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Date: Mon, 11 May 2009 21:27:32 -0400 (EDT)
From: Christoph Lameter <cl@linux-foundation.org>
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To: Yinghai Lu <yinghai@kernel.org>
cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
       "H. Peter Anvin" <hpa@zytor.com>,
       Andrew Morton <akpm@linux-foundation.org>,
       Suresh Siddha <suresh.b.siddha@intel.com>,
       "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
       Al Viro <viro@zeniv.linux.org.uk>,
       Rusty Russell <rusty@rustcorp.com.au>,
       Pekka Enberg <penberg@cs.helsinki.fi>
Subject: Re: [PATCH 2/3] x86: add numa_move_cpus_to_node
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On Fri, 8 May 2009, Yinghai Lu wrote:

> when node only have hot add range and don't have other static range.
> that node will not be onlined, and cpus on that will be linked to nearby
> node with memory.
> then when that host add range is added later, we need to linked those cpus
> back.

This going to be fun for the allocators that have put their queues on the
respective nodes. How are the various OS structures that were allocated on
the node that is downed / upped relocated?