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Date:   Tue, 25 May 2021 20:00:22 +0200
From:   Oscar Salvador <osalvador@suse.de>
To:     "Qian Cai (QUIC)" <quic_qiancai@quicinc.com>
Cc:     David Hildenbrand <david@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Anshuman Khandual <anshuman.khandual@arm.com>,
        Vlastimil Babka <vbabka@suse.cz>,
        Michal Hocko <mhocko@kernel.org>,
        Linux Memory Management List <linux-mm@kvack.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Arm64 crash while online/offline memory sections
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On Tue, May 25, 2021 at 05:57:34PM +0000, Qian Cai (QUIC) wrote:
> > 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/

Ok, which means that is irrelevant to having it enabled, as the latter
patch of that series actualy enables it for arm64.
Can you work out where exactly the crash happens?

I will have a look into it tomorrow.

Thanks for reporting.

-- 
Oscar Salvador
SUSE L3