Re: [PATCH v4 7/9] IB/core: generic RDMA READ/WRITE API

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Hi Bart,

I see the use case for enabling MRs for debugging, but I still don't
think the ULP is the right place.  I also don't see where you
cna do this currently: for srpt, the only driver converted in this
series there is no support for registrations at all currently,
and with the the series you can force it to register with a one
line code change in rdma_rw_use_mr.  For iSERt, which I plan to
convert for 4.7 (and which has some WIP code in git) MR support
exists, but is only enabled if the device supports the vendor
specific signature handover extension (aka if running on mlx5 hardware).
With the future conversion you'll still have a simply compile time
switch to always enabled it, and I'd be fine with adding a module
parameter to force it as well.
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