Re: [PATCH 2/3] x86: Define _PAGE_NUMA with unused physical address bits PMD and PTE levels

From: H. Peter Anvin
Date: Tue Apr 08 2014 - 12:18:58 EST


On 04/08/2014 09:02 AM, Konrad Rzeszutek Wilk wrote:
>>>
>>> Amazon EC2 does have large memory instance types with NUMA exposed to
>>> the guest (e.g. c3.8xlarge, i2.8xlarge, etc), so it'd be preferable
>>> (to me anyway) if we didn't require !XEN.
>
> What about the patch that David Vrabel posted:
>
> http://osdir.com/ml/general/2014-03/msg41979.html
>
> Has anybody taken it for a spin?
>

Oh lovely, more pvops in low level paths. I'm so thrilled.

Incidentally, I wasn't even Cc:'d on that patch and was only added to
the thread by Linus, but never saw the early bits of the thread
including the actual patch.

-hpa

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