Re: [RFC 00/15] x86_64: Optimize percpu accesses

[Christoph Lameter]

Mike Travis wrote:
> H. Peter Anvin wrote:
> ...
>> -- I believe 2 MB mappings are too large, except perhaps as an option.
>>
>>     -hpa
> 
> Hmm, that might be the way to go.... At boot up time determine the
> size of the system in terms of cpu count and memory available and
> attempt to do the right thing, with startup options to override the
> internal choices... ?

Ok. That is an extension of the static per cpu area scenario already supported by cpu_alloc. Should not be too difficult to implement.

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