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| author | Daisuke Matsuda <matsuda-daisuke@fujitsu.com> | 2024-12-20 19:09:34 +0900 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2025-02-21 13:07:43 -0400 |
| commit | d03fb5c6599e31b90c6b5f65d43d6ccc6b49eb91 (patch) | |
| tree | de8c9f67d499dae79f203976ff8e50424bc4ad59 /tools/perf/scripts/python/stackcollapse.py | |
| parent | b601792392f9fe8d9d1ae9028ca61d0f70ffb986 (diff) | |
RDMA/rxe: Allow registering MRs for On-Demand Paging
Allow userspace to register an ODP-enabled MR, in which case the flag
IB_ACCESS_ON_DEMAND is passed to rxe_reg_user_mr(). However, there is no
RDMA operation enabled right now. They will be supported later in the
subsequent two patches.
rxe_odp_do_pagefault() is called to initialize an ODP-enabled MR. It syncs
process address space from the CPU page table to the driver page table
(dma_list/pfn_list in umem_odp) when called with RXE_PAGEFAULT_SNAPSHOT
flag. Additionally, It can be used to trigger page fault when pages being
accessed are not present or do not have proper read/write permissions, and
possibly to prefetch pages in the future.
Link: https://patch.msgid.link/r/20241220100936.2193541-4-matsuda-daisuke@fujitsu.com
Signed-off-by: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions