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| author |   Mathis Salmen <mathis.salmen@matsal.de> | 2023-04-06 12:11:31 +0200 |
|---|---|---|
| committer |   Palmer Dabbelt <palmer@rivosinc.com> | 2023-04-11 12:52:27 -0700 |
| commit | 8d736482749f6d350892ef83a7a11d43cd49981e (patch) | |
| tree | 8b4430f45e2dc1a2b4829f34555933d2145a27cd /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Merge patch series "RISC-V: Fixes for riscv_has_extension[un]likely()'s alternative dependency" (diff) | |
| download | wireguard-linux-8d736482749f6d350892ef83a7a11d43cd49981e.tar.xz wireguard-linux-8d736482749f6d350892ef83a7a11d43cd49981e.zip | |
riscv: add icache flush for nommu sigreturn trampoline
In a NOMMU kernel, sigreturn trampolines are generated on the user
stack by setup_rt_frame. Currently, these trampolines are not instruction
fenced, thus their visibility to ifetch is not guaranteed.
This patch adds a flush_icache_range in setup_rt_frame to fix this
problem.
Signed-off-by: Mathis Salmen <mathis.salmen@matsal.de>
Fixes: 6bd33e1ece52 ("riscv: add nommu support")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230406101130.82304-1-mathis.salmen@matsal.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions