On 18.10.2021 13:45, Roger Pau Monné wrote:
> On Fri, May 07, 2021 at 10:40:34AM +0200, Jan Beulich wrote:
>> This is a partial revert of 540d911c2813 ("x86/CPUID: shrink
>> max_{,sub}leaf fields according to actual leaf contents"). Andrew points
>> out that XXX.
>>
>> Reported-by: Andrew Cooper <[email protected]>
>> Signed-off-by: Jan Beulich <[email protected]>
>> ---
>> Obviously the XXX wants filling in. So far I did not really understand
>> what bad consequences there might be, but I can agree with the undoing
>> of this part of the original change along the lines of why the Viridian
>> side adjustment was also requested to be dropped (before the patch went
>> in).
>
> I have to admit I'm confused about this. Here the maximum leaf
> reported only changes between PV and HVM, but never as a result of the
> features exposed, which I think should be fine?
>
> Ie: I recall the problem being the maximum leaf possibly shrinking
> when migrating, but that's not the case.
I assume that's a question to Andrew? Because if I knew the answer,
I could probably have written a proper / complete description.
Jan
