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

On Sat, Aug 01, 2026 at 04:47:01PM -0700, Reinette Chatre wrote:
> ...
> On Intel the RMIDs are always counting. Please keep in mind that these RMID do not
> actually return raw counts that are verbatim passed on to user space but instead
> the returned value is "upscaled" using a hardware provided scaling factor to obtain the
> value that is returned to user space. This is done on AMD (with and without ABMC)
> and Intel.

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.

This way there are no surprises when running any tools on either vendor and if
one wants something special, one selects it.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette