CONFIG_AS_HAS_ARMV8_5 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
CONFIG_AS_HAS_ARMV8_5 (not configurable)
configname: CONFIG_AS_HAS_ARMV8_5
Linux Kernel Configuration
└─>Kernel Features
└─>ARMv8.5 architectural features
└─>AS_HAS_ARMV8_5