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| author | Nicholas Piggin <npiggin@gmail.com> | 2023-10-18 18:34:23 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-10-20 14:40:20 +0300 |
| commit | ea142e590aec55ba40c5affb4d49e68c713c63dc (patch) | |
| tree | 44dc69807c481f9b566a48b2f03e711b48dc742d /arch/powerpc/kexec | |
| parent | f01b0edd562ef5a05bae31fe3a296721f89af7d9 (diff) | |
| download | linux-ea142e590aec55ba40c5affb4d49e68c713c63dc.tar.xz | |
powerpc/perf: Fix disabling BHRB and instruction sampling
When the PMU is disabled, MMCRA is not updated to disable BHRB and
instruction sampling. This can lead to those features remaining enabled,
which can slow down a real or emulated CPU.
Fixes: 1cade527f6e9 ("powerpc/perf: BHRB control to disable BHRB logic when not used")
Cc: stable@vger.kernel.org # v5.9+
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231018153423.298373-1-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kexec')
0 files changed, 0 insertions, 0 deletions