linux-kernel - [PATCH v8 22/23] mm: Enable PTE markers by default

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Date:   Mon,  4 Apr 2022 21:49:29 -0400
From:   Peter Xu <peterx@...hat.com>
To:     linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:     Mike Kravetz <mike.kravetz@...cle.com>,
        Nadav Amit <nadav.amit@...il.com>,
        Matthew Wilcox <willy@...radead.org>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        David Hildenbrand <david@...hat.com>,
        Hugh Dickins <hughd@...gle.com>,
        Jerome Glisse <jglisse@...hat.com>,
        "Kirill A . Shutemov" <kirill@...temov.name>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Alistair Popple <apopple@...dia.com>, peterx@...hat.com
Subject: [PATCH v8 22/23] 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.

Signed-off-by: Peter Xu <peterx@...hat.com>
---
 mm/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/Kconfig b/mm/Kconfig
index 6e7c2d59fa96..3eca34c864c5 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -911,12 +911,14 @@ config ANON_VMA_NAME
 
 config PTE_MARKER
 	bool "Marker PTEs support"
+	default y
 
 	help
 	  Allows to create marker PTEs for file-backed memory.
 
 config PTE_MARKER_UFFD_WP
 	bool "Marker PTEs support for userfaultfd write protection"
+	default y
 	depends on PTE_MARKER && HAVE_ARCH_USERFAULTFD_WP
 
 	help
-- 
2.32.0