linux-kernel - Re: [PATCH v2 28/29] arm_mpam: Add kunit test for bitmap reset

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Message-ID: <848050b3-65d7-4caf-b093-7145eb782a7c@arm.com>
Date: Fri, 12 Sep 2025 17:06:18 +0100
From: Ben Horgan <ben.horgan@....com>
To: James Morse <james.morse@....com>, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-acpi@...r.kernel.org
Cc: D Scott Phillips OS <scott@...amperecomputing.com>,
 carl@...amperecomputing.com, lcherian@...vell.com,
 bobo.shaobowang@...wei.com, tan.shaopeng@...itsu.com,
 baolin.wang@...ux.alibaba.com, Jamie Iles <quic_jiles@...cinc.com>,
 Xin Hao <xhao@...ux.alibaba.com>, peternewman@...gle.com,
 dfustini@...libre.com, amitsinght@...vell.com,
 David Hildenbrand <david@...hat.com>, Dave Martin <dave.martin@....com>,
 Koba Ko <kobak@...dia.com>, Shanker Donthineni <sdonthineni@...dia.com>,
 fenghuay@...dia.com, baisheng.gao@...soc.com,
 Jonathan Cameron <jonathan.cameron@...wei.com>, Rob Herring
 <robh@...nel.org>, Rohit Mathew <rohit.mathew@....com>,
 Rafael Wysocki <rafael@...nel.org>, Len Brown <lenb@...nel.org>,
 Lorenzo Pieralisi <lpieralisi@...nel.org>, Hanjun Guo
 <guohanjun@...wei.com>, Sudeep Holla <sudeep.holla@....com>,
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Danilo Krummrich <dakr@...nel.org>
Subject: Re: [PATCH v2 28/29] arm_mpam: Add kunit test for bitmap reset

Hi James,

On 9/10/25 21:43, James Morse wrote:
> The bitmap reset code has been a source of bugs. Add a unit test.
> 
> This currently has to be built in, as the rest of the driver is
> builtin.
> 
> Suggested-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Signed-off-by: James Morse <james.morse@....com>
> ---
>  drivers/resctrl/Kconfig             | 10 +++++
>  drivers/resctrl/mpam_devices.c      |  4 ++
>  drivers/resctrl/test_mpam_devices.c | 68 +++++++++++++++++++++++++++++
>  3 files changed, 82 insertions(+)
>  create mode 100644 drivers/resctrl/test_mpam_devices.c
> 
> diff --git a/drivers/resctrl/Kconfig b/drivers/resctrl/Kconfig
> index c30532a3a3a4..ef59b3057d5d 100644
> --- a/drivers/resctrl/Kconfig
> +++ b/drivers/resctrl/Kconfig
> @@ -5,10 +5,20 @@ menuconfig ARM64_MPAM_DRIVER
>  	  MPAM driver for System IP, e,g. caches and memory controllers.
>  
>  if ARM64_MPAM_DRIVER
> +

Nit: add the empty line in an earlier patch

Reviewed-by: Ben Horgan <ben.horgan@....com>

Thanks,

Ben