diff options
| author | Alexandre Ghiti <alexghiti@rivosinc.com> | 2024-02-29 15:10:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-17 15:36:26 +0300 |
| commit | 08a2117e83e5f78cd224be8485d90db1110e6517 (patch) | |
| tree | 6f2976ce4c1021e6e0b0365b9cc17e8065007397 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 56b274473d6e7e7375f2d0a2b4aca11d67c6b52f (diff) | |
| download | linux-08a2117e83e5f78cd224be8485d90db1110e6517.tar.xz | |
riscv: Fix text patching when IPI are used
[ Upstream commit c97bf629963e52b205ed5fbaf151e5bd342f9c63 ]
For now, we use stop_machine() to patch the text and when we use IPIs for
remote icache flushes (which is emitted in patch_text_nosync()), the system
hangs.
So instead, make sure every CPU executes the stop_machine() patching
function and emit a local icache flush there.
Co-developed-by: Björn Töpel <bjorn@rivosinc.com>
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20240229121056.203419-3-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Stable-dep-of: 13134cc94914 ("riscv: kprobes: Fix incorrect address calculation")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions