CONFIG_DEBUG_KERNEL_WITH_GDB_STUB is not available for thedefaultarchitecture x86.
Result is shown for architecture sh64
default or selected kernelversion does not have config value CONFIG_DEBUG_KERNEL_WITH_GDB_STUB.
Result is shown for kernelversion 5.4.123
GDB Stub kernel debug
configname: CONFIG_DEBUG_KERNEL_WITH_GDB_STUB
Linux Kernel Configuration
└─>Kernel hacking
└─>GDB Stub kernel debug