linux-kernel - Re: [PATCH v5] Documentation, dt, numa: Add note to empty NUMA node

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Date:   Mon, 28 Jun 2021 09:15:16 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Gavin Shan <gshan@...hat.com>, devicetree@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, drjones@...hat.com,
        robh+dt@...nel.org, shan.gavin@...il.com
Subject: Re: [PATCH v5] Documentation, dt, numa: Add note to empty NUMA node

On 6/28/21 2:34 AM, Gavin Shan wrote:
> The empty memory nodes, where no memory resides in, are allowed.
> For these empty memory nodes, the 'len' of 'reg' property is zero.
> The NUMA node IDs are still valid and parsed, but memory may be
> added to them through hotplug afterwards. I finds difficulty to
> get where it's properly documented.
> 
> So lets add a section for empty memory nodes in NUMA binding
> document. Also, the 'unit-address', equivalent to 'base-address'
> in the 'reg' property of these empty memory nodes is suggested to
> be the summation of highest memory address plus the NUMA node ID.
> 
> Signed-off-by: Gavin Shan <gshan@...hat.com>
> ---
> v5: Separate section for empty memory node
> ---
>  Documentation/devicetree/bindings/numa.txt | 61 +++++++++++++++++++++-
>  1 file changed, 60 insertions(+), 1 deletion(-)
> 

LGTM. Thanks.

Acked-by: Randy Dunlap <rdunlap@...radead.org>

-- 
~Randy