linux-kernel - Re: [PATCH 6/8] arm64: dts: Add Arm Morello System Development Platform support

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Message-ID: <bc4ff071-ffc5-4b16-8e3a-977e47475816@kernel.org>
Date: Sat, 14 Dec 2024 11:14:53 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Vincenzo Frascino <vincenzo.frascino@....com>,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Sudeep Holla <sudeep.holla@....com>, Rob Herring <robh@...nel.org>
Subject: Re: [PATCH 6/8] arm64: dts: Add Arm Morello System Development
 Platform support

On 13/12/2024 17:32, Vincenzo Frascino wrote:
> The Morello architecture is an experimental extension to Armv8.2-A,
> which extends the AArch64 state with the principles proposed in
> version 7 of the Capability Hardware Enhanced RISC Instructions
> (CHERI) ISA.
> 
> Introduce Arm Morello System Development Platform support.
> 
> Cc: Sudeep Holla <sudeep.holla@....com>
> Cc: Rob Herring <robh@...nel.org>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....com>
> ---
>  arch/arm64/boot/dts/arm/Makefile | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/arm/Makefile b/arch/arm64/boot/dts/arm/Makefile
> index d908e96d7ddc..0a821808692e 100644
> --- a/arch/arm64/boot/dts/arm/Makefile
> +++ b/arch/arm64/boot/dts/arm/Makefile
> @@ -7,3 +7,4 @@ dtb-$(CONFIG_ARCH_VEXPRESS) += rtsm_ve-aemv8a.dtb
>  dtb-$(CONFIG_ARCH_VEXPRESS) += vexpress-v2f-1xv7-ca53x2.dtb
>  dtb-$(CONFIG_ARCH_VEXPRESS) += fvp-base-revc.dtb
>  dtb-$(CONFIG_ARCH_VEXPRESS) += corstone1000-fvp.dtb corstone1000-mps3.dtb
> +dtb-$(CONFIG_ARCH_MORELLO) += morello-soc.dtb

No, you organize patches in insane way. Makefile is never, never
separate entry.

Look how all existing submissions were done.

Squash the patches.

You also did not CC several people and at least arm kernel list. Use
standard tools for development instead of inventing your own process.

<form letter>
Please use scripts/get_maintainers.pl to get a list of necessary people
and lists to CC (and consider --no-git-fallback argument, so you will
not CC people just because they made one commit years ago). It might
happen, that command when run on an older kernel, gives you outdated
entries. Therefore please be sure you base your patches on recent Linux
kernel.

Tools like b4 or scripts/get_maintainer.pl provide you proper list of
people, so fix your workflow. Tools might also fail if you work on some
ancient tree (don't, instead use mainline) or work on fork of kernel
(don't, instead use mainline). Just use b4 and everything should be
fine, although remember about `b4 prep --auto-to-cc` if you added new
patches to the patchset.
</form letter>

Best regards,
Krzysztof