From: Justin M. Forbes on
gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2110#note_1142...
Correct, this MR will do nothing. We already have:
```
cat redhat/configs/common/generic/CONFIG_PTE_MARKER_UFFD_WP
CONFIG_PTE_MARKER_UFFD_WP=y
```
And:
```
config PTE_MARKER_UFFD_WP
bool "Userfaultfd write protection support for shmem/hugetlbfs"
default y
depends on HAVE_ARCH_USERFAULTFD_WP
select PTE_MARKER
```
So this config is already enabled.