On Tue, Jan 11, 2022 at 11:01:42AM -0400, Jason Gunthorpe wrote:

Then we are we using get_user_phyr() at all if we are just storing it
in a sg?

I think we need to stop calling the output of the phyr dma map
helper a sg.  Yes, a { dma_addr, len } tuple is scatter/gather I/O in its
purest form, but it will need a different name in Linux as the scatterlist
will have to stay around for a long time before all that mess is cleaned
up.