CONFIG_PPC_64K_PAGES is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

64k page size

modulename: hash_64k.ko

configname: CONFIG_PPC_64K_PAGES

Page size
└─>64k page size
In linux kernel since version 2.6.15 (release Date: 2006-01-02)  
source code:
arch/powerpc/mm/book3s64/hash_64k.c