CONFIG_ARM64_PTDUMP_DEBUGFS is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64

Export kernel pagetable layout to userspace via debugfs

modulename: ptdump_debugfs.ko

configname: CONFIG_ARM64_PTDUMP_DEBUGFS

Linux Kernel Configuration
└─>Export kernel pagetable layout to userspace via debugfs
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Say Y here if you want to show the kernel pagetable layout in a
debugfs file. This information is only useful for kernel developers
who are working in architecture specific areas of the kernel.
It is probably not a good idea to enable this feature in a production
kernel.

If in doubt, say N.

source code: