Enabling peer to peer device transactions for PCIe devices

[Sagalovitch, Serguei]

> I don't think we should be using numa distance to reverse engineer a
> certain allocation behavior.  The latency data should be truthful, but
> you're right we'll need a mechanism to keep general purpose
> allocations out of that range by default. 

Just to clarify: Do you propose/thinking to utilize NUMA API for 
such (VRAM) allocations?