CONFIG_CMDLINE_EXTEND is not available for the selected architecture x86.
Result is shown for architecture riscv
Extend bootloader kernel arguments
configname: CONFIG_CMDLINE_EXTEND
Built-in command line usage
└─>Extend bootloader kernel arguments
In linux kernel since version 2.6.32 (release Date: 2009-12-02)
The built-in command line will be appended to the command-
line arguments provided during boot. This is useful in
cases where the provided arguments are insufficient and
you don't want to or cannot modify them.
line arguments provided during boot. This is useful in
cases where the provided arguments are insufficient and
you don't want to or cannot modify them.