FMRs can be used because they could be suspect to malicious use by a remote host. Help? - Fab _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
