UPD: Seems it won't work because ibv_reg_mr() takes a permissions argument
and doesn't allow more permissions than allowed by the kernel for memory
mappings. So the only way to register all memory is probably to iterate
over /proc/PID/maps... :)
Mellanox docs mention that older MLNX_OFED emulated ODP, so maybe it's
still possible to use it, but it's not confirmed.
Vitaliy Filippov
043ed854f3