On Mon, Jan 29, 2018 at 06:33:25PM -0500, Jerome Glisse wrote:
Between i would also like to participate, in my view the burden
be on GUP users, so if hardware is not ODP capable then you should at
least be able to kill the mapping/GUP and force the hardware to redo a
GUP if it get any more transaction on affect umem. Can non ODP hardware
do that ? Or is it out of the question ?
For RDMA we can have the HW forcibly tear down the MR, but it is
incredibly disruptive and nobody running applications would be happy
with this outcome.