From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1751529Ab0EJEeV (ORCPT <rfc822;w@1wt.eu>);
	Mon, 10 May 2010 00:34:21 -0400
Received: from rcsinet10.oracle.com ([148.87.113.121]:27247 "EHLO
	rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1750890Ab0EJEeT (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Mon, 10 May 2010 00:34:19 -0400
Message-ID: <4BE78C37.5080103@oracle.com>
Date: Sun, 09 May 2010 21:31:51 -0700
From: Yinghai <yinghai.lu@oracle.com>
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100317 SUSE/3.0.4-1.1.1 Thunderbird/3.0.4
MIME-Version: 1.0
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
Subject: Re: [PATCH 07/22] lmb: Add lmb_to_bootmem()
References: <1273331860-14325-1-git-send-email-yinghai@kernel.org>	 <1273331860-14325-8-git-send-email-yinghai@kernel.org> <1273461193.23699.9.camel@pasglop>
In-Reply-To: <1273461193.23699.9.camel@pasglop>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
X-Auth-Type: Internal IP
X-Source-IP: acsinet15.oracle.com [141.146.126.227]
X-CT-RefId: str=0001.0A090201.4BE78C89.0065:SCFMA922111,ss=1,fgs=0
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@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