The patch titled
Subject: s390: enable MHP_MEMMAP_ON_MEMORY
has been added to the -mm mm-unstable branch. Its filename is
s390-enable-mhp_memmap_on_memory.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/s390-enable-mhp_memmap_on_memory.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Sumanth Korikkar <sumanthk@xxxxxxxxxxxxx>
Subject: s390: enable MHP_MEMMAP_ON_MEMORY
Date: Mon, 8 Jan 2024 14:27:47 +0100
Enable MHP_MEMMAP_ON_MEMORY to support "memmap on memory".
memory_hotplug.memmap_on_memory=true kernel parameter should be set in
kernel boot option to enable the feature.
Link: https://lkml.kernel.org/r/20240108132747.3238763-6-sumanthk@xxxxxxxxxxxxx
Reviewed-by: Gerald Schaefer <gerald.schaefer@xxxxxxxxxxxxx>
Signed-off-by: Sumanth Korikkar <sumanthk@xxxxxxxxxxxxx>
Cc: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Cc: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/s390/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/arch/s390/Kconfig~s390-enable-mhp_memmap_on_memory
+++ a/arch/s390/Kconfig
@@ -113,6 +113,7 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_BH
select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
+ select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
select ARCH_STACKWALK
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_DEBUG_PAGEALLOC
_
Patches currently in -mm which might be from sumanthk@xxxxxxxxxxxxx are
mm-memory_hotplug-introduce-mem_prepare_online-mem_finish_offline-notifiers.patch
s390-mm-allocate-vmemmap-pages-from-self-contained-memory-range.patch
s390-sclp-remove-unhandled-memory-notifier-type.patch
s390-mm-implement-mem_prepare_online-mem_finish_offline-notifiers.patch
s390-enable-mhp_memmap_on_memory.patch
