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Subject[PATCH] mm/uffd: Hide PTE_MARKER option
Date
The PTE_MARKER option should not need to be exposed to the kernel builder,
keep it internal and remove the prompt so it won't be seen.

Instead, make the PTE_MARKER_UFFD_WP option to explicitly choose PTE_MARKER
when necessary.

While PTE_MARKER_UFFD_WP will still prompt to user, change the wording so
that it'll not mention PTE_MARKER at all but renaming it to "Userfaultfd
write protection support for shmem/hugetlbfs".

Reported-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
---

NOTE: IMHO this patch can either be standalone if easier, or be squashed
into patch "mm: Enable PTE markers by default" in -mm.

Please review, thanks.
---
mm/Kconfig | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index 3eca34c864c5..d740e1ff3b2f 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -910,16 +910,16 @@ config ANON_VMA_NAME
difference in their name.

config PTE_MARKER
- bool "Marker PTEs support"
- default y
+ bool

help
Allows to create marker PTEs for file-backed memory.

config PTE_MARKER_UFFD_WP
- bool "Marker PTEs support for userfaultfd write protection"
+ bool "Userfaultfd write protection support for shmem/hugetlbfs"
default y
- depends on PTE_MARKER && HAVE_ARCH_USERFAULTFD_WP
+ depends on HAVE_ARCH_USERFAULTFD_WP
+ select PTE_MARKER

help
Allows to create marker PTEs for userfaultfd write protection
--
2.32.0
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