CONFIG_ERRATA_THEAD is not available for thedefaultarchitecture x86.
Result is shown for architecture riscv

T-HEAD errata

configname: CONFIG_ERRATA_THEAD

Linux Kernel Configuration
└─>CPU errata selection
└─>T-HEAD errata
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
All T-HEAD errata Kconfig depend on this Kconfig. Disabling
this Kconfig will disable all T-HEAD errata. Please say "Y"
here if your platform uses T-HEAD CPU cores.

Otherwise, please say "N" here to avoid unnecessary overhead.