linux-kernel - Re: [PATCH] arm64: Support CMDLINE

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Message-ID: <ae0f64c2-8a3a-a077-d03d-58af2ed69f90@arm.com>
Date:   Tue, 21 Mar 2023 16:15:26 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Chris Packham <chris.packham@...iedtelesis.co.nz>,
        catalin.marinas@....com, will@...nel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: Support CMDLINE_EXTEND



On 3/21/23 02:44, Chris Packham wrote:
> Support extending the bootloader provided command line for arm64
> targets. This support is already present via generic DT/EFI code the
> only thing required is for the architecture to make it selectable.
> 
> Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
> ---
>  arch/arm64/Kconfig | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 1023e896d46b..3c837b085f21 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -2228,6 +2228,12 @@ config CMDLINE_FROM_BOOTLOADER
>  	  the boot loader doesn't provide any, the default kernel command
>  	  string provided in CMDLINE will be used.
>  
> +config CMDLINE_EXTEND
> +	bool "Extend bootloader kernel arguments"
> +	help
> +	  The command-line arguments provided by the boot loader will be
> +	  appended to the default kernel command string.
> +
>  config CMDLINE_FORCE
>  	bool "Always use the default kernel command string"
>  	help

LGTM, FWIW

Reviewed-by: Anshuman Khandual <anshuman.khandual@....com>