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{ "id": 2197259, "url": "http://patchwork.ozlabs.org/api/covers/2197259/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260217152517.271422-1-alexander@mihalicyn.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260217152517.271422-1-alexander@mihalicyn.com>", "list_archive_url": null, "date": "2026-02-17T15:25:13", "name": "[0/4,RFC] hw/nvme: add basic live migration support", "submitter": { "id": 81630, "url": "http://patchwork.ozlabs.org/api/people/81630/?format=api", "name": "Alexander Mikhalitsyn", "email": "alexander@mihalicyn.com" }, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260217152517.271422-1-alexander@mihalicyn.com/mbox/", "series": [ { "id": 492445, "url": "http://patchwork.ozlabs.org/api/series/492445/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=492445", "date": "2026-02-17T15:25:13", "name": "hw/nvme: add basic live migration support", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/492445/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2197259/comments/", "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n secure) header.d=mihalicyn.com header.i=@mihalicyn.com header.a=rsa-sha256\n header.s=mihalicyn header.b=N4hhvyt8;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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charset=\"utf-8\"", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2a00:1450:4864:20::32a;\n envelope-from=alexander@mihalicyn.com; helo=mail-wm1-x32a.google.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no", "X-Spam_action": "no action", "X-Mailman-Approved-At": "Tue, 17 Feb 2026 10:51:21 -0500", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "From: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@futurfusion.io>\n\nDear friends,\n\nThis patchset adds basic live migration support for\nQEMU emulated NVMe device.\n\nImplementation has some limitations:\n- only one NVMe namespace is supported\n- SMART counters are not preserved\n- CMB is not supported\n- PMR is not supported\n- SPDM is not supported\n- SR-IOV is not supported\n- AERs are not fully supported\n\nI believe this is something I can support in next patchset versions or\nseparately on-demand (when usecase appears). But I wanted to share this\nfirst version as RFC to get some feedback on this in case if I'm approaching\nit wrong.\n\nKind regards,\nAlex\n\nAlexander Mikhalitsyn (4):\n hw/nvme: add migration blockers for non-supported cases\n hw/nvme: split nvme_init_sq/nvme_init_cq into helpers\n migration: add VMSTATE_VARRAY_OF_POINTER_TO_STRUCT_ALLOC\n hw/nvme: add basic live migration support\n\n hw/nvme/ctrl.c | 505 +++++++++++++++++++++++++++++++++---\n hw/nvme/nvme.h | 5 +\n hw/nvme/trace-events | 9 +\n include/migration/vmstate.h | 21 ++\n migration/vmstate-types.c | 88 +++++++\n 5 files changed, 598 insertions(+), 30 deletions(-)" }