linux-kernel - Re: [RFC,2/7] NUMA Hotplug emulator

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Message-ID: <4BECFDE9.2080301@linux.intel.com>
Date:	Fri, 14 May 2010 15:38:17 +0800
From:	Haicheng Li <haicheng.li@...ux.intel.com>
To:	Paul Mundt <lethal@...ux-sh.org>
CC:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Shaohui Zheng <shaohui.zheng@...el.com>,
	akpm@...ux-foundation.org, linux-mm@...ck.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Yinghai Lu <yinghai@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Mel Gorman <mel@....ul.ie>,
	Lee Schermerhorn <lee.schermerhorn@...com>,
	linux-kernel@...r.kernel.org, ak@...ux.intel.co,
	fengguang.wu@...el.com, shaohui.zheng@...ux.intel.com
Subject: Re: [RFC,2/7] NUMA Hotplug emulator

Paul Mundt wrote:
> On Fri, May 14, 2010 at 11:16:15AM +0900, KAMEZAWA Hiroyuki wrote:
>> On Thu, 13 May 2010 19:45:44 +0800
>> Shaohui Zheng <shaohui.zheng@...el.com> wrote:
>>
>>> x86: infrastructure of NUMA hotplug emulation
>>>
>> Hmm. do we have to create this for x86 only ?
>> Can't we live with lmb ? as
>>
>> 	lmb_hide_node() or some.
>>
>> IIUC, x86-version lmb is now under development.
>>
> Indeed. There is very little x86-specific about this patch series at all
> except for the e820 bits and tying in the CPU topology. Most of what this
> series is doing wrapping around e820 could be done on top of LMB, which
> would also make it possible to use on non-x86 architectures.

Hmm, we'll evaluate it. We'd like to make it support non-x86 archs if LMB is a feasible way.
Thank you, Kame and Paul.

-haicheng

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