Re: [PATCH] arm64: Kconfig: add CONFIG_CMDLINE_EXTEND

[Paul Cercueil <paul.cercueil@bootlin.com>]

Hi Will,

Le mardi 03 novembre 2026 à 11:17 +0000, Will Deacon a écrit :
> On Tue, Nov 03, 2026 at 09:41:40AM +0100, Paul Cercueil wrote:
> > Other archs have it, and it is supported in arch-independent code, so I
> > see no reason why it is not provided on Aarch64. Add it there.
> > 
> > Signed-off-by: Paul Cercueil <paul.cercueil@bootlin.com>
> > ---
> >  arch/arm64/Kconfig | 6 ++++++
> >  1 file changed, 6 insertions(+)
> > 
> > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> > index 1075bc661833..f8542e532b50 100644
> > --- a/arch/arm64/Kconfig
> > +++ b/arch/arm64/Kconfig
> > @@ -2551,6 +2551,12 @@ 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.
> 
> We previously reverted this in cae118b6acc3 ("arm64: Drop support for
> CMDLINE_EXTEND") and I think that reasoning still applies. The thing
> that _has_ changed since then, is that I think bootconfig now has some
> support for early params, so that's really what people should be using
> here.

I didn't know about bootconfig, that looks like exactly what I need, thanks!

Cheers,
-Paul