Re: [PATCH V4 0/1] powerpc/perf: Clear pending PMI in ppmu callbacks

On Wed, 21 Jul 2021 01:48:28 -0400, Athira Rajeev wrote:

Running perf fuzzer testsuite popped up below messages
in the dmesg logs:

"Can't find PMC that caused IRQ"

This means a PMU exception happened, but none of the PMC's (Performance
Monitor Counter) were found to be overflown. Perf interrupt handler checks
the PMC's to see which PMC has overflown and if none of the PMCs are
overflown ( counter value not >= 0x80000000 ), it throws warning:
"Can't find PMC that caused IRQ".

[...]

Applied to powerpc/next.

[1/1] powerpc/perf: Fix PMU callbacks to clear pending PMI before resetting an overflown PMC
      https://git.kernel.org/powerpc/c/2c9ac51b850d84ee496b0a5d832ce66d411ae552

cheers