CONFIG_CMDLINE_FROM_BOOTLOADER is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Use bootloader kernel arguments if available
configname: CONFIG_CMDLINE_FROM_BOOTLOADER
Kernel command line type
└─>Use bootloader kernel arguments if available
In linux kernel since version 3 (release Date: 2011-07-21)
Uses the command-line options passed by the boot loader. If
the boot loader doesn't provide any, the default kernel command
string provided in CMDLINE will be used.
the boot loader doesn't provide any, the default kernel command
string provided in CMDLINE will be used.