CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG is not available for thedefaultarchitecture x86.
Result is shown for architecture ia64
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG (not configurable)
configname: CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG
IA-64 Linux Kernel Configuration
└─>Processor type and features
└─>ARCH_ENABLE_MEMORY_HOTPLUG