On 10/21/2022 6:55 PM, Long Li wrote:
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.
Actually, 2^24 MRs is enormous in itself. Does this driver
actually support that many? Without falling over?
Tom.
