Userfaultfd write protection support for shmem/hugetlbfs
configname: CONFIG_PTE_MARKER_UFFD_WP
Linux Kernel Configuration
└─>Memory Management options
└─>Userfaultfd write protection support for shmem/hugetlbfs
In linux kernel since version 4.14.326 (release Date: 2023-09-23)
Allows to create marker PTEs for userfaultfd write protection
purposes. It is required to enable userfaultfd write protection on
file-backed memory types like shmem and hugetlbfs.
purposes. It is required to enable userfaultfd write protection on
file-backed memory types like shmem and hugetlbfs.