From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH 20/31] lmb: Add __NOT_KEEP_LMB to put lmb code to .init
Date: Mon, 29 Mar 2010 12:11:39 -0700 (PDT)
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From: Yinghai Lu <yinghai@kernel.org>
Date: Mon, 29 Mar 2010 11:39:52 -0700

> On 03/29/2010 11:34 AM, David Miller wrote:
>> From: Yinghai Lu <yinghai@kernel.org>
>> Date: Mon, 29 Mar 2010 09:20:28 -0700
>> 
>>> BTW, it seems only PowerPC need to keep lmb after init stage, right ?
>> 
>> For now.  Sparc64 will need it at some point in the future.
> 
> for memory hotplug support?

Yes.