summaryrefslogtreecommitdiffstats
path: root/mm/Kconfig
diff options
context:
space:
mode:
authorPeter Xu <peterx@redhat.com>2022-05-12 20:22:56 -0700
committerAndrew Morton <akpm@linux-foundation.org>2022-05-13 07:20:11 -0700
commit81e0f15f2ef6dad7ccb9c03d8e61ef7ded836b38 (patch)
tree354efff87a43d6b361730962f5ab864e7f06288a /mm/Kconfig
parentb1f9e876862d8f7176299ec4fb2108bc1045cbc8 (diff)
downloadlinux-81e0f15f2ef6dad7ccb9c03d8e61ef7ded836b38.tar.gz
linux-81e0f15f2ef6dad7ccb9c03d8e61ef7ded836b38.tar.bz2
linux-81e0f15f2ef6dad7ccb9c03d8e61ef7ded836b38.zip
mm: enable PTE markers by default
Enable PTE markers by default. On x86_64 it means it'll auto-enable PTE_MARKER_UFFD_WP as well. [peterx@redhat.com: hide PTE_MARKER option] Link: https://lkml.kernel.org/r/20220419202531.27415-1-peterx@redhat.com Link: https://lkml.kernel.org/r/20220405014929.15158-1-peterx@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: "Kirill A . Shutemov" <kirill@shutemov.name> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Nadav Amit <nadav.amit@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/Kconfig')
-rw-r--r--mm/Kconfig8
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 71c653260a44..fd6c9fe4b6ed 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -910,14 +910,16 @@ config ANON_VMA_NAME
difference in their name.
config PTE_MARKER
- bool "Marker PTEs support"
+ bool
help
Allows to create marker PTEs for file-backed memory.
config PTE_MARKER_UFFD_WP
- bool "Marker PTEs support for userfaultfd write protection"
- depends on PTE_MARKER && HAVE_ARCH_USERFAULTFD_WP
+ bool "Userfaultfd write protection support for shmem/hugetlbfs"
+ default y
+ depends on HAVE_ARCH_USERFAULTFD_WP
+ select PTE_MARKER
help
Allows to create marker PTEs for userfaultfd write protection