linux-kernel - Re: [PATCH] mips: sgi-ip27: switch from DISCONTIGMEM to SPARSEMEM

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Message-ID: <20190912140912.GA13137@alpha.franken.de>
Date:   Thu, 12 Sep 2019 16:09:12 +0200
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     Paul Burton <paul.burton@...s.com>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, Mike Rapoport <rppt@...ux.ibm.com>
Subject: Re: [PATCH] mips: sgi-ip27: switch from DISCONTIGMEM to SPARSEMEM

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@...e.de>

Thomas.

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