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[2003:cf:574b:cf00:ffb1:5ba9:13f7:9a3b]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4835dd0e327sm519169015e9.14.2026.02.17.07.25.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Feb 2026 07:25:18 -0800 (PST) From: Alexander Mikhalitsyn To: qemu-devel@nongnu.org Cc: Jesper Devantier , Peter Xu , Klaus Jensen , Fabiano Rosas , qemu-block@nongnu.org, Keith Busch , Alexander Mikhalitsyn Subject: [PATCH 0/4] [RFC] hw/nvme: add basic live migration support Date: Tue, 17 Feb 2026 16:25:13 +0100 Message-ID: <20260217152517.271422-1-alexander@mihalicyn.com> X-Mailer: git-send-email 2.47.3 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::32a; 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, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Alexander Mikhalitsyn Dear friends, This patchset adds basic live migration support for QEMU emulated NVMe device. Implementation has some limitations: - only one NVMe namespace is supported - SMART counters are not preserved - CMB is not supported - PMR is not supported - SPDM is not supported - SR-IOV is not supported - AERs are not fully supported I believe this is something I can support in next patchset versions or separately on-demand (when usecase appears). But I wanted to share this first version as RFC to get some feedback on this in case if I'm approaching it wrong. Kind regards, Alex Alexander Mikhalitsyn (4): hw/nvme: add migration blockers for non-supported cases hw/nvme: split nvme_init_sq/nvme_init_cq into helpers migration: add VMSTATE_VARRAY_OF_POINTER_TO_STRUCT_ALLOC hw/nvme: add basic live migration support hw/nvme/ctrl.c | 505 +++++++++++++++++++++++++++++++++--- hw/nvme/nvme.h | 5 + hw/nvme/trace-events | 9 + include/migration/vmstate.h | 21 ++ migration/vmstate-types.c | 88 +++++++ 5 files changed, 598 insertions(+), 30 deletions(-) -- 2.47.3