[PATCH] arm64: Extend arm64 Kconfig to contain CMDLINE_EXTEND

[PATCH] arm64: Extend arm64 Kconfig to contain CMDLINE_EXTEND

[Koehrer Mathias (ETAS/EES-SL)]

Extend arm64 Kconfig to contain CMDLINE_EXTEND

The config variable CMDLINE_EXTEND is already available in some
architectures, however it is missing in arm64.
This patch adds this config variable for architecture arm64.

Signed-off-by: Mathias Koehrer <mathias.koehrer@etas.com>
---
Index: linux-5.4/arch/arm64/Kconfig
===================================================================
--- linux-5.4.orig/arch/arm64/Kconfig
+++ linux-5.4/arch/arm64/Kconfig
@@ -1596,6 +1596,13 @@ config CMDLINE
 	  entering them here. As a minimum, you should specify the the
 	  root device (e.g. root=/dev/nfs).

+config CMDLINE_EXTEND
+	bool "Extend bootloader kernel arguments"
+	default n
+	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
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Re: [PATCH] arm64: Extend arm64 Kconfig to contain CMDLINE_EXTEND

[Catalin Marinas]

On Mon, Nov 02, 2020 at 12:12:19PM +0000, Koehrer Mathias (ETAS/EES-SL) wrote:
> Extend arm64 Kconfig to contain CMDLINE_EXTEND
> 
> The config variable CMDLINE_EXTEND is already available in some
> architectures, however it is missing in arm64.
> This patch adds this config variable for architecture arm64.
> 
> Signed-off-by: Mathias Koehrer <mathias.koehrer@etas.com>

There was at least another patch series proposing CMDLINE_EXTENDED.
Could you please check that to see whether it meets your needs:

https://lore.kernel.org/r/20200921191557.350256-1-tyhicks@linux.microsoft.com/

Tyler's series seems to cover an issue with searching for the "nokaslr"
string in the cmdline arguments when using the extended option.

-- 
Catalin

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