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

[Reinette Chatre]

Hi Boris,

On 9/4/26 10:36 AM, Borislav Petkov wrote:
> On Thu, Sep 03, 2026 at 08:37:51PM -0700, Borislav Petkov wrote:
>> Lemme have a look.
> 
> Sashiko has comments:
> 
> https://sashiko.dev/#/patchset/20260709093111.367851-1-ben.horgan%40arm.com
> 
> Please address them: if valid, fix them, if not, explain why they don't need
> to be fixed.
Sashiko has two comments. I'll defer to Ben on the first comment.

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]. 

Reinette

[1] https://sashiko.dev/#/patchset/cover.1788452481.git.reinette.chatre%40intel.com