RE: [PATCH 1/2] x86/resctrl, Documentation: Keep mbm_assign_mode "default" on boot

[Luck, Tony]

> > > So, long story short - and I appreciate the explaining - we should switch
> > > AMD's default behavior back to RMID + 64 counters - exactly like it is on
> > > Intel - and the ABMC thing will be explicitly selectable by the user.
> >
> > nit: s/exactly like it is on Intel//
>
> What does that mean?
>
> What's the difference between Intel's RMID mode + 64 counters and AMD's?

Intel systems have counters backing up every RMID. So CPUD leaf 0xF tells Linux how many can be used.

AMD says there is some large number of RMIDs but doesn't enumerate that only 64 of them work concurrently.

So, AMD is not "exactly like" Intel.

-Tony