Re: [PATCH 3/3] acpi, memory-hotplug: Support getting hotplug infofrom SRAT.

[H. Peter Anvin]

On 01/25/2013 05:12 PM, Andrew Morton wrote:
> On Fri, 25 Jan 2013 17:42:09 +0800
> Tang Chen <tangchen@xxxxxxxxxxxxxx> wrote:
> 
>> NOTE: Using this way will cause NUMA performance down because the whole node
>>       will be set as ZONE_MOVABLE, and kernel cannot use memory on it.
>>       If users don't want to lose NUMA performance, just don't use it.
> 
> I agree with this, but it means that nobody will test any of your new code.
> 
> To get improved testing coverage, can you think of any temporary
> testing-only patch which will cause testers to exercise the
> memory-hotplug changes?
> 

There is another problem: if ALL the nodes in the system support
hotpluggable memory, what happens?

	-hpa

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