From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yinghai <yinghai.lu@oracle.com>
Subject: Re: [PATCH 07/22] lmb: Add lmb_to_bootmem()
Date: Sun, 09 May 2010 21:31:51 -0700
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To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>, Andrew Morton <akpm@linux-foundation.org>, David Miller <davem@davemloft.net>, Linus Torvalds <torvalds@linux-foundation.org>, Johannes Weiner <hannes@cmpxchg.org>, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org

On 05/09/2010 08:13 PM, Benjamin Herrenschmidt wrote:
> On Sat, 2010-05-08 at 08:17 -0700, Yinghai Lu wrote:
>> lmb_to_bootmem() will reserve lmb.reserved.region in bootmem after bootmem is
>> set up.
>>
>> We can use it to with all arches that support lmb later.
> 
> This is clumsy. Doesn't work with NUMA either. Also,

it works NUMA. for x86 we managed to call that one time from 2.6.34-rc1. (still called early_res_to_bootmem().
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=1842f90cc98625d4d9bf8f8b927f17705ceb4e9c

> reserve_bootmem_generic() only exists on x86 afaik.

previous patch add weak version 
[PATCH 06/22] bootmem, x86: Add weak version of reserve_bootmem_generic

YH