CONFIG_LD_HEAD_STUB_CATCH is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

Reserve 256 bytes to cope with linker stubs in HEAD text

configname: CONFIG_LD_HEAD_STUB_CATCH

Linux Kernel Configuration
└─>Kernel options
└─>Reserve 256 bytes to cope with linker stubs in HEAD text
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Very large kernels can cause linker branch stubs to be generated by
code in head_64.S, which moves the head text sections out of their
specified location. This option can work around the problem.

If unsure, say "N".

depends
CONFIG_PPC64