Commit 97219cc3 authored by Peter Xu's avatar Peter Xu Committed by Andrew Morton
Browse files

mm/Kconfig: make userfaultfd a menuconfig 

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@redhat.com


Signed-off-by: default avatarPeter Xu <peterx@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent f39fb633

mm/Kconfig

+9 −7
Original line number Diff line number Diff line
@@ -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