CONFIG_HAVE_ARCH_USERFAULTFD_WP (not configurable)
configname: CONFIG_HAVE_ARCH_USERFAULTFD_WP
Linux Kernel Configuration
└─>Memory Management options
└─>HAVE_ARCH_USERFAULTFD_WP
In linux kernel since version 5.2 (release Date: 2019-07-07)
Arch has userfaultfd write protection support