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[172.125.78.211]) by smtp.gmail.com with ESMTPSA id 80-20020a811453000000b00545a0818480sm2968877ywu.16.2023.04.10.10.47.02 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 10 Apr 2023 10:47:03 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.400.51.1.1\)) Subject: Re: [External] [LSF/MM/BPF TOPIC] BoF VM live migration over CXL memory From: "Viacheslav A.Dubeyko" In-Reply-To: <20230410030532.427842-1-ks0204.kim@samsung.com> Date: Mon, 10 Apr 2023 10:46:50 -0700 Cc: dragan@stancevic.com, lsf-pc@lists.linux-foundation.org, linux-mm@kvack.org, Linux FS Devel , linux-cxl@vger.kernel.org, Adam Manzanares , Dan Williams , seungjun.ha@samsung.com, wj28.lee@samsung.com Content-Transfer-Encoding: quoted-printable Message-Id: <1DEC12D4-9D85-4AC1-BEE5-92E7E8189C2D@bytedance.com> References: <5d1156eb-02ae-a6cc-54bb-db3df3ca0597@stancevic.com> <20230410030532.427842-1-ks0204.kim@samsung.com> To: Kyungsan Kim X-Mailer: Apple Mail (2.3731.400.51.1.1) X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 995C9A0007 X-Stat-Signature: ozkhcacoofttzpgy879nq6r4h5kgmnq1 X-HE-Tag: 1681148824-716908 X-HE-Meta: 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 Z3ZaePGX nRiK5i2UvWbMCAyfBDCN8FqhWmmokNE8v2ivsXuB/0LIyfBJOFYiRA0X/igzRu+wWGlYAxFtWr26Y1yOcvk6wIKgG72WZCtkunzYdCJmL7BGsbrNlgelL62gfZxfCmSFLEHlLLE2Gxnh+uKdfBNFC0YoiaRRfn95IwB3Oc8VIplEXQpTsW8AOhPoQqNuHwXqJHCoT+V7HAi7AaByvw3++bgRSnapNJyzTm0MJFwybQe9u71ZuZG53cEGynWu/hfq6AvTYt/KBnzW5TEqCBu+TE01/TpdgZz4ynl3EVStqTg0RPguBAXPJr598QWm8UCjz30It8CwblGdVHEfU+riutinoEBLCYz8f7726PED2ML5x325bkffnnLWpt31bEMtOkzGVUYnZE7FFreBgIhZXf9Bh3CXrqc5+WK0aAuIndhCvdEmwKpOhlZw8HCAfYU63BWuMWKncTFNPXhm03u09U1Vj0EsOhqsV5UuBDmRjp0jroVA= 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 Apr 9, 2023, at 8:05 PM, Kyungsan Kim = wrote: >=20 >> Hi folks- >>=20 >> if it's not too late for the schedule... >>=20 >> I am starting to tackle VM live migration and hypervisor clustering = over >> switched CXL memory[1][2], intended for cloud virtualization types of = loads. >>=20 >> I'd be interested in doing a small BoF session with some slides and = get >> into a discussion/brainstorming with other people that deal with = VM/LM >> cloud loads. Among other things to discuss would be page migrations = over >> switched CXL memory, shared in-memory ABI to allow VM hand-off = between >> hypervisors, etc... >>=20 >> A few of us discussed some of this under the ZONE_XMEM thread, but I >> figured it might be better to start a separate thread. >>=20 >> If there is interested, thank you. >=20 > I would like join the discussion as well. > Let me kindly suggest it would be more great if it includes the data = flow of VM/hypervisor as background and kernel interaction expected. >=20 Sounds like interesting topic to me. I would like to attend the = discussion. Thanks, Slava. >>=20 >>=20 >> [1]. High-level overview available at http://nil-migration.org/ >> [2]. Based on CXL spec 3.0 >>=20 >> -- >> Peace can only come as a natural consequence >> of universal enlightenment -Dr. Nikola Tesla