> > The upper 8 bits of an ib_mr remote token are reserved for use as a > > rotating key, this allows a consumer to more safely reuse an ib_mr > > without having to overallocate large region pools. > > > > Tom. > > Right, my point was that one cannot encode INT_MAX different MR > identifiers into 32 - 8 = 24 bits. > > Best, > Bernard. The hardware exposes the number of MRs that exceeds UINT32_MAX. There is no software stack limit from hardware perspective. In this case, maybe it's a good idea to set it to 0xFFFFFF. I'm making the change. Thanks, Long
