Re: [PATCH v9 15/22] KVM: x86: Mark CR4.FRED as not reserved

[Xin Li]

>> I planned to send out these new kvm unit tests (not just FRED tests) after
>> KVM FRED patch series gets merged.
> 
> Definitely send them before.  Even if no one outside of Intel can run them (I
> forget when FRED hardware is coming), people like me can at least see what you're
> testing, which makes it more likely that we'll spot bugs.  E.g. in this case, the
> lack of negative tests for CR4.FRED is a big red flag.

No excuse, sadly mk_cr_64() completely escaped my notice.

And I didn’t even think about adding a CR4 test for FRED.

And as you expected, the happy path doesn’t expose it at all.