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SubjectRe: [PATCH] arm64: Support CMDLINE_EXTEND
On Tue, Mar 21, 2023 at 10:14:51AM +1300, 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@alliedtelesis.co.nz>

We deliberately dropped support for CMDLINE_EXTEND in commit:

cae118b6acc3 ("arm64: Drop support for CMDLINE_EXTEND")

... which was mentioned the last time somone tried to re-add it:

https://lore.kernel.org/linux-arm-kernel/ZAh8dWvbNkVQT11C@arm.com/

Has something changes such that those issues no longer apply? If so, please
call that out explicitly in the commit message. If not, I do not think we
should take this patch.

Thanks,
Mark.

> ---
> 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
> --
> 2.40.0
>

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