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{ "id": 2222260, "url": "http://patchwork.ozlabs.org/api/1.1/covers/2222260/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260411022618.2136588-1-kshk@linux.ibm.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/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": "" }, "msgid": "<20260411022618.2136588-1-kshk@linux.ibm.com>", "date": "2026-04-11T02:26:03", "name": "[v2,00/15] s390x/pci: Implement migration for emulated devices", "submitter": { "id": 90249, "url": "http://patchwork.ozlabs.org/api/1.1/people/90249/?format=api", "name": "Konstantin Shkolnyy", "email": "kshk@linux.ibm.com" }, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260411022618.2136588-1-kshk@linux.ibm.com/mbox/", "series": [ { "id": 499525, "url": "http://patchwork.ozlabs.org/api/1.1/series/499525/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499525", "date": "2026-04-11T02:26:13", "name": "s390x/pci: Implement migration for emulated devices", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/499525/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2222260/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 (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=Y0r4btxh;\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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a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n :content-transfer-encoding:date:from:message-id:mime-version\n :subject:to; s=pp1; bh=5dGHeUZdYw4AwVziYjzw5fzJrURxo/6YCMzIafKFG\n GQ=; b=Y0r4btxhuFSgx9FVowecRY2z3ZZEE6yHjlL8pP/0u2njJCcb07VxEWC6y\n 6tdedrlxSi0Dnp4d0C7q72zR3sdyIHH2mwZHWQDoAv9/uWIGs8FHGXvHLDF8zXa4\n 4AnrkVHrxkHYbREWiTLiRG0OUjrBbDMCPphDUxBnImiQsMqgxm7Mlq8g8SGl9Kua\n H96mFNYCWkge54cygRkP5xdrIDjsu8WI9iacYOw62EY9Z3uqhJ25J2UbrL7rtRCy\n 1XFGxIQSN35N9J9HlLkguH4r6YR5tKM2ly2ykvJwLlNFGFUq4vp1b8cuLpNbSaR2\n qazULCp7jXRiyfz3ItUwK8SiDO4gw==", "From": "Konstantin Shkolnyy <kshk@linux.ibm.com>", "To": "mjrosato@linux.ibm.com", "Cc": "alifm@linux.ibm.com, richard.henderson@linaro.org, iii@linux.ibm.com,\n david@kernel.org, cohuck@redhat.com, pasic@linux.ibm.com,\n borntraeger@linux.ibm.com, qemu-s390x@nongnu.org,\n qemu-devel@nongnu.org, Konstantin Shkolnyy <kshk@linux.ibm.com>", "Subject": "[PATCH v2 00/15] s390x/pci: Implement migration for emulated devices", "Date": "Fri, 10 Apr 2026 21:26:03 -0500", "Message-Id": "<20260411022618.2136588-1-kshk@linux.ibm.com>", "X-Mailer": "git-send-email 2.34.1", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-TM-AS-GCONF": "00", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDExMDAxNiBTYWx0ZWRfX7RjsZli60dBE\n JQd45UnQriZ/Hq45wAzKIeydnyh9JlYDbnm3R7fB+pYPQyI1kazQVR9czCUEIylifzJ+9Pf30fC\n +ZazqxG/jwxpJG7JF8qnZO4q+s6eaEqzkoe6Uy7S51jMd+AWHCn6xJcBdSO/2y93oJzN/SGaI1F\n XQR8eO3uaFc6ALDwRCBX17lTexo81r06yq5hJiLFzkKMvYKA8i7k7yIUt8+0ZLkAfQkAWYU9JIh\n aCTVXlz4AKdy/a50tPHnO9TMbrak4NwVXMkhL7aZ9eavn1XP72/o59yVAFJ3on5fDVazUv5M9Wv\n pGsecceqCwfxCz20/nUlMtT4PHKvU7G0nDp1eyzZDXyCJJ3V5kPKIeB8T9PN4nICVC+9h/4u15C\n /4ZvWOiecHhTb422+V6AykpHkWuB4id9J5JVuHUe9rcz1dS90zlVdFL9aRtBEKBny8nETF8AW2z\n UkT0UMA0amYKxqB5o4A==", "X-Authority-Analysis": "v=2.4 cv=FsY1OWrq c=1 sm=1 tr=0 ts=69d9b16d cx=c_pps\n a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=U7nrCbtTmkRpXpFmAIza:22 a=VwQbUJbxAAAA:8 a=20KFwNOVAAAA:8\n a=8Hgc_-vnOkY6PsbUFoQA:9", "X-Proofpoint-ORIG-GUID": "lV4LbyvLhp-Kc_tY8qx8ZjQd3k07K3kP", "X-Proofpoint-GUID": "lV4LbyvLhp-Kc_tY8qx8ZjQd3k07K3kP", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-10_07,2026-04-09_02,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n bulkscore=0 priorityscore=1501 impostorscore=0 spamscore=0 phishscore=0\n lowpriorityscore=0 clxscore=1015 adultscore=0 malwarescore=0 suspectscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604110016", "Received-SPF": "pass client-ip=148.163.156.1; envelope-from=kshk@linux.ibm.com;\n helo=mx0a-001b2d01.pphosted.com", "X-Spam_score_int": "-26", "X-Spam_score": "-2.7", "X-Spam_bar": "--", "X-Spam_report": "(-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7,\n RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "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": "Up until now QEMU marked any zPCI device as \"unmigratable.\"\n\nThis patch series adds support for migrating emulated devices, which are\nsimpler to migrate. It leaves VFIO devices still unmigratable.\n\nTo enable migration, the device state needs to be saved/restored to/from\nthe migration stream.\n\nThere are 2 kinds of emulated devices - those that use the zPCI IOMMU page\ntable emulation in QEMU (e.g., Intel IGB NIC), and those that don't (virtio).\nThis is important to note for testing purposes.\n\nThis change was tested on IGB, virtio-net and virtio-blk devices by running\nI/O on them while performing \"virsh managedsave, virsh start\" and also live migration to another host and back.\n\nChanges in v2:\n - Block migration for machine versions 11.0 and earlier.\n Because the current version is still 11.0, migration will start working when\n QEMU gets moved to 11.1 by the following patch:\n https://lore.kernel.org/qemu-devel/20260331140347.653404-1-cohuck@redhat.com/\n\nKonstantin Shkolnyy (14):\n s390x/pci: Create function to contain translation status check\n s390x/pci: Move iommu_mr from S390PCIIOMMU to S390PCIBusDevice\n s390x/pci: Move dm_mr from S390PCIIOMMU to S390PCIBusDevice\n s390x/pci: Move iotlb from S390PCIIOMMU to S390PCIBusDevice\n s390x/pci: Remove a ptr to S390PCIBusDevice from S390PCIIOMMU\n s390x/pci: Move/rename enabled from S390PCIIOMMU to S390PCIBusDevice\n s390x/pci: Move dma_limit from S390PCIIOMMU to S390PCIBusDevice\n s390x/pci: Move g_iota from S390PCIIOMMU to S390PCIBusDevice\n s390x/pci: Move pba from S390PCIIOMMU to S390PCIBusDevice\n s390x/pci: Move pal from S390PCIIOMMU to S390PCIBusDevice\n s390x/pci: Move max_dma_limit from S390PCIIOMMU to S390PCIBusDevice\n s390x/pci: Add a comment explaining S390PCIIOMMU purpose\n s390x/pci: Implement migration for emulated devices\n s390x/pci: Create function to contain fmb_timer start\n\nMatthew Rosato (1):\n s390x/pci: implement IOMMU replay\n\n hw/s390x/s390-pci-bus.c | 278 +++++++++++++++++++++++++------\n hw/s390x/s390-pci-inst.c | 116 +++++++------\n hw/s390x/s390-pci-vfio.c | 4 +-\n hw/s390x/s390-virtio-ccw.c | 5 +\n include/hw/s390x/s390-pci-bus.h | 39 +++--\n include/hw/s390x/s390-pci-inst.h | 3 +-\n 6 files changed, 320 insertions(+), 125 deletions(-)" }