> I have got a report on failure to create FMR mapping 1K pages (that is > 4MB) on memfree. > > I don't have the exact details (ie if Arbel/Sinai / what FW / etc) > nor which exact check fails in > mthca_fmr_alloc, but what's clear is that the latter function returns > -ENOMEM when attr.max_pages is 1024 and it works fine when > attr.max_pages is 256. > > Is this failure clear to you? if yes, does a HW or FW limit is being > hit or its a driver design issue?
Is it really returning -ENOMEM? It seems much more likely that you are hitting the code /* For Arbel, all MTTs must fit in the same page. */ if (mthca_is_memfree(dev) && mr->attr.max_pages * sizeof *mr->mem.arbel.mtts > PAGE_SIZE) return -EINVAL; I guess you could call this limit a driver design issue. - R. _______________________________________________ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general