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| author | Peter Xu <peterx@redhat.com> | 2022-05-13 05:22:56 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-05-13 16:20:11 +0200 |
| commit | 81e0f15f2ef6dad7ccb9c03d8e61ef7ded836b38 (patch) | |
| tree | 354efff87a43d6b361730962f5ab864e7f06288a /mm/Kconfig | |
| parent | mm/uffd: enable write protection for shmem & hugetlbfs (diff) | |
| download | linux-81e0f15f2ef6dad7ccb9c03d8e61ef7ded836b38.tar.xz 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/Kconfig | 8 |
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 |