[PATCH 1/3] KVM: PPC: Book3S HV: Always save guest pmu for guest capable of nesting

[Michael Ellerman]

Suraj Jitindar Singh <sjitindarsingh at gmail.com> writes:
> On Sat, 2019-07-13 at 13:47 +1000, Michael Ellerman wrote:
>> Suraj Jitindar Singh <sjitindarsingh at gmail.com> writes:
...
>> > 
>> > Fixes: 95a6432ce903 "KVM: PPC: Book3S HV: Streamlined guest
>> > entry/exit path on P9 for radix guests"
>> 
>> I'm not clear why this and the next commit are marked as fixing the
>> above commit. Wasn't it broken prior to that commit as well?
>
> That was the commit which introduced the entry path which we use for a
> nested guest, the path on which we need to be saving and restoring the
> pmu registers and so where the new code was introduced.

OK, I thought that commit was an unrelated optimisation. Agree that is a
good target if it is the commit that introduced the nested path.

cheers