Re: [PATCH v3 0/2] x86/resctrl: Fix Platform QoS issues for Hygon

From: Reinette Chatre
Date: Thu Jan 08 2026 - 11:13:18 EST


Dear x86 maintainers,

Could you please consider this series for inclusion?

Thank you very much.

Reinette

On 12/8/25 10:26 PM, Xiaochen Shen wrote:
> This patch series fixes two issues regarding Platform QoS (resctrl)
> support on Hygon CPUs.
>
> The first patch adds the missing initialization sequence required for
> proper resctrl functionality. The second patch corrects the bit-width
> configuration for the Memory Bandwidth Monitoring (MBM) counter.
>
> Changelog:
> v3:
> - Remove the "Fixes: 923f3a2b48bd..." tag in two patches because this
> commit itself doesn't have an issue (Fenghua).
>
> v2:
> - Add "Reviewed-by:" tag in patch 1/2:
> "Reviewed-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>"
> - Add "Reviewed-by:" tags in patch 2/2:
> "Reviewed-by: Tony Luck <tony.luck@xxxxxxxxx>"
> "Reviewed-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>"
> - Move the "Cc: stable@xxxxxxxxxxxxxxx" tag to be after the author's SoB
> to comply with tip tree rules (Reinette)
>
> Xiaochen Shen (2):
> x86/resctrl: Add missing resctrl initialization for Hygon
> x86/resctrl: Fix memory bandwidth counter width for Hygon
>
> arch/x86/kernel/cpu/resctrl/core.c | 21 +++++++++++++++++----
> arch/x86/kernel/cpu/resctrl/internal.h | 3 +++
> 2 files changed, 20 insertions(+), 4 deletions(-)
>