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Date: Tue, 17 Nov 2015 15:15:06 +0200
From: Boaz Harrosh <boaz@plexistor.com>
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To: Toshi Kani <toshi.kani@hpe.com>,
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Subject: Re: [RFC 1/1] memremap: devm_memremap_pages has wrong nid
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On 11/16/2015 07:19 PM, Toshi Kani wrote:
<>
>> (Ok and we might have a slight problem with an NFIT only Node, where there
>>  is no volatile memory at all)
> 
> The NFIT driver sets it to the closest on-line node (i.e. where regular memory
> resides) in this case.
> 

This is a real problem then. I know it used to be the same with type-12 pmem
and we had real trouble with it on systems performance. Eventually one of your
patches fixed it.

We should fix this for NFIT, yes specially with ZONE_DEVICE and page support.
It will hurt performance a lot.

Eventually I'll get to it, again when NFIT becomes more relevant to us.

<>
> 
> Thanks,
> -Toshi
> 

Thanks Toshi
Boaz