Re: [RFC][PATCH v2 00/21] PMEM NUMA node and hotness accounting/migration

[Jerome Glisse]

On Tue, Jan 08, 2019 at 03:52:56PM +0100, Michal Hocko wrote:
> On Wed 02-01-19 12:21:10, Jonathan Cameron wrote:
> [...]
> > So ideally I'd love this set to head in a direction that helps me tick off
> > at least some of the above usecases and hopefully have some visibility on
> > how to address the others moving forwards,
> 
> Is it sufficient to have such a memory marked as movable (aka only have
> ZONE_MOVABLE)? That should rule out most of the kernel allocations and
> it fits the "balance by migration" concept.

This would not work for GPU, GPU driver really want to be in total
control of their memory yet sometimes they want to migrate some part
of the process to their memory.

Cheers,
Jérôme