CONFIG_XMON_DEFAULT is not available for the selected architecture x86.
Result is shown for architecture powerpc
Enable xmon by default
configname: CONFIG_XMON_DEFAULT
Linux Kernel Configuration
└─>Enable xmon by default
In linux kernel since version 2.6.12 )
xmon is normally disabled unless booted with 'xmon=on'.
Use 'xmon=off' to disable xmon init during runtime.
Use 'xmon=off' to disable xmon init during runtime.