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[52.52.7.82]) by smtp.gmail.com with ESMTPSA id y4-20020a05620a44c400b007069375e0f4sm14021641qkp.122.2023.01.23.10.26.13 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 23 Jan 2023 10:26:14 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.300.101.1.3\)) Subject: Re: [External] [LSF/MM/BPF BoF] Session for CXL memory From: "Viacheslav A.Dubeyko" In-Reply-To: Date: Mon, 23 Jan 2023 10:26:02 -0800 Cc: lsf-pc@lists.linux-foundation.org, linux-cxl@vger.kernel.org, linux-mm@kvack.org, Dan Williams , Jonathan Cameron , Adam Manzanares , Duen-wen Hsiao , Johannes Weiner Content-Transfer-Encoding: quoted-printable Message-Id: <77970B17-6154-4948-ACBF-84DB4745C591@bytedance.com> References: <38D49DA9-3C57-4951-8CBA-5D2BB0C40D9C@bytedance.com> To: David Rientjes X-Mailer: Apple Mail (2.3731.300.101.1.3) X-Stat-Signature: 1rx7qbez8tte8upy8yqjosratmiw3x9n X-Rspam-User: X-Rspamd-Queue-Id: 3FCA618001C X-Rspamd-Server: rspam06 X-HE-Tag: 1674498375-420755 X-HE-Meta: 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 Dk0FeTu9 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 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: > On Jan 22, 2023, at 9:51 PM, David Rientjes = wrote: >=20 > On Fri, 6 Jan 2023, Viacheslav A.Dubeyko wrote: >=20 >> CC: LSF/MM/BPF mailing list. Sorry, missed the list. >>=20 >>> On Jan 6, 2023, at 11:51 AM, Viacheslav A.Dubeyko = wrote: >>>=20 >>> Hello, >>>=20 >>> I believe CXL memory is hot topic now. I believe we have multiple = topics >>> for discussion. I personally would like to discuss CXL Fabric = Manager >>> and vision of FM architecture implementation. I am going to share = the topic >>> in separate email. I would like to suggest a special session for CXL = memory >>> related topics. >>>=20 >>> How everybody feels about it? >>>=20 >=20 > I think this makes a lot of sense, thanks for suggesting it. >=20 > Should this be a BoF or just a normal topic proposal? I assume that = there=20 > could be several different topics of interest all related to CXL.mem. >=20 My point is to have a dedicated CXL session where we can discuss CXL related topics. And we can have likewise session if several CXL related topics will be suggested. :) > Specifically interesting would be the division of work between the = kernel=20 > and userspace to manage memory placement on systems with locally = attached=20 > CXL. And, further, what APIs userspace would have at its disposal for=20= > explicit optimization of this placement that would exist beyond what = is=20 > available for NUMA. >=20 Yes, I think this could be important discussion. Because, for example, I = am working on figuring out how functionality can be distributed among user-space, = kernel-space, and firmware for the case of Fabric Manager. And I believe it could be a = good topic that I have in mind. > I assume we might also want to chat about CXL 2.0 extensions that = would be=20 > useful, especially for cloud providers. >=20 What CXL 2.0 extensions would be useful for cloud providers from your = point of view? Thanks, Slava.