linux-kernel - [PATCH RFC 0/2] s390/mm: don't set ARCH_KEEP

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Date:   Fri, 17 Apr 2020 17:01:49 +0200
From:   David Hildenbrand <david@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, linux-s390@...r.kernel.org,
        David Hildenbrand <david@...hat.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Kirill Smelkov <kirr@...edi.com>,
        Michael Holzheu <holzheu@...ux.vnet.ibm.com>,
        Philipp Rudo <prudo@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>
Subject: [PATCH RFC 0/2] s390/mm: don't set ARCH_KEEP_MEMBLOCK

Looking into why we still create memblocks for hotplugged memory (via
add_memory()), I discovered that we might not need ARCH_KEEP_MEMBLOCK on
s390x after all.

After [1] we will no longer create memblocks for hotplugged memory in
case of !CONFIG_ARCH_KEEP_MEMBLOCK. With this series, the same will apply
to standby memory on s390x, added via add_memory().

[1] https://lkml.kernel.org/r/20200416104707.20219-1-david@redhat.com

David Hildenbrand (2):
  s390/zcore: traverse resources instead of memblocks
  s390/mm: don't set ARCH_KEEP_MEMBLOCK

 arch/s390/Kconfig         |  1 -
 drivers/s390/char/zcore.c | 61 ++++++++++++++++++++++++++++++---------
 2 files changed, 48 insertions(+), 14 deletions(-)

-- 
2.25.1