Re: [RFC] mpam,x86,fs/resctrl: Generic schema description Proof of Concept

[Drew Fustini <fustini@kernel.org>]

On Thu, Jun 04, 2026 at 02:47:39PM -0700, Reinette Chatre wrote:
> > The ability to change scope is much needed for RISC-V. There are
> > compromises in my RFC [1] as a result of trying to map everything to
> > either L2 or L3 scope.
> > 
> > I would also like to see a non-cpu cache scope for monitoring too, but
> > would that be better discussed outside the context of this proof of
> > concept?
> 
> I also think it would be good for it to be clear that monitoring is based on
> scope, not a resource. With the MB controls supporting different scope I do think
> that this would be a good next step. A previous musing from me on this topic can
> be found (at the end of ) https://lore.kernel.org/lkml/fb1e2686-237b-4536-acd6-15159abafcba@intel.com/
> 
> I have not yet considered how this can be built on top of this PoC though.

Thanks for explaining. I like how how you show an example of
mon_data/mon_NODE_00/mbm_total_bytes in that thread. I believe that sort
of scheme would work well for RISc-V as a bandwidth controller
implementing the CBQRI spec can be located anywhere within the system.

Drew