[PATCH v3 0/3] rseq: minor optimizations

[Eric Dumazet]

From: Eric Dumazet <edumazet@xxxxxxxxxx>

rseq is a heavy user of copy to/from user data in fast paths.
This series tries to reduce the cost.

v3: Third patch going back to v1 (only deal with 64bit arches)
v2: Addressed Peter and Mathieu feedbacks, thanks !

Eric Dumazet (3):
  rseq: optimize rseq_update_cpu_id()
  rseq: remove redundant access_ok()
  rseq: optimise rseq_get_rseq_cs() and clear_rseq_cs()

 kernel/rseq.c | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

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2.31.1.295.g9ea45b61b8-goog