Re: [PATCH v5 0/3] x86,fs/resctrl,arm_mpam: Factor MBA parse-time conversion to be per-arch

On Fri, Sep 04, 2026 at 02:15:08PM -0700, Reinette Chatre wrote:

Sashiko's second comment is about resctrl's existing (not introduced by this patch)
Intel specific enumeration being resilient against a hypervisor misconfiguration.
Thus far resctrl assumed the enumeration would return what the actual hardware
is known to support.

Sashiko had similar "hypervisor misconfiguration" comments in response to another
resctrl series that already falls under the "cleanup" umbrella. It is not clear to
me how far resctrl needs to go to be resilient against hypervisor misconfiguration
but I can include needed validation addressing this report as part of [1]. 

I would always ask myself how realistic is the use case. Here, I'm thinking
not that realistic unless you guys wanna support resctrl in a guest. Which
would be weird, IMHO, because a guest can fake all kinds of hw so controlling
resources of a fake hw is an exercise in futility.

So might as well answer that Sashiko review comment with "thanks, but no
thanks."

:-)

-- 
Regards/Gruss,
    Boris.

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