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Date: Thu, 16 Apr 2020 12:47:05 +0200 From: David Hildenbrand <david@...hat.com> To: linux-kernel@...r.kernel.org Cc: linux-mm@...ck.org, David Hildenbrand <david@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, Anshuman Khandual <anshuman.khandual@....com>, Baoquan He <bhe@...hat.com>, Michal Hocko <mhocko@...nel.org>, Mike Rapoport <rppt@...ux.ibm.com>, Oscar Salvador <osalvador@...e.de>, Pankaj Gupta <pankaj.gupta.linux@...il.com> Subject: [PATCH RFC 0/2] mm/memory_hotplug: handle memblocks only with CONFIG_ARCH_KEEP_MEMBLOCK While working on some other cleanups I stumbled over the creation/removal of memblocks in hotplug code and wondered why we still need that. Turns out, we only need that handling with CONFIG_ARCH_KEEP_MEMBLOCK - unless I am missing something important (-> RFC). I'll be sending out patches to remove CONFIG_ARCH_KEEP_MEMBLOCK on s390x soonish, after finding a way to test them. Gave it a quick test on x86-64. David Hildenbrand (2): mm/memory_hotplug: no need to init new pgdat with node_start_pfn mm/memory_hotplug: handle memblocks only with CONFIG_ARCH_KEEP_MEMBLOCK mm/Kconfig | 3 +++ mm/memory_hotplug.c | 28 +++++++++++++--------------- 2 files changed, 16 insertions(+), 15 deletions(-) -- 2.25.1
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