Re: [PATCH v3 4/7] x86/tlb: add tlb flush all factor for specificCPUs

[H. Peter Anvin]

On 05/08/2012 08:56 AM, Andi Kleen wrote:
> 
>> This seems a bit concerning from a forward compatibility point of view.
>>   It would make more sense to assume that future processors would behave
>> more like the most recent (Sandy Bridge in your case) unless there is
>> evidence to the contrary.
> This would not work on new Atoms, which inter mix model numbers.
> 

That is another problem, but there isn't much we (as the Linux
community) can do about that, so we can just do the optimistic thing...

> In the past I did a hack in other software to check the cache sizes to
> distinguish the two
> for unknown models It's not pretty however.

Ick.

	-hpa

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