On 05.05.20 10:46, Cornelia Huck wrote:
> On Tue, 5 May 2020 10:35:15 +0200
> Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote:
>
>> In LPAR we will only get an intercept for FC==3 for the PQAP
>> instruction. Running nested under z/VM can result in other intercepts as
>> well as ECA_APIE is an effective bit: If one hypervisor layer has
>> turned this bit off, the end result will be that we will get intercepts for
>> all function codes. Usually the first one will be a query like PQAP(QCI).
>> So the WARN_ON_ONCE is not right. Let us simply remove it.
>
> Thanks, that is helpful to describe.
>
> Fixes: e5282de93105 ("s390: ap: kvm: add PQAP interception for AQIC")
And maybe add a # v5.3+ to the stable-cc.
--
Thanks,
David / dhildenb
