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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-18 19:10:49 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-18 19:10:49 +0100 |
| commit | 0c2822b116e300ca6e3b7f98623deb760a93a1d2 (patch) | |
| tree | aa767bb4071c6d59c1b53912ee06a2fd2250f560 /Documentation/admin-guide/hw-vuln/cross-thread-rsb.rst | |
| parent | Merge tag 'block-6.2-2023-02-17' of git://git.kernel.dk/linux (diff) | |
| parent | arm64: perf: reject CHAIN events at creation time (diff) | |
| download | linux-0c2822b116e300ca6e3b7f98623deb760a93a1d2.tar.xz linux-0c2822b116e300ca6e3b7f98623deb760a93a1d2.zip | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 regression fix from Will Deacon:
"Apologies for the _extremely_ late pull request here, but we had a
'perf' (i.e. CPU PMU) regression on the Apple M1 reported on Wednesday
[1] which was introduced by bd2756811766 ("perf: Rewrite core context
handling") during the merge window.
Mark and I looked into this and noticed an additional problem caused
by the same patch, where the 'CHAIN' event (used to combine two
adjacent 32-bit counters into a single 64-bit counter) was not being
filtered correctly. Mark posted a series on Thursday [2] which
addresses both of these regressions and I queued it the same day.
The changes are small, self-contained and have been confirmed to fix
the original regression.
Summary:
- Fix 'perf' regression for non-standard CPU PMU hardware (i.e. Apple
M1)"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: perf: reject CHAIN events at creation time
arm_pmu: fix event CPU filtering
Diffstat (limited to 'Documentation/admin-guide/hw-vuln/cross-thread-rsb.rst')
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