On 05/01/2013 09:54 AM, Andy Lutomirski wrote:
> 
> (Just my luck.  I'm currently trying to implement WT via PAT by
> stealing a slot from either UC or UC-.)
> 

NAK on that.  Use a slot in the upper half, perhaps (we already
blacklist the CPUs for which the upper half aren't usable.)

What do you want WT for, anyway?

> Is there any code that memcpys across memory types and expects any
> particularly sensible behavior out of it?

Unlikely (see my post.)

        -hpa

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