Commit fa49066f authored by David Hildenbrand's avatar David Hildenbrand Committed by Heiko Carstens

s390/mm: don't set ARCH_KEEP_MEMBLOCK

Commit 50be6345 ("s390/mm: Convert bootmem to memblock") mentions
	"The original bootmem allocator is getting replaced by memblock. To
	cover the needs of the s390 kdump implementation the physical
	memory list is used."

As we can now reference "physmem" managed in the memblock allocator after
init even without ARCH_KEEP_MEMBLOCK, and s390x does no longer need
other memblock metadata after boot (esp., the zcore memmap device that used
it got removed), we can stop setting ARCH_KEEP_MEMBLOCK.

With this change, we no longer create memblocks for standby/hotplugged
memory (added via add_memory()) and free up memblock metadata (except
physmem) after boot.

Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Philipp Rudo <prudo@linux.ibm.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
Message-Id: <20200701141830.18749-3-david@redhat.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent 77649905
...@@ -102,7 +102,6 @@ config S390 ...@@ -102,7 +102,6 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_BH select ARCH_INLINE_WRITE_UNLOCK_BH
select ARCH_INLINE_WRITE_UNLOCK_IRQ select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
select ARCH_KEEP_MEMBLOCK
select ARCH_STACKWALK select ARCH_STACKWALK
select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_NUMA_BALANCING select ARCH_SUPPORTS_NUMA_BALANCING
......
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