CONFIG_PAGE_STATES is not available for thedefaultarchitecture x86.
Result is shown for architecture s390
default or selected kernelversion does not have config value CONFIG_PAGE_STATES.
Result is shown for kernelversion 5.3.7

Unused page notification

modulename: page-states.ko

configname: CONFIG_PAGE_STATES

Linux Kernel Configuration
└─>Base setup
└─>Unused page notification
In linux kernel since version 2.6.26 (release Date: 2008-07-13)  
This enables the notification of unused pages to the
hypervisor. The ESSA instruction is used to do the states
changes between a page that has content and the unused state.

source code: