+ mm-kconfig-make-memory_failure-select-migration.patch added to mm-new branch

The patch titled
     Subject: mm/Kconfig: make MEMORY_FAILURE select MIGRATION
has been added to the -mm mm-new branch.  Its filename is
     mm-kconfig-make-memory_failure-select-migration.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-memory_failure-select-migration.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.

The mm-new branch of mm.git is not included in linux-next

If a few days of testing in mm-new is successful, the patch will me moved
into mm.git's mm-unstable branch, which is included in linux-next

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------------------------------------------------------
From: Xie Yuanbin <[email protected]>
Subject: mm/Kconfig: make MEMORY_FAILURE select MIGRATION
Date: Thu, 13 Aug 2026 21:49:16 +0800

For embedded devices, lacking support for NUMA, memory hotplug/hotremove,
CMA and huge pages is a quite common scenario.  In this scenario, the
demand for contiguous physical memory allocation is very low.  To reduce
the kernel image size, some devices disable the compaction.  However,
their SoCs do support DDR ECC, meaning that memory-failure may be needed.

Migration is very useful for soft_offline_page() in memory-failure, which
may be triggered by correctable memory errors.  Most anonymous and
file-mapped faulty pages can be migrated to other healthy pages.

Currently, MEMORY_FAILURE does not explicitly select MIGRATION.  When
COMPACTION, MEMORY_HOTREMOVE, NUMA_MIGRATION and CMA are all disabled,
MEMORY_FAILURE can be enabled, but MIGRATION cannot be selected.

Make MEMORY_FAILURE select MIGRATION to handle this situation.

Link: https://lore.kernel.org/[email protected]
Signed-off-by: Xie Yuanbin <[email protected]>
Suggested-by: Mike Rapoport <[email protected]>
Reviewed-by: Lorenzo Stoakes (ARM) <[email protected]>
Reviewed-by: Mike Rapoport (Microsoft) <[email protected]>
Acked-by: Zi Yan <[email protected]>
Cc: David Hildenbrand (Arm) <[email protected]>
Cc: Miaohe Lin <[email protected]>
Cc: Alistair Popple <[email protected]>
Cc: "Borislav Petkov (AMD)" <[email protected]>
Cc: Byungchul Park <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Gregory Price <[email protected]>
Cc: "Huang, Ying" <[email protected]>
Cc: Joshua Hahn <[email protected]>
Cc: Liam R. Howlett <[email protected]>
Cc: liaohua <[email protected]>
Cc: "Luck, Tony" <[email protected]>
Cc: Matthew Brost <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Naoya Horiguchi <[email protected]>
Cc: Rakie Kim <[email protected]>
Cc: Suren Baghdasaryan <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Yuanbin Xie <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

 mm/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/mm/Kconfig~mm-kconfig-make-memory_failure-select-migration
+++ a/mm/Kconfig
@@ -767,6 +767,7 @@ config MEMORY_FAILURE
 	depends on ARCH_SUPPORTS_MEMORY_FAILURE
 	bool "Enable recovery from hardware memory errors"
 	select INTERVAL_TREE
+	select MIGRATION
 	help
 	  Enables code to recover from some memory failures on systems
 	  with MCA recovery. This allows a system to continue running
_

Patches currently in -mm which might be from [email protected] are

mm-kconfig-make-memory_failure-select-migration.patch