Roland Dreier wrote:
> RDS and NFSRDMA will use the local_dma_lkey if the device supports it.
> If not, it will use a dma_mr with local access rights. So using the
> local_dma_lkey is just an optimization to avoid allocating a
> local-access-only dma_mr.
I wonder if it's worth it... the alternative would be for cxgb3 etc. to
just return STag 0 from get_dma_mr if only local access rights are
requested. But of course as we discussed later STag 0 doesn't do PD
protection, if anyone cared.
I assumed that since the PD protection couldn't be enforced, that cxgb3
shouldn't take this approach. But yea, if we ignore the pd issue, cxgb3
could hide this in a dma-mr, for local access only.
Stevo.
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