Re: [kvm-unit-tests PATCH v1 3/3] s390x: add pgm spec interrupt loop test

Thomas Huth
2022-06-30T17:11:20Z

On 30/06/2022 16.38, Janis Schoetterl-Glausch wrote:
> On 6/30/22 13:30, Nico Boehr wrote:
>> An invalid PSW causes a program interrupt. When an invalid PSW is
>> introduced in the pgm_new_psw, an interrupt loop occurs as soon as a
>> program interrupt is caused.
>>
>> QEMU should detect that and panick the guest, hence add a test for it.
>
> Why is that, after all in LPAR it would just spin, right?

Not sure what the LPAR is doing, but the guest is certainly completely
unusable, so a panic event is the right thing to do here for QEMU.

> Also, panicK.
> How do you assert that the guest doesn't spin forever, is there a timeout?

I agree, it would be good to have a "timeout" set in the unittests.cfg for
this test here (some few seconds should be enough).

Thomas