pmu-chain-promotion kvm-unit-test failures in mainline

[Marc Zyngier]

On Tue, 11 Apr 2023 22:15:02 +0100,
Mark Brown <broonie at kernel.org> wrote:
> 
> [1  <text/plain; us-ascii (7bit)>]
> Arm's internal test infrastructure has started seeing failures for the
> pmu-chain-promption test in kvm-unit-tests on TX2 when running mainline
> and kvm-unit-tests commit 2480430a36102f8ea276b3bfb1d64d5dacc23b8f
> ("configure: Show the option in case it is not known").  The log I'm
> seeing from the test runner is:
> 
> TESTNAME=pmu-chain-promotion TIMEOUT=90s ACCEL= ./arm/run arm/pmu.flat -smp 1 -append 'pmu-chain-promotion'
> FAIL pmu-chain-promotion (7 tests, 2 unexpected failures)
> 
> Unfortunately I don't have direct access to a TX2 so can't readily
> alter the test run other than replacing the kernel.  I believe the
> specific failures were:
> 
> FAIL: pmu: pmu-chain-promotion: 32-bit overflows: CHAIN counter enabled: CHAIN counter was incremented and overflow
> FAIL: pmu: pmu-chain-promotion: 32-bit overflows: CHAIN counter enabled: 32b->64b CHAIN counter was incremented and overflow

Is this related to [1]?

	M.

[1] https://lore.kernel.org/r/20230315110725.1215523-1-eric.auger@redhat.com

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