linux-kernel - Re: [RFC PATCH v3 0/8] mm,numa: N_PRIVATE node isolation for device-managed memory

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Message-ID: <696571507b075_20718100d4@dwillia2-mobl4.notmuch>
Date: Mon, 12 Jan 2026 14:10:24 -0800
From: <dan.j.williams@...el.com>
To: Balbir Singh <balbirs@...dia.com>, <dan.j.williams@...el.com>, Yury Norov
	<ynorov@...dia.com>, Gregory Price <gourry@...rry.net>
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Subject: Re: [RFC PATCH v3 0/8] mm,numa: N_PRIVATE node isolation for
 device-managed memory

Balbir Singh wrote:
[..]
> > I agree with Gregory the name does not matter as much as the
> > documentation explaining what the name means. I am ok if others do not
> > sign onto the rationale for why not include _MEMORY, but lets capture
> > something that tries to clarify that this is a unique node state that
> > can have "all of the above" memory types relative to the existing
> > _MEMORY states.
> > 
> 
> To me, N_ is a common prefix, we do have N_HIGH_MEMORY, N_NORMAL_MEMORY.
> N_PRIVATE does not tell me if it's CPU or memory related.

True that confusion about whether N_PRIVATE can apply to CPUs is there.
How about split the difference and call this:

    N_MEM_PRIVATE

To make it both distinct from _MEMORY and _HIGH_MEMORY which describe
ZONE limitations and distinct from N_CPU.