CONFIG_ARCH_VULCAN is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
default or selected kernelversion does not have config value CONFIG_ARCH_VULCAN.
Result is shown for kernelversion 6.9.5

CONFIG_ARCH_VULCAN (not configurable)

configname: CONFIG_ARCH_VULCAN

Linux Kernel Configuration
└─>Platform selection
└─>ARCH_VULCAN
In linux kernel since version 4.1 (release Date: 2015-06-21)