default or selected kernelversion does not have config value CONFIG_K8_NUMA.
Result is shown for kernelversion 5.4.69

Old style AMD Opteron NUMA detection

modulename: k8topology_64.ko

configname: CONFIG_K8_NUMA

Linux Kernel Configuration
└─>Processor type and features
└─>Old style AMD Opteron NUMA detection
In linux kernel since version 2.6.12  
Enable K8 NUMA node topology detection. You should say Y here if
you have a multi processor AMD K8 system. This uses an old
method to read the NUMA configuration directly from the builtin
Northbridge of Opteron. It is recommended to use X86_64_ACPI_NUMA
instead, which also takes priority if both are compiled in.

source code: