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

[Eric Auger]

Hi,
On 4/12/23 09:39, Marc Zyngier wrote:
> 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

Yes please let me know if it fixes your issue. I also tried bisection
but it did not lead to anything.

Thanks

Eric
>