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GET /api/patches/2218905/?format=api
{ "id": 2218905, "url": "http://patchwork.ozlabs.org/api/patches/2218905/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260402022921.298818-12-kshk@linux.ibm.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": "<20260402022921.298818-12-kshk@linux.ibm.com>", "list_archive_url": null, "date": "2026-04-02T02:29:17", "name": "[11/15] s390x/pci: Move pal from S390PCIIOMMU to S390PCIBusDevice", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "d9e7dc2e75ef976d58e352568b25c7e302521810", "submitter": { "id": 90249, "url": "http://patchwork.ozlabs.org/api/people/90249/?format=api", "name": "Konstantin Shkolnyy", "email": "kshk@linux.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260402022921.298818-12-kshk@linux.ibm.com/mbox/", "series": [ { "id": 498419, "url": "http://patchwork.ozlabs.org/api/series/498419/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=498419", "date": "2026-04-02T02:29:08", "name": "s390x/pci: Implement migration for emulated devices", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498419/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2218905/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2218905/checks/", "tags": {}, "related": [], "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) 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([172.16.1.74])\n by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 4d6v11r446-1\n (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n Thu, 02 Apr 2026 02:30:00 +0000", "from smtpav06.wdc07v.mail.ibm.com (smtpav06.wdc07v.mail.ibm.com\n [10.39.53.233])\n by smtprelay07.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n 6322Twk824249034\n (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK);\n Thu, 2 Apr 2026 02:29:59 GMT", "from smtpav06.wdc07v.mail.ibm.com (unknown [127.0.0.1])\n by IMSVA (Postfix) with ESMTP id CC8FF580F4;\n Thu, 2 Apr 2026 02:29:58 +0000 (GMT)", "from smtpav06.wdc07v.mail.ibm.com (unknown [127.0.0.1])\n by IMSVA (Postfix) with ESMTP id 44A6E580F6;\n Thu, 2 Apr 2026 02:29:58 +0000 (GMT)", "from WIN-DU0DFC9G5VV.ibm.com (unknown [9.61.247.119])\n by smtpav06.wdc07v.mail.ibm.com (Postfix) with ESMTP;\n Thu, 2 Apr 2026 02:29:58 +0000 (GMT)" ], "DKIM-Signature": "v=1; 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=NrGCf/8bYetSxN9UU\n Picau0uFbfmC6ccfpRPRtmpOxo=; b=GbYaDdUkBYoN5XagJz7cIPrnuFgI67r0f\n s+cTwxkHQ6VjgNwtkNE+hK5vVPvx/WHWDzpiuTqshaKbUAP4Os13jgK6ouuOFqq5\n d//Z78/jqrIjUdXu8V/eCH9cZJ1ta+rJAYEG7AkGFgNRcn6lC5SNr5nhg1J9cEMA\n wwBgIoH1iOGL56q5mnFdcX9CGQqdigxg2goLwQivCtZozKquZ7Ib2flzdTv9z0gE\n ZVLPuaQ1QMhs332gnGtWGkJkASQlRqcUPbzwbumiOoY1IhQmBbVGf/NjGh5X7ijI\n uoYHKkJl1UARb/JIs5KmRDOtCyYHkrxk9O82KI0LAsDuK1sj4VE1Q==", "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 11/15] s390x/pci: Move pal from S390PCIIOMMU to\n S390PCIBusDevice", "Date": "Wed, 1 Apr 2026 21:29:17 -0500", "Message-Id": "<20260402022921.298818-12-kshk@linux.ibm.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20260402022921.298818-1-kshk@linux.ibm.com>", "References": "<20260402022921.298818-1-kshk@linux.ibm.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-TM-AS-GCONF": "00", "X-Authority-Analysis": "v=2.4 cv=J6enLQnS c=1 sm=1 tr=0 ts=69cdd4a9 cx=c_pps\n a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=WfwOUNX5pORHP_P-vIkA:9", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNDAyMDAxOSBTYWx0ZWRfX5kkaFzfftqwR\n 3BFjAi7Dl2J3sF3GvaMNbjaKa/0D4pRaW7pF4KlP6mkNLhjy5n8oIkKO6Fs+C5Qas/PBAVot0bH\n AOK2Q6Ns0L2lb0i5uDMrFGBHI3V/k8bgPyqfxRLQM2Zkl32vdax1CnJwjrWot3EARLkYP72YdcQ\n i6l+a/srYJpr7Utwydy7yD6Gyx5ATLqgGyb7oF0mKsVmycLiFdJv8NiJwhz+RTMWb5h/caEPYM2\n wDa7xTFg1yfTId1kBnljIaWfj3oGAF7TroHqyOfmc20RwlBnf18E2wpL+X7jF+d+FHwfq2lJfGM\n 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"-6", "X-Spam_score": "-0.7", "X-Spam_bar": "/", "X-Spam_report": "(-0.7 / 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=-0.01, RCVD_IN_MSPIKE_WL=-0.01,\n RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=1, RCVD_IN_VALIDITY_RPBL_BLOCKED=1,\n SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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": "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 <kshk@linux.ibm.com>\n---\n hw/s390x/s390-pci-bus.c | 8 +++-----\n hw/s390x/s390-pci-inst.c | 12 ++++--------\n include/hw/s390x/s390-pci-bus.h | 2 +-\n 3 files changed, 8 insertions(+), 14 deletions(-)", "diff": "diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c\nindex 734af3a307..f339a0fd94 100644\n--- a/hw/s390x/s390-pci-bus.c\n+++ b/hw/s390x/s390-pci-bus.c\n@@ -539,7 +539,6 @@ static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr,\n IOMMUAccessFlags flag, int iommu_idx)\n {\n S390PCIBusDevice *pbdev = container_of(mr, S390PCIBusDevice, iommu_mr);\n- S390PCIIOMMU *iommu = pbdev->iommu;\n S390IOTLBEntry *entry;\n uint64_t iova = addr & TARGET_PAGE_MASK;\n uint16_t error = 0;\n@@ -564,7 +563,7 @@ static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr,\n \n trace_s390_pci_iommu_xlate(addr);\n \n- if (addr < pbdev->pba || addr > iommu->pal) {\n+ if (addr < pbdev->pba || addr > pbdev->pal) {\n error = ERR_EVENT_OORANGE;\n goto err;\n }\n@@ -599,10 +598,9 @@ static void s390_pci_ioat_replay(S390PCIBusDevice *pbdev)\n uint16_t error = 0;\n uint32_t dma_avail;\n hwaddr curr, end;\n- S390PCIIOMMU *iommu = pbdev->iommu;\n \n curr = pbdev->pba;\n- end = iommu->pal;\n+ end = pbdev->pal;\n \n if (pbdev->dm_mr) {\n /* If direct mapping is used, there are no guest tables to replay */\n@@ -770,7 +768,7 @@ void s390_pci_iommu_enable(S390PCIBusDevice *pbdev)\n char *name = g_strdup_printf(\"iommu-s390-%04x\", pbdev->uid);\n memory_region_init_iommu(&pbdev->iommu_mr, sizeof(pbdev->iommu_mr),\n TYPE_S390_IOMMU_MEMORY_REGION, OBJECT(&iommu->mr),\n- name, iommu->pal + 1);\n+ name, pbdev->pal + 1);\n pbdev->iommu_enabled = true;\n memory_region_add_subregion(&iommu->mr, 0, MEMORY_REGION(&pbdev->iommu_mr));\n g_free(name);\ndiff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c\nindex 7680d87080..191f549ba7 100644\n--- a/hw/s390x/s390-pci-inst.c\n+++ b/hw/s390x/s390-pci-inst.c\n@@ -700,7 +700,6 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)\n uint32_t fh;\n uint16_t error = 0;\n S390PCIBusDevice *pbdev;\n- S390PCIIOMMU *iommu;\n S390IOTLBEntry entry;\n hwaddr start, end, sstart;\n uint32_t dma_avail;\n@@ -742,7 +741,6 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)\n break;\n }\n \n- iommu = pbdev->iommu;\n if (pbdev->dma_limit) {\n dma_avail = pbdev->dma_limit->avail;\n } else {\n@@ -753,7 +751,7 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)\n goto err;\n }\n \n- if (end < pbdev->pba || start > iommu->pal) {\n+ if (end < pbdev->pba || start > pbdev->pal) {\n error = ERR_EVENT_OORANGE;\n goto err;\n }\n@@ -1001,7 +999,6 @@ bool s390_pci_is_translation_enabled(uint64_t g_iota)\n static int reg_ioat(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib,\n uintptr_t ra)\n {\n- S390PCIIOMMU *iommu = pbdev->iommu;\n uint64_t pba = ldq_be_p(&fib.pba);\n uint64_t pal = ldq_be_p(&fib.pal);\n uint64_t g_iota = ldq_be_p(&fib.iota);\n@@ -1027,7 +1024,7 @@ static int reg_ioat(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib,\n }\n \n pbdev->pba = pba;\n- iommu->pal = pal;\n+ pbdev->pal = pal;\n pbdev->g_iota = g_iota;\n \n if (t) {\n@@ -1041,10 +1038,9 @@ static int reg_ioat(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib,\n \n void pci_dereg_ioat(S390PCIBusDevice *pbdev)\n {\n- S390PCIIOMMU *iommu = pbdev->iommu;\n s390_pci_iommu_disable(pbdev);\n pbdev->pba = 0;\n- iommu->pal = 0;\n+ pbdev->pal = 0;\n pbdev->g_iota = 0;\n }\n \n@@ -1417,7 +1413,7 @@ int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,\n }\n \n stq_be_p(&fib.pba, pbdev->pba);\n- stq_be_p(&fib.pal, pbdev->iommu->pal);\n+ stq_be_p(&fib.pal, pbdev->pal);\n stq_be_p(&fib.iota, pbdev->g_iota);\n stq_be_p(&fib.aibv, pbdev->routes.adapter.ind_addr);\n stq_be_p(&fib.aisb, pbdev->routes.adapter.summary_addr);\ndiff --git a/include/hw/s390x/s390-pci-bus.h b/include/hw/s390x/s390-pci-bus.h\nindex 42f39a5cf0..1f5d8d4bd4 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 pal;\n uint64_t max_dma_limit;\n };\n \n@@ -352,6 +351,7 @@ struct S390PCIBusDevice {\n GHashTable *iotlb;\n uint64_t g_iota;\n uint64_t pba;\n+ uint64_t pal;\n S390PCIDMACount *dma_limit;\n MemoryRegion msix_notify_mr;\n IndAddr *summary_ind;\n", "prefixes": [ "11/15" ] }