The patch titled
Subject: mm/Kconfig: make userfaultfd a menuconfig
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-kconfig-make-userfaultfd-a-menuconfig.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-kconfig-make-userfaultfd-a-menuconfig.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Peter Xu <peterx@xxxxxxxxxx>
Subject: mm/Kconfig: make userfaultfd a menuconfig
Date: Thu, 23 Nov 2023 17:42:04 -0500
PTE_MARKER_UFFD_WP is a subconfig for userfaultfd. To make it clear,
switch to use menuconfig for userfaultfd.
Link: https://lkml.kernel.org/r/20231123224204.1060152-1-peterx@xxxxxxxxxx
Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Axel Rasmussen <axelrasmussen@xxxxxxxxxx>
Cc: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/Kconfig | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
--- a/mm/Kconfig~mm-kconfig-make-userfaultfd-a-menuconfig
+++ a/mm/Kconfig
@@ -1201,13 +1201,6 @@ config ANON_VMA_NAME
area from being merged with adjacent virtual memory areas due to the
difference in their name.
-config USERFAULTFD
- bool "Enable userfaultfd() system call"
- depends on MMU
- help
- Enable the userfaultfd() system call that allows to intercept and
- handle page faults in userland.
-
config HAVE_ARCH_USERFAULTFD_WP
bool
help
@@ -1218,6 +1211,14 @@ config HAVE_ARCH_USERFAULTFD_MINOR
help
Arch has userfaultfd minor fault support
+menuconfig USERFAULTFD
+ bool "Enable userfaultfd() system call"
+ depends on MMU
+ help
+ Enable the userfaultfd() system call that allows to intercept and
+ handle page faults in userland.
+
+if USERFAULTFD
config PTE_MARKER_UFFD_WP
bool "Userfaultfd write protection support for shmem/hugetlbfs"
default y
@@ -1227,6 +1228,7 @@ config PTE_MARKER_UFFD_WP
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.
+endif # USERFAULTFD
# multi-gen LRU {
config LRU_GEN
_
Patches currently in -mm which might be from peterx@xxxxxxxxxx are
mm-pagemap-fix-ioctlpagemap_scan-on-vma-check.patch
mm-pagemap-fix-wr-protect-even-if-pm_scan_wp_matching-not-set.patch
mm-selftests-fix-pagemap_ioctl-memory-map-test.patch
mm-kconfig-make-userfaultfd-a-menuconfig.patch
fs-kconfig-make-hugetlbfs-a-menuconfig.patch
