CONFIG_SPARC64_PAGE_SIZE_8KB is not available for thedefaultarchitecture x86.
Result is shown for architecture sparc
default or selected kernelversion does not have config value CONFIG_SPARC64_PAGE_SIZE_8KB.
Result is shown for kernelversion 6.2.5

8KB

configname: CONFIG_SPARC64_PAGE_SIZE_8KB

Kernel page size
└─>8KB
In linux kernel since version 2.6.12  
This lets you select the page size of the kernel.

8KB and 64KB work quite well, since SPARC ELF sections
provide for up to 64KB alignment.

If you don't know what to do, choose 8KB.