Moving physical pages from user space

> For a process executing on a given node, memory attached to that same node will be faster than memory on other nodes, so the placement of memory matters.

But the proposed implementation is trying to

> move pages between memory types without the need for an awareness of which processes are using those pages.

I seriously doubt success will be achieved.

If user-space detects a fast tier is under utilised but does not want to analyse process by process which one would benefit from a relocation, surely an API prompting the kernel to fill the fast tier, looking itself for the processes that would benefit most would be more appropriate ?