CONFIG_ARCH_SPARSEMEM_ENABLE is not available for thedefaultarchitecture x86.
Result is shown for architecture avr32
CONFIG_ARCH_SPARSEMEM_ENABLE (not configurable)
configname: CONFIG_ARCH_SPARSEMEM_ENABLE
Linux Kernel Configuration
└─>System Type and features
└─>ARCH_SPARSEMEM_ENABLE