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bh=NxMBFmaYBDitbmp1sO4gaUOd+V6XgSphzGaJlOKkQig=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=VHHLlnmf59g/vXjw7M/rQj5zhZe/8s4jGc/vNh/o1BGK5L/nk/7KvWGJA39yK2m06 2ZmE1Q4dVqbaI++nAOWwLmbOtIqpPCUqCZFaFvGCUIYKFjiGgLXi0wNiLLM6zrcUUm 1KC0LJYWTyxAzUyoIR3Kxo6/XqVWEKOqJ2wJtmmMoIHXKsC65JCBnfUkEcnW9UfNVe o/tm1pPNw4OhgRTjhiWw2lbLZsqAyJGROQ/FCZa8JXJ3ZCtI3WeEEuNEv/MWsQwl9A H9QKNSB2VFEJyecJVOXZQVQM1CGSqUXMsPkZMcCw9m43nbjlz6TOsqezoqEsI00qt6 CTkH2EjRogxLg== Date: Tue, 21 Feb 2023 08:52:25 +0200 From: Mike Rapoport To: Jonathan Corbet Cc: Andrew Morton , Bagas Sanjaya , David Hildenbrand , Johannes Weiner , Lorenzo Stoakes , "Matthew Wilcox (Oracle)" , Mel Gorman , Michal Hocko , Vlastimil Babka , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v3] docs/mm: Physical Memory: add example of interleaving nodes Message-ID: References: <20230213154447.1631847-1-rppt@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230213154447.1631847-1-rppt@kernel.org> X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 7A91FA0009 X-Stat-Signature: rtygrmyypfegfqmnwxr1hizsbx9a8zxt X-HE-Tag: 1676962366-257470 X-HE-Meta: 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 gVP3Ded/ nUoBbolVeHnD7n+QyLmIxvNHFJ7bTEkn7xy8390X0MfPO4fkXItHJMd12pAEONoMvRtUNAVj3ZeMEOGOuI8IWaqJeW9rq/IexWqYbwQLrZ2b0cTZ0+KdhXfBfp9992UDrXk1yjmtaQG9AkvHIkgoMHIPLLYdf2n3auv3cS6buVd2yL81vlgb+gEP3KkeBOcQyifJ9lINSBx4FOGQtCdX6592rycX6310qudfHPxdasMovwbuFqkvjB5X3ZU9jFkxnCRz/9T+NoKU+BvCkQth3hmm+xu7l57d3MlcbTilSz9PNFS4ILu5h68ohzs4nlOiH/Fyv3YWw0jRwojzmZ0VtV5Uzb+FHI/+p8K2SNAp0E2cgtNA= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Ping? On Mon, Feb 13, 2023 at 05:44:47PM +0200, Mike Rapoport wrote: > From: "Mike Rapoport (IBM)" > > Add an example of memory layout with interleaving nodes where even memory > banks belong to node 0 and odd memory banks belong to node 1 > > Suggested-by: Michal Hocko > Signed-off-by: Mike Rapoport (IBM) > --- > > v3: > * Fix typos and wording (Matthew) > > v2: https://lore.kernel.org/all/20230212095445.1311627-1-rppt@kernel.org > * Wording update (Bagas) > * Add forgotten Suggested-by > > v1: https://lore.kernel.org/all/20230211102207.1267058-1-rppt@kernel.org > Documentation/mm/physical_memory.rst | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/Documentation/mm/physical_memory.rst b/Documentation/mm/physical_memory.rst > index 3f3c02aa6e6e..863ddcd0b291 100644 > --- a/Documentation/mm/physical_memory.rst > +++ b/Documentation/mm/physical_memory.rst > @@ -114,6 +114,25 @@ RAM equally split between two nodes, there will be ``ZONE_DMA32``, > | DMA32 | NORMAL | MOVABLE | | NORMAL | MOVABLE | > +---------+----------+-----------+ +------------+-------------+ > > + > +Memory banks may belong to interleaving nodes. In the example below an x86 > +machine has 16 Gbytes of RAM in 4 memory banks, even banks belong to node 0 > +and odd banks belong to node 1:: > + > + > + 0 4G 8G 12G 16G > + +-------------+ +-------------+ +-------------+ +-------------+ > + | node 0 | | node 1 | | node 0 | | node 1 | > + +-------------+ +-------------+ +-------------+ +-------------+ > + > + 0 16M 4G > + +-----+-------+ +-------------+ +-------------+ +-------------+ > + | DMA | DMA32 | | NORMAL | | NORMAL | | NORMAL | > + +-----+-------+ +-------------+ +-------------+ +-------------+ > + > +In this case node 0 will span from 0 to 12 Gbytes and node 1 will span from > +4 to 16 Gbytes. > + > .. _nodes: > > Nodes > > base-commit: e076f253283c3e55a128fa9665c0e6cd8146948d > -- > 2.35.1 > -- Sincerely yours, Mike.