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Date:   Thu, 12 Sep 2019 16:09:12 +0200
From:   Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To:     Mike Rapoport <rppt@kernel.org>
Cc:     Paul Burton <paul.burton@mips.com>, linux-mips@vger.kernel.org,
        linux-kernel@vger.kernel.org, Mike Rapoport <rppt@linux.ibm.com>
Subject: Re: [PATCH] mips: sgi-ip27: switch from DISCONTIGMEM to SPARSEMEM
Message-ID: <20190912140912.GA13137@alpha.franken.de>
References: <20190905133251.GA3650@rapoport-lnx>
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 <20190906130223.GA17704@rapoport-lnx>
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On Thu, Sep 12, 2019 at 03:55:39PM +0200, Thomas Bogendoerfer wrote:
> - reserved[0xd]	[0x000000035bff8000-0x000000035bffffff], 0x0000000000008000 bytes flags: 0x0
> 
> I have no idea which reservation this is, but it's not from one of the
> node data.

that's sparsemem's mem_section. And 

 free_bootmem_with_active_regions(node, end_pfn);

on the last node will free this reserved memory, when memory
is added node by node. This explains it.

So when resending the patch add my

Tested-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]