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Message-ID: <89e25fd7-b323-2092-4151-faba060d4c10@infradead.org>
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
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