Re: [PATCH v8 2/9] x86/resctrl: Require 64-bit x86 for resctrl support

From: Reinette Chatre

Date: Mon Sep 28 2026 - 17:21:55 EST


Hi Chenyu,

On 9/17/26 9:48 PM, Chen Yu wrote:
> From: Tony Luck <tony.luck@xxxxxxxxx>
>
> Intel Application Energy Telemetry (AET) provides event counts in 64-bit
> registers in MMIO space. For accurate results these should be read with a
> single 64-bit load operation from the CPU.
>
> In preparation for the removal of the separate CONFIG_X86_CPU_RESCTRL_INTEL_AET
> configuration option, move the X86_64 dependency to X86_CPU_RESCTRL.
>
> This in line with Dave Hansen's proposal[1] for an addition to Linux
> documentation that details the state of 32-bit x86 support.
>
> Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx>
> Signed-off-by: Chen Yu <yu.c.chen@xxxxxxxxx>
> Link: https://lore.kernel.org/all/c6ab0c24-8931-4f0d-9be6-23498ab4c38b@xxxxxxxxx/ # [1]
> ---

This patch is being submitted as part of two different series. That is ok
but the versions need to be consistent. To help with this I'll not add any
comments here but instead just point to most recent review:

https://lore.kernel.org/lkml/15de2e2f-fc2e-4d06-9179-100398865624@xxxxxxxxx/

Reinette