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{ "id": 2225182, "url": "http://patchwork.ozlabs.org/api/1.1/covers/2225182/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260420144759.2970726-1-jhkim@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": "<20260420144759.2970726-1-jhkim@linux.ibm.com>", "date": "2026-04-20T14:47:33", "name": "[v2,0/1] hw/s390x/ccw: Disable legacy mode", "submitter": { "id": 91012, "url": "http://patchwork.ozlabs.org/api/1.1/people/91012/?format=api", "name": "Jaehoon Kim", "email": "jhkim@linux.ibm.com" }, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260420144759.2970726-1-jhkim@linux.ibm.com/mbox/", "series": [ { "id": 500615, "url": "http://patchwork.ozlabs.org/api/1.1/series/500615/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=500615", "date": "2026-04-20T14:47:33", "name": "hw/s390x/ccw: Disable legacy mode", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/500615/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2225182/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=lpo4OnVE;\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=ggx50fiGqUmzJjEb461wAkP8w3ZYmH8lu7WYf9RqO\n 0E=; b=lpo4OnVEt6eZImSxfVj7k9RcFrFLODGEjG0bJMumZiVQ5NdsTKCQ119Cu\n /aEWK63Idi0niZHIQRQXP7JdtPUykiQAC0kKGOSWNUqRfo23CgVUXPgMY4Tgbiy/\n 6lFR7Iikv4L805r3vpqvh3VYYMik5mpq8G+fviFKjgPS3QhMUPc40YoQzuvU7c4G\n MFseIYM04EakEm3vecDq95U4zAyBnqyxHhIMF6NcGnww8eeT8omtlPCLdniUx9Ca\n GbJXWr1Mi7DYHsUBA6mWToxZbvOE/adV4HQp8VEACCGK3YHHBRKU7xZQUSJqSpbd\n vIIoAfFj+ZdNhkVWSPolVygSrWKCg==", "From": "Jaehoon Kim <jhkim@linux.ibm.com>", "To": "qemu-devel@nongnu.org, qemu-s390x@nongnu.org", "Cc": "richard.henderson@linaro.org, iii@linux.ibm.com, david@kernel.org,\n pasic@linux.ibm.com, borntraeger@linux.ibm.com, farman@linux.ibm.com,\n mjrosato@linux.ibm.com, cohuck@redhat.com,\n Jaehoon Kim <jhkim@linux.ibm.com>", "Subject": "[PATCH v2 0/1] hw/s390x/ccw: Disable legacy mode", "Date": "Mon, 20 Apr 2026 09:47:33 -0500", "Message-ID": "<20260420144759.2970726-1-jhkim@linux.ibm.com>", "X-Mailer": "git-send-email 2.43.0", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-TM-AS-GCONF": "00", "X-Proofpoint-ORIG-GUID": "gcNQnf-4cNApVLlKItks8yaBVd_zOqtk", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDIwMDE0NCBTYWx0ZWRfX5yUWSwzda8ZG\n t6o0yJnxqEtqFf40B6Z8ZBtuf5dKM7k2ucFzPsR6Inaq+O2EvkdVRdNw5zueQs75jL0Mw8/m3Cz\n j/sql+XuDPp9iiAyaFVCxwyKF/o5WO/qhli1umuI7hEgODQ1pSUVVN4YMl2jD17UtrhTDbF0goh\n CeV3j4PAgd9Ubah0d6ZZ6jLoGLrKLRvjT3xaHhUde+r01KJ3LvUQqmE53XPkPopNCFxpYFmewR5\n IH5zQsJBXwO6w3vvGZ3joXHifWHbX0xArEPCQO/0Toj9cn/OrqjiI47HB/wBh8iVCMUm9OLWeny\n pKLWgdbd3bn6YCDZCdwRGNf4t0JW7KkpoDkzs2cMrnqtRlLkXy108CiCWM47b3v1nbH9T3ISo9R\n Npddof22cqIOR0yMHiXr7fMRtpT7OCBS7IGpNYot7wiv0hSzJihSk/MnT+fUzP+SBgwb60kCajp\n xzmsX0oi1iuiuKpC3YA==", "X-Proofpoint-GUID": "gcNQnf-4cNApVLlKItks8yaBVd_zOqtk", "X-Authority-Analysis": "v=2.4 cv=B7iJFutM c=1 sm=1 tr=0 ts=69e63ca4 cx=c_pps\n a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=iQ6ETzBq9ecOQQE5vZCe:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8\n a=Tlqw0IQ_KjvEc9IBcG4A:9", "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=2026-04-20_03,2026-04-17_04,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n malwarescore=0 priorityscore=1501 spamscore=0 impostorscore=0 adultscore=0\n bulkscore=0 phishscore=0 suspectscore=0 lowpriorityscore=0 clxscore=1015\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2604070000 definitions=main-2604200144", "Received-SPF": "pass client-ip=148.163.156.1; envelope-from=jhkim@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, SPF_HELO_NONE=0.001,\n 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": "Hello,\n\nThis is v2 of the patch.\n\nChanges in v2:\n- Drop RFC tag as the approach has been reviewed and agreed in principle.\n- Improve comments to clarify why legacy virtio-pci is not usable on s390x\n due to lack of I/O BAR support (IO_SPACE_LIMIT is 0).\n\nNo functional changes.\n\nRFC v1:\nhttps://lore.kernel.org/qemu-devel/20260417154332.849664-1-jhkim@linux.ibm.com/\n\nThanks,\nJaehoon Kim.\n\nJaehoon Kim (1):\n hw/s390x/ccw: Disable legacy virtio-pci by default (v11.1+)\n\n hw/s390x/s390-virtio-ccw.c | 26 ++++++++++++++++++++++++++\n 1 file changed, 26 insertions(+)" }