debugger. See <http://kgdb.sourceforge.net/> for more information.
Unless you are intending to debug the kernel, say N here.
+config CODE_PATCHING_SELFTEST
+ bool "Run self-tests of the code-patching code."
+ depends on DEBUG_KERNEL
+ default n
+
+config FTR_FIXUP_SELFTEST
+ bool "Run self-tests of the feature-fixup code."
+ depends on DEBUG_KERNEL
+ default n
+
choice
prompt "Serial Port"
depends on KGDB