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

[Borislav Petkov]

On Thu, Jul 30, 2026 at 08:40:29PM +0000, Luck, Tony wrote:
> > In either case, creating more monitoring groups than available counters can
> > lead to innacuracies during measurement.
> 
> Is that magic "64" enumerated anywhere? Or are users expected to just know it somehow (or find out
> the hard way when they get odd results when using more than 64 RMIDs).

How is this done on Intel?

How does the resctrl code handle counter exhaustion?

Do tools get some -E<error> thing in that last command status?

-- 
Regards/Gruss,
    Boris.

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