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

CONFIG_CPU_HAS_DIEI (not configurable)

configname: CONFIG_CPU_HAS_DIEI

Linux Kernel Configuration
└─>Kernel type
└─>CPU_HAS_DIEI
In linux kernel since version 5.1 (release Date: 2019-05-05)