{"id":2222253,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2222253/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260411022618.2136588-13-kshk@linux.ibm.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.2/projects/14/?format=json","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":"<20260411022618.2136588-13-kshk@linux.ibm.com>","list_archive_url":null,"date":"2026-04-11T02:26:15","name":"[v2,12/15] s390x/pci: Move max_dma_limit from S390PCIIOMMU to S390PCIBusDevice","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"e5b08ffd1312456ba19e0a6027118d3d893cc0e0","submitter":{"id":90249,"url":"http://patchwork.ozlabs.org/api/1.2/people/90249/?format=json","name":"Konstantin Shkolnyy","email":"kshk@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260411022618.2136588-13-kshk@linux.ibm.com/mbox/","series":[{"id":499525,"url":"http://patchwork.ozlabs.org/api/1.2/series/499525/?format=json","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/patches/2222253/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2222253/checks/","tags":{},"related":[],"headers":{"Return-Path":"","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=HQEpU1L9;\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:in-reply-to:message-id\n :mime-version:references:subject:to; s=pp1; bh=21wAnetksnyEMKaYw\n FAGBSun5+/pbul82YOTNXBd9SY=; b=HQEpU1L9Wl9h05AIolusosfTqSMUCV/FK\n E0gTSfwqu8zlrN9EIO4NWUZiOPnsB/QKmAtfTCSfpgqsULkDiGDvKbLH35BtV1Hi\n M+oqo5EQTo0/iDc0YgaRbhZZ2y0W0fcwWNbwzG0B/PiBvmKuOKJNxTfp7Q84DTyR\n YaVpfJtA5jt1e5N/zN2qv4K3stKVClBuhKSXXilvYu24/jeDyD8c2ePBHuC+djsY\n i1gDdS1Pmd3/Tpv0OV6em1Sv4Gn3QDXnOBOtrORlU0sRBbGzqk38hrTluNHqfzN7\n SZvNgC8b8v+jPLVxEAzGzu8Qr8o50L8Astvogs0kXg0OJ4vlgxmNw==","From":"Konstantin Shkolnyy ","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 ","Subject":"[PATCH v2 12/15] s390x/pci: Move max_dma_limit from S390PCIIOMMU to\n S390PCIBusDevice","Date":"Fri, 10 Apr 2026 21:26:15 -0500","Message-Id":"<20260411022618.2136588-13-kshk@linux.ibm.com>","X-Mailer":"git-send-email 2.34.1","In-Reply-To":"<20260411022618.2136588-1-kshk@linux.ibm.com>","References":"<20260411022618.2136588-1-kshk@linux.ibm.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-TM-AS-GCONF":"00","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDExMDAxNiBTYWx0ZWRfX3UWYckoaRvz/\n TSKlkRFBcOntLWMyHu4YdU967rPLjMspcFMIuSew9c3jR1XbXqKIn4lu/qsWPJI78qAU69WgK1n\n 2r+DerSF7CsfPR+gvwFGBhM/tLbIbQiIrkg7KSsZPf6xWtfBoExDqAY10RJPzc0o7dQpbJT9HFp\n fwcZM+4H3ip4eMw/b/PpnC8jDpDUb9oMA3NuAxGEOJEd9lks+mVqCZvZN0iwXr5oTiPkNb4nDtu\n xQJhObXNMnh/wQqthKdsrkGQDhBVDa89PcXtPEsWLOM7ZZOrkkz0y9tu/TR0OxtqbXxkAhlKMqv\n dtO+TQzaGmLTBrV9czBMQaE0V0lFx5SS1406/67Ez0kTsnElZyedjZ7NI6uGeIdmk3MVwOKpQan\n latY5/JF3Uo3TC44bKGYiG0ee8pCQ2qHRIZrugPaKP/lybgHb+9Qzk5JatTtANJsW+VnrrTXp1q\n luA0d6dn1lo6xHbdXYw==","X-Authority-Analysis":"v=2.4 cv=FsY1OWrq c=1 sm=1 tr=0 ts=69d9b176 cx=c_pps\n a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=YlvBUofuDPas7G3Xl8cA:9","X-Proofpoint-ORIG-GUID":"aKsdnvBEGv7ZiL31RoT_RaADyz8zbGB-","X-Proofpoint-GUID":"aKsdnvBEGv7ZiL31RoT_RaADyz8zbGB-","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 ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"This field is only used when S390PCIBusDevice exists, so it can be moved\nthere to simplify S390PCIIOMMU which purpose is just to store the \"root\"\nAddressSpace.\n\nThis also allows to save/restore this field during migration.\n\nSigned-off-by: Konstantin Shkolnyy \n---\n hw/s390x/s390-pci-vfio.c | 4 ++--\n include/hw/s390x/s390-pci-bus.h | 2 +-\n 2 files changed, 3 insertions(+), 3 deletions(-)","diff":"diff --git a/hw/s390x/s390-pci-vfio.c b/hw/s390x/s390-pci-vfio.c\nindex 7c754b656d..093743f2f0 100644\n--- a/hw/s390x/s390-pci-vfio.c\n+++ b/hw/s390x/s390-pci-vfio.c\n@@ -90,7 +90,7 @@ S390PCIDMACount *s390_pci_start_dma_count(S390pciState *s,\n cnt->users = 1;\n cnt->avail = avail;\n QTAILQ_INSERT_TAIL(&s->zpci_dma_limit, cnt, link);\n- pbdev->iommu->max_dma_limit = avail;\n+ pbdev->max_dma_limit = avail;\n return cnt;\n }\n \n@@ -151,7 +151,7 @@ static void s390_pci_read_base(S390PCIBusDevice *pbdev,\n * to request that the guest free DMA mappings as necessary.\n */\n if (!pbdev->rtr_avail) {\n- vfio_size = pbdev->iommu->max_dma_limit << qemu_target_page_bits();\n+ vfio_size = pbdev->max_dma_limit << qemu_target_page_bits();\n if (vfio_size > 0 && vfio_size < cap->end_dma - cap->start_dma + 1) {\n pbdev->zpci_fn.edma = cap->start_dma + vfio_size - 1;\n }\ndiff --git a/include/hw/s390x/s390-pci-bus.h b/include/hw/s390x/s390-pci-bus.h\nindex 1f5d8d4bd4..e3cbee2695 100644\n--- a/include/hw/s390x/s390-pci-bus.h\n+++ b/include/hw/s390x/s390-pci-bus.h\n@@ -275,7 +275,6 @@ struct S390PCIIOMMU {\n Object parent_obj;\n AddressSpace as;\n MemoryRegion mr;\n- uint64_t max_dma_limit;\n };\n \n typedef struct S390PCIIOMMUTable {\n@@ -352,6 +351,7 @@ struct S390PCIBusDevice {\n uint64_t g_iota;\n uint64_t pba;\n uint64_t pal;\n+ uint64_t max_dma_limit;\n S390PCIDMACount *dma_limit;\n MemoryRegion msix_notify_mr;\n IndAddr *summary_ind;\n","prefixes":["v2","12/15"]}