Re: [kvm-unit-tests] arm/arm64: psci_cpu_on_test failures with tcg

[Andrew Jones <andrew.jones@linux.dev>]

On Wed, Jun 07, 2023 at 08:49:36PM +0200, Andrew Jones wrote:
> On Wed, May 31, 2023 at 11:41:33AM +0100, Nikos Nikoleris wrote:
> > Hi,
> > 
> > I noticed that in the latest master the psci_cpu_on_test fails randomly for
> > both arm and arm64 with tcg.
> > 
> > If I do:
> > 
> > $> for i in `seq 1 100`; do ACCEL=tcg MAX_SMP=8 ./run_tests.sh psci; done |
> > grep FAIL
> > 
> > About 10 of the 100 runs fail for the arm and arm64 builds of the test. I
> > had a look and I am not sure I understand why. When I run the test with kvm,
> > I don't get any failures. Does anyone have an idea what could be causing
> > this?
> > 
> 
> I've also seen this failure on QEMU several times, but never investigated
> it. Now that the CI is running the tests under TCG the urgency of fixing
> it is higher, but we could also drop the psci test from the CI for now...

I just applied a patch[1] to drop the psci test from CI to arm/queue
because I was missing the nice green checkmark. We should certainly try
to figure out why it fails on tcg, though.

[1] https://gitlab.com/jones-drew/kvm-unit-tests/-/commit/bf4b759459e922b2e22c4281397a1857d4568186

Thanks,
drew