Re: [PATCH RFC v2 00/19] arm,fs/resctrl: ARM MPAM MB_NODE support

[Jinjie Ruan <ruanjinjie@huawei.com>]

在 2026/10/23 22:51, Reinette Chatre 写道:
> Hi Jinjie,
> 
> On 10/22/26 6:23 PM, Jinjie Ruan wrote:
>>
>>
>> 在 2026/9/1 1:22, Fenghua Yu 写道:
>>> This series enables MBA bandwidth control emulation on ARM MPAM when the
>>> default MB control is disabled, using a node-scoped MB_NODE control as
>>> the native backend.  It extends memory-bandwidth monitoring and
>>
>> Hi everyone,
>>
>> We also have the requirement for the MPAM node-scoped MB_NODE control.
>> Are there any follow-up plans for this feature?
>>
>> Is there anything I can help with?
>>
> 
> ...
> 
>>>
>>> Apply the patches on top of [2].
>>>
> 
> ...
> 
>>>
>>> This series is in https://github.com/fyu1/linux/  cpu_less.rfc.v2/
>>> which is on top of [2].
>>>
> 
> ...
> 
>>>
>>> [1] [RFC v2] mpam,x86,fs/resctrl: Generic schema description Proof of Concept https://lore.kernel.org/lkml/d258a32f-12d5-464d-abe9-4720fb3e44b3@intel.com/
>>> [2] Reinette's resctrl control branch RFC v2: git://git.kernel.org/pub/scm/linux/kernel/git/reinette/linux.git branch resctrl/controls_rfc_v2.4
>>>
> This work depends on [2] around which I believe all discussions have now settled
> with the planned changes shared during LPC:
> https://lpc.events/event/20/contributions/2368/attachments/2066/4625/resctrl_2026_combined.pdf
> 
> Please note, as highlighted in 
> 
> 	https://lore.kernel.org/lkml/9d2f589a-7d10-44ee-a7a4-7d75d860e988@arm.com/

Hi Reinette，

Thank you very much for sharing.

> 
> as well as the LPC presentation, that the support for MB_NODE is planned to look
> different from what is presented in this RFC.
> 
> Upstreaming of [2] started with two series currently outstanding:
> 
> "x86,fs/resctrl: Cleanups in preparation for multiple controls support"
> 	https://lore.kernel.org/lkml/cover.1791406459.git.reinette.chatre@intel.com/
> 
> "arm_mpam: resctrl: Separate MPAM domains"
> 	https://lore.kernel.org/lkml/cover.1792443633.git.reinette.chatre@intel.com/

Let me start with these two patch sets.

> 
> I see that you already started to take a look at the MPAM changes. That is much appreciated.
> Any reviews are much appreciated.
> 
> Once the above two outstanding series land I will work on the next batch of the foundational
> work on which the MB_NODE support can be created.


Thank you for your detailed guidance. I will keep pace with everyone and
help review and test the latest upstream changes.

> 
> Reinette

-- 
Best regards,
Jinjie