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

[Eric Auger]

Hi Mark,

On 4/12/23 10:48, Mark Rutland wrote:
> On Wed, Apr 12, 2023 at 10:00:40AM +0200, Eric Auger wrote:
>> 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.
> 
> FWIW, that worked for me; I replied there with a Tested-by (and test results).

Thank you for testing!

Eric
> 
> Thanks,
> Mark.
>