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 Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Sumanth Korikkar <sumanthk@xxxxxxxxxxxxx> Subject: s390: enable MHP_MEMMAP_ON_MEMORY Date: Tue, 28 Nov 2023 16:52:27 +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/20231128155227.1315063-6-sumanthk@xxxxxxxxxxxxx Signed-off-by: Sumanth Korikkar <sumanthk@xxxxxxxxxxxxx> Reviewed-by: Gerald Schaefer <gerald.schaefer@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-add-missing-mem_hotplug_lock.patch mm-memory_hotplug-fix-error-handling-in-add_memory_resource.patch mm-use-vmem_altmap-code-without-config_zone_device.patch 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