linux-kernel - Re: [PATCH v2 5/5] page_alloc: Bootmem limit with movablecore

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Date:	Mon, 26 Nov 2012 21:31:13 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Wen Congyang <wency@...fujitsu.com>
CC:	Tang Chen <tangchen@...fujitsu.com>,
	wujianguo <wujianguo106@...il.com>, akpm@...ux-foundation.org,
	rob@...dley.net, isimatu.yasuaki@...fujitsu.com,
	laijs@...fujitsu.com, linfeng@...fujitsu.com, jiang.liu@...wei.com,
	yinghai@...nel.org, kosaki.motohiro@...fujitsu.com,
	minchan.kim@...il.com, mgorman@...e.de, rientjes@...gle.com,
	rusty@...tcorp.com.au, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, linux-doc@...r.kernel.org,
	wujianguo@...wei.com, qiuxishi@...wei.com
Subject: Re: [PATCH v2 5/5] page_alloc: Bootmem limit with movablecore_map

On 11/26/2012 07:15 PM, Wen Congyang wrote:
>
> Hi, hpa
>
> The problem is that:
> node1 address rang: [18G, 34G), and the user specifies movable map is [8G, 24G).
> We don't know node1's address range before numa init. So we can't prevent
> allocating boot memory in the range [24G, 34G).
>
> The movable memory should be classified as a non-RAM type in memblock. What
> do you want to say? We don't save type in memblock because we only
> add E820_RAM and E820_RESERVED_KERN to memblock.
>

We either need to keep the type or not add it to the memblocks.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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