Re: [PATCH v14 06/24] arm,x86,fs/resctrl: Replace architecture capability helpers with generic versions

[Chen Yu]

Hi Tony,

On Mon, Oct 19, 2026 at 01:50:13PM -0700, Tony Luck wrote:
> resctrl supports allocation or monitoring if any resource is capable of
> it. Each architecture answers this via resctrl_arch_alloc_capable() and
> resctrl_arch_mon_capable(). x86 maintains global flags for this in
> addition to the per-resource flags and must keep both in sync. MPAM
> derives the answer from its per-resource flags.
> 
> The per-resource flags are part of the resource description that the file
> system already has, so the architecture helpers duplicate information
> available to the file system.
> 
> Define resctrl_alloc_capable() and resctrl_mon_capable() in the file system
> based on the per-resource flags and remove the architecture helpers, in
> preparation for removing the x86 global flags. The result is unchanged for
> MPAM, which presents all monitors on the L3 resource.
> 
> Suggested-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
> Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx>
> ---
>

Since this possible regress window is very small, and I did not find any issue
in this change,

Reviewed-by: Chen Yu <yu.c.chen@xxxxxxxxx>

thanks,
Chenyu