CONFIG_HAVE_ARCH_NODEDATA_EXTENSION is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_HAVE_ARCH_NODEDATA_EXTENSION (not configurable)

configname: CONFIG_HAVE_ARCH_NODEDATA_EXTENSION

Linux Kernel Configuration
└─>Kernel type
└─>HAVE_ARCH_NODEDATA_EXTENSION
In linux kernel since version 2.6.18 (release Date: 2006-09-19)