linux-kernel - RE: Arm64 crash while online/offline memory sections

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Date:   Tue, 25 May 2021 17:57:34 +0000
From:   "Qian Cai (QUIC)" <quic_qiancai@...cinc.com>
To:     David Hildenbrand <david@...hat.com>,
        Oscar Salvador <osalvador@...e.de>
CC:     Andrew Morton <akpm@...ux-foundation.org>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Michal Hocko <mhocko@...nel.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: RE: Arm64 crash while online/offline memory sections

> Do we know which patch in particular is problematic?

Okay, the winner is "mm,memory_hotplug: Allocate memmap from the added memory range".

https://lore.kernel.org/linux-mm/20210421102701.25051-5-osalvador@suse.de/

That and the rest of the series are the minimal I have to revert to fix the crash.