From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2CDC5C77B6E for ; Mon, 10 Apr 2023 03:05:45 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 62519900006; Sun, 9 Apr 2023 23:05:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5D527900002; Sun, 9 Apr 2023 23:05:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 44EB5900006; Sun, 9 Apr 2023 23:05:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 342E9900002 for ; Sun, 9 Apr 2023 23:05:44 -0400 (EDT) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id EA70980AF6 for ; Mon, 10 Apr 2023 03:05:43 +0000 (UTC) X-FDA: 80663991366.03.95E533D Received: from mailout4.samsung.com (mailout4.samsung.com [203.254.224.34]) by imf23.hostedemail.com (Postfix) with ESMTP id 6EBB3140002 for ; Mon, 10 Apr 2023 03:05:39 +0000 (UTC) Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=samsung.com header.s=mail20170921 header.b=QY28z1y5; spf=pass (imf23.hostedemail.com: domain of ks0204.kim@samsung.com designates 203.254.224.34 as permitted sender) smtp.mailfrom=ks0204.kim@samsung.com; dmarc=pass (policy=none) header.from=samsung.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1681095941; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=SRTeLE9lQ3b/QiJsBXYPDVIGRjiZ1RqLSwa/G+aVphI=; b=hE8Vz2vq7nEVHZi2w9obfmeAkiBgqcdNA7ImHP6P0xrUFGIfuF00qPa37KTko37bF3br/I Qvzk8KTdU+ScHD7CEDmOasdhqqqc7NYz5pPRRU6DhIiFIH88yQ0VlsYwFzOCZMiQKkUKml 1P+ThOFryuwmIpPdcWYlEtp8SfRCGro= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=pass header.d=samsung.com header.s=mail20170921 header.b=QY28z1y5; spf=pass (imf23.hostedemail.com: domain of ks0204.kim@samsung.com designates 203.254.224.34 as permitted sender) smtp.mailfrom=ks0204.kim@samsung.com; dmarc=pass (policy=none) header.from=samsung.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1681095941; a=rsa-sha256; cv=none; b=nQiR5usVOYQpBr1bqxZba9Jpx/nTxp3j21eHdSLDNA55Kl8iGSSQEXlQ/nesY9tU38kmCO 87FK0zo1y3EdikFrDwcCys7vdp9qAPzGJkhkjPqJaaTBrgCm4Hxpy+6l+WgAlmPEak7DV0 vpO297QQmDXuKm03HpsRnkWTOaXP9WQ= Received: from epcas2p4.samsung.com (unknown [182.195.41.56]) by mailout4.samsung.com (KnoxPortal) with ESMTP id 20230410030536epoutp04fac6c7fa7826c1a9b6c0fc5220b50155~Uc9jjlGJu0690906909epoutp047 for ; Mon, 10 Apr 2023 03:05:36 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout4.samsung.com 20230410030536epoutp04fac6c7fa7826c1a9b6c0fc5220b50155~Uc9jjlGJu0690906909epoutp047 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1681095936; bh=SRTeLE9lQ3b/QiJsBXYPDVIGRjiZ1RqLSwa/G+aVphI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QY28z1y5nnvErGsEEOshEXhyonfXsQNp8DcyAE2njfK/489zUHWcfjBuB6TfoV0Tn AndF/8vO9UPAMpeoAxxPFj6zWyf7hejMmHKJiyqQpldLoZSsm7t92/VKMarzqC2Zl+ rfAIQ573pkLD42kQUnDTOdcGvBs7/Tv7oN1tq3/g= Received: from epsnrtp4.localdomain (unknown [182.195.42.165]) by epcas2p1.samsung.com (KnoxPortal) with ESMTP id 20230410030534epcas2p167ef3050097e2507e98f957af3e96d7b~Uc9hhQAue1950019500epcas2p1M; Mon, 10 Apr 2023 03:05:34 +0000 (GMT) Received: from epsmges2p4.samsung.com (unknown [182.195.36.69]) by epsnrtp4.localdomain (Postfix) with ESMTP id 4Pvv3x2lNkz4x9Pv; Mon, 10 Apr 2023 03:05:33 +0000 (GMT) Received: from epcas2p1.samsung.com ( [182.195.41.53]) by epsmges2p4.samsung.com (Symantec Messaging Gateway) with SMTP id A1.87.09650.DFC73346; Mon, 10 Apr 2023 12:05:33 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas2p4.samsung.com (KnoxPortal) with ESMTPA id 20230410030532epcas2p49eae675396bf81658c1a3401796da1d4~Uc9gRgJqf0469904699epcas2p4O; Mon, 10 Apr 2023 03:05:32 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20230410030532epsmtrp2e937a887cd70c1d269f082f6e901f107~Uc9gQwOwZ2512825128epsmtrp2e; Mon, 10 Apr 2023 03:05:32 +0000 (GMT) X-AuditID: b6c32a48-dc7ff700000025b2-34-64337cfd53e7 Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id B6.84.08609.CFC73346; Mon, 10 Apr 2023 12:05:32 +0900 (KST) Received: from dell-Precision-7920-Tower.dsn.sec.samsung.com (unknown [10.229.83.99]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20230410030532epsmtip1b9af32e7980eee83fb3add941a66ca7d~Uc9gC5Wx_0228302283epsmtip1Y; Mon, 10 Apr 2023 03:05:32 +0000 (GMT) From: Kyungsan Kim To: dragan@stancevic.com Cc: lsf-pc@lists.linux-foundation.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-cxl@vger.kernel.org, a.manzanares@samsung.com, viacheslav.dubeyko@bytedance.com, dan.j.williams@intel.com, seungjun.ha@samsung.com, wj28.lee@samsung.com Subject: RE: [LSF/MM/BPF TOPIC] BoF VM live migration over CXL memory Date: Mon, 10 Apr 2023 12:05:32 +0900 Message-Id: <20230410030532.427842-1-ks0204.kim@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <5d1156eb-02ae-a6cc-54bb-db3df3ca0597@stancevic.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrAJsWRmVeSWpSXmKPExsWy7bCmqe7fGuMUg5c3hS2mH1a0mD71AqPF obk32S3OzzrFYrFn70kWi3tr/rNa7Hu9l9niRedxJouODW8YLTbef8fmwOXx78QaNo/Fe14y eWz6NIndY/KN5YwefVtWMXosXmrj8XmTXAB7VLZNRmpiSmqRQmpecn5KZl66rZJ3cLxzvKmZ gaGuoaWFuZJCXmJuqq2Si0+ArltmDtB1SgpliTmlQKGAxOJiJX07m6L80pJUhYz84hJbpdSC lJwC8wK94sTc4tK8dL281BIrQwMDI1OgwoTsjFO/eQqOc1Qs2SbQwPidrYuRk0NCwETie8cB IJuLQ0hgB6PEqmlTGUESQgKfGCU+HwmCSHxmlNi04wQLTMfPB5dYIBK7GCWuTWiFau9ikri+ /S9YFZuAtsSfK+fBdogISEjsW7MIbCyzwD9GiT2XJUFsYQFXif2/1zOD2CwCqhJ981ewg9i8 AjYSk2fthdomLzHz0newOKeAo0T3s89MEDWCEidnPmGBmCkv0bx1NjPIERICrRwS5979YIVo dpGY2PIHapCwxKvjW9ghbCmJz+/2QgOgWOLx639Q8RKJw0t+Q9UbS7y7+RxoDgfQAk2J9bv0 QUwJAWWJI7eg1vJJdBz+yw4R5pXoaBOCaFSR2P5vOTPMotP7N0EN95BoP7CZGRJUUxglbi65 xjSBUWEWkm9mIflmFsLiBYzMqxjFUguKc9NTi40KTODRm5yfu4kRnFS1PHYwzn77Qe8QIxMH 4yFGCQ5mJRFeG26DFCHelMTKqtSi/Pii0pzU4kOMpsCwnsgsJZqcD0zreSXxhiaWBiZmZobm RqYG5krivB87lFOEBNITS1KzU1MLUotg+pg4OKUamLZaXnz16nGv1bMFkf8tpmns3nif5ebk JdHPjHlZ8n21RN8KJ3hrSF945/hMaX709FiOuY9lHn5Z7PJR97WMzM9X/fNWP1zIZyy/6u5h XbGn5W6d709e+9a1xGSJ4NN3qj97LNYm1yr+ESwI3dHWFx4mWm3M/f+3TNGJne8bl81sYz6r VFNgv8nchPdY7LQ9r1T6GzbIqJiZ5vw8afH4a6te1ff8+Wlt0+Pt0k732yTXFk20Sq/S23Yp U7DhDuOEV0/uGymb/at4MacrPmEOa6bUraywPawrLdWOPtXfaTmZ6eaWW+uaA1v79fVy3JWm PIo9c+HJIblpHwJnrl5VuzM/tre7pplzfbj29ZV6nkosxRmJhlrMRcWJAP0ort8zBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrDLMWRmVeSWpSXmKPExsWy7bCSnO6fGuMUg0crtCymH1a0mD71AqPF obk32S3OzzrFYrFn70kWi3tr/rNa7Hu9l9niRedxJouODW8YLTbef8fmwOXx78QaNo/Fe14y eWz6NIndY/KN5YwefVtWMXosXmrj8XmTXAB7FJdNSmpOZllqkb5dAlfGqd88Bcc5KpZsE2hg /M7WxcjJISFgIvHzwSWWLkYuDiGBHYwSO6bfZIRISEm8P93GDmELS9xvOcIKYgsJdDBJHP9Q D2KzCWhL/LlyHmyQiICExL41ixhBBjGD1Gy9PB0sISzgKrH/93pmEJtFQFWib/4KsKG8AjYS k2ftZYFYIC8x89J3sDingKNE97PPTBDLHCSutdxhhqgXlDg58wlYPTNQffPW2cwTGAVmIUnN QpJawMi0ilEytaA4Nz232LDAKC+1XK84Mbe4NC9dLzk/dxMjOAK0tHYw7ln1Qe8QIxMH4yFG CQ5mJRFeG26DFCHelMTKqtSi/Pii0pzU4kOM0hwsSuK8F7pOxgsJpCeWpGanphakFsFkmTg4 pRqYVjDXBD05W//Xaw8z4923USLLJyl1XNp76G2A054twv86LtvNevntXsXPdecZviXc7N2s nC1149KBLjZOtrlr7p6fcHBR0cZlWxTDXUMuC+dlfgkzrpKa1lR4Vnaj1Qd3Yc73eVaeIndn LxEX+fMuei6zeXpXwuIvFjJLfM+Z3zWxLeK6ePvRnfydr+Z7+EmdDEg7fk7Hd5PdqzPBhzW/ zvt57a2i8s3++hq2xuqAm37XSw354nvywtfKVk5+yugvY2nSKPlWZybfzINFX9+4+P3s0Vor KbeeX9d3VeNzgb1GgW8fz9p359/y6cYslkLzLxUZLgsUUT3uEfV1z0qHX9Mv+jrcnWZfcmr/ nq+8qUosxRmJhlrMRcWJACcs5mrvAgAA X-CMS-MailID: 20230410030532epcas2p49eae675396bf81658c1a3401796da1d4 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20230410030532epcas2p49eae675396bf81658c1a3401796da1d4 References: <5d1156eb-02ae-a6cc-54bb-db3df3ca0597@stancevic.com> X-Stat-Signature: 3gq1c6gmpmewhwdwmfn5ioqjftxbebrq X-Rspam-User: X-Rspamd-Queue-Id: 6EBB3140002 X-Rspamd-Server: rspam06 X-HE-Tag: 1681095939-824941 X-HE-Meta: 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 eIt925Hz 1ZBN0HfFkt/6UtDI2KFqbUWh8h46zbNyknHGVki8MmqxODRSeH0yGft+ZuUo+Gi49Kr3ju3qrYWAE93drfMiv827cVU+jGi8Ddhaiir4gvIwdsgo= 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: >Hi folks- > >if it's not too late for the schedule... > >I am starting to tackle VM live migration and hypervisor clustering over >switched CXL memory[1][2], intended for cloud virtualization types of loads. > >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... > >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. > >If there is interested, thank you. 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. > > >[1]. High-level overview available at http://nil-migration.org/ >[2]. Based on CXL spec 3.0 > >-- >Peace can only come as a natural consequence >of universal enlightenment -Dr. Nikola Tesla