> We up the minimum page size for the FMR pool, as it is rare that the
> kernel would send down a requests with scattered 512 byte fragments, and
> no HCA supports such a small FMR mapping in any case.
I believe you are wrong here as connectx support fmr-ing 512 byte
segments ("block lists") since firmware 2.6 or so
> # ibv_devinfo -v | grep -E "(page_size_cap|fw_ver)"
> fw_ver: 2.7.000
> page_size_cap: 0xfffffe00
Or.
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