linux-kernel - Re: [PATCH v5 34/34] MAINTAINERS: new entry for MPAM Driver

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Message-ID: <5a2e41ac-1638-4661-8975-5e1603a15ae4@intel.com>
Date: Mon, 17 Nov 2025 14:08:11 -0800
From: Reinette Chatre <reinette.chatre@...el.com>
To: Catalin Marinas <catalin.marinas@....com>, <gregkh@...uxfoundation.org>,
	Tony Luck <tony.luck@...el.com>
CC: Ben Horgan <ben.horgan@....com>, <james.morse@....com>,
	<amitsinght@...vell.com>, <baisheng.gao@...soc.com>,
	<baolin.wang@...ux.alibaba.com>, <bobo.shaobowang@...wei.com>,
	<carl@...amperecomputing.com>, <dakr@...nel.org>, <dave.martin@....com>,
	<david@...hat.com>, <dfustini@...libre.com>, <fenghuay@...dia.com>,
	<gshan@...hat.com>, <guohanjun@...wei.com>, <jeremy.linton@....com>,
	<jonathan.cameron@...wei.com>, <kobak@...dia.com>, <lcherian@...vell.com>,
	<lenb@...nel.org>, <linux-acpi@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<lpieralisi@...nel.org>, <peternewman@...gle.com>, <quic_jiles@...cinc.com>,
	<rafael@...nel.org>, <robh@...nel.org>, <rohit.mathew@....com>,
	<scott@...amperecomputing.com>, <sdonthineni@...dia.com>,
	<sudeep.holla@....com>, <tan.shaopeng@...itsu.com>, <will@...nel.org>,
	<xhao@...ux.alibaba.com>
Subject: Re: [PATCH v5 34/34] MAINTAINERS: new entry for MPAM Driver

Hi Catalin,

On 11/17/25 12:02 PM, Catalin Marinas wrote:
> On Mon, Nov 17, 2025 at 05:00:13PM +0000, Ben Horgan wrote:
>> Create a maintainer entry for the new MPAM Driver. Add myself and
>> James Morse as maintainers. James created the driver and I have
>> taken up the later versions of his series.
>>
>> Cc: James Morse <james.morse@....com>
>> Signed-off-by: Ben Horgan <ben.horgan@....com>
>> ---
>>  MAINTAINERS | 8 ++++++++
>>  1 file changed, 8 insertions(+)
>>
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index 46bd8e033042..ec9b2b255bef 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -17463,6 +17463,14 @@ S:	Maintained
>>  F:	Documentation/devicetree/bindings/leds/backlight/mps,mp3309c.yaml
>>  F:	drivers/video/backlight/mp3309c.c
>>  
>> +MPAM DRIVER
>> +M:	James Morse <james.morse@....com>
>> +M:	Ben Horgan <ben.horgan@....com>
>> +S:	Maintained
>> +F:	drivers/resctrl/mpam_*
>> +F:	drivers/resctrl/test_mpam_*
>> +F:	include/linux/arm_mpam.h
> 
> Acked-by: Catalin Marinas <catalin.marinas@....com>
> 
> Greg, are you ok with the above maintainers entry? Happy to queue
> patches for this via the arm64 tree (or at least the initial drop).
> 
> Reinette, Tony, I now realised you haven't been cc'ed on this series:
> 
> https://lore.kernel.org/r/20251117170014.4113754-1-ben.horgan@arm.com

Thank you for bringing this to our attention.

> 
> While it doesn't touch fs/resctrl/, it's going to be a user of that API.
> Are you ok with this maintainer setup? I wouldn't mind at all if you
> want to be a co-maintainers or reviewers of drivers/resctrl/* (e.g.
> adding this under the RDT entry) but I guess you would not be looking
> forward to more email traffic.

I am ok with this maintainer setup. Considering the different status roles and values
I think it best to keep these as separate entries in MAINTAINERS.

Even so, I would appreciate being aware how MPAM uses resctrl fs. Being a reviewer
(not maintainer) of the "MPAM DRIVER" should ensure that I am cc'd on future patches,
similar to the roles James and Dave (Martin) have in resctrl fs MAINTAINERS entry. I
understand this is a major addition so I can surely also just do what other folks
do when interested in following the work by using, for example, lei.

Reinette