[kvm-unit-tests PATCH 14/32] powerpc: general interrupt tests

[Thomas Huth]

On 01/03/2024 14.45, Andrew Jones wrote:
> On Fri, Mar 01, 2024 at 01:41:22PM +0100, Thomas Huth wrote:
>> On 26/02/2024 11.12, Nicholas Piggin wrote:
>>> Add basic testing of various kinds of interrupts, machine check,
>>> page fault, illegal, decrementer, trace, syscall, etc.
>>>
>>> This has a known failure on QEMU TCG pseries machines where MSR[ME]
>>> can be incorrectly set to 0.
>>
>> Two questions out of curiosity:
>>
>> Any chance that this could be fixed easily in QEMU?
>>
>> Or is there a way to detect TCG from within the test? (for example, we have
>> a host_is_tcg() function for s390x so we can e.g. use report_xfail() for
>> tests that are known to fail on TCG there)
> 
> If there's nothing better, then it should be possible to check the
> QEMU_ACCEL environment variable which will be there with the default
> environ.

Well, but that's only available from the host side, not within the test 
(i.e. the guest). So that does not help much with report_xfail...
I was rather thinking of something like checking the device tree, e.g. for 
the compatible property in /hypervisor to see whether it's KVM or TCG...?

  Thomas