Re: [PATCH v3 0/3] create sysfs representation of ACPI HMAT

[Dave Hansen]

On 12/21/2017 07:09 PM, Anshuman Khandual wrote:
> I had presented a proposal for NUMA redesign in the Plumbers Conference this
> year where various memory devices with different kind of memory attributes
> can be represented in the kernel and be used explicitly from the user space.
> Here is the link to the proposal if you feel interested. The proposal is
> very intrusive and also I dont have a RFC for it yet for discussion here.

I think that's the best reason to "re-use NUMA" for this: it's _not_
intrusive.

Also, from an x86 perspective, these HMAT systems *will* be out there.
Old versions of Linux *will* see different types of memory as separate
NUMA nodes.  So, if we are going to do something different, it's going
to be interesting to un-teach those systems about using the NUMA APIs
for this.  That ship has sailed.