Re: [PATCH 3/4] s390/sclp: Remove MHP_OFFLINE_INACCESSIBLE

From: David Hildenbrand

Date: Tue Oct 07 2025 - 15:40:04 EST


On 26.09.25 15:15, Sumanth Korikkar wrote:
mhp_flag MHP_OFFLINE_INACCESSIBLE was used to mark memory as not
accessible until memory hotplug online phase begins.

Earlier, standby memory blocks were added upfront during boottime and
MHP_OFFLINE_INACCESSIBLE flag avoided page_init_poison() on memmap
during mhp addtion phase.

However with dynamic runtime configuration of memory, standby memory can
be brought to accessible state before performing add_memory(). Hence,
remove MHP_OFFLINE_INACCESSIBLE.

Acked-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
Signed-off-by: Sumanth Korikkar <sumanthk@xxxxxxxxxxxxx>
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Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>

--
Cheers

David / dhildenb