From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 912F5C98302 for ; Tue, 22 Sep 2026 18:40:02 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1x95ND-0007hH-V2; Tue, 22 Sep 2026 14:37:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1x95Mn-0007am-PX; Tue, 22 Sep 2026 14:37:27 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1x95Mg-0005vp-77; Tue, 22 Sep 2026 14:37:21 -0400 Received: from pps.filterd (m0353725.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 68MI7F1g4143872; Tue, 22 Sep 2026 18:37:01 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=pltYl5lwWV7V/bm42 aAWVKyb7sYVZXFX0MS9y26rjI0=; b=EkrnayYJzFp5krpj5oeD5EVTerpccAkSw nHeClhWeYQaYvSPBvf3uubZPa+DnBJtQMHhdpFPbAInQDBBVCOwmk1IfHBOS57Tw NWLpFWkS7tc1bVYMi3qBlr4Jcs+gRdam0eBLXFvYWjd5qfd0dYQlRY4M0rvNFf2F K1Zb7JWF5pNmqK9sKkhJoPwSFC3pobkN6+G7Aben9jF9bpLfeOpGiiG6Thy9Fekm G2yORE/y3j8z29XGkwbrjtvXdm/X8FKU84Mw7GB3M8iGuNB7gLWu4j2BCupe7+ai ubz3GxIGqHX/NdsgViKPB/jPmZGDl+ME6hOx3Rj69AxDlibMJ4U5A== Received: from ppma21.wdc07v.mail.ibm.com (5b.69.3da9.ip4.static.sl-reverse.com [169.61.105.91]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4gskgqf1mu-1 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Tue, 22 Sep 2026 18:37:00 +0000 (GMT) Received: from pps.filterd (ppma21.wdc07v.mail.ibm.com [127.0.0.1]) by ppma21.wdc07v.mail.ibm.com (8.18.1.11/8.18.1.11) with ESMTP id 68MIHWsI3198560; Tue, 22 Sep 2026 18:37:00 GMT Received: from smtprelay06.wdc07v.mail.ibm.com ([172.16.1.73]) by ppma21.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4gt5qju12t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 22 Sep 2026 18:37:00 +0000 (GMT) Received: from smtpav05.dal12v.mail.ibm.com (smtpav05.dal12v.mail.ibm.com [10.241.53.104]) by smtprelay06.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 68MIaw9m57803060 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 22 Sep 2026 18:36:59 GMT Received: from smtpav05.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CB58158068; Tue, 22 Sep 2026 18:36:58 +0000 (GMT) Received: from smtpav05.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A0B0A58069; Tue, 22 Sep 2026 18:36:58 +0000 (GMT) Received: from WIN-DU0DFC9G5VV.ibm.com (unknown [9.61.251.122]) by smtpav05.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 22 Sep 2026 18:36:58 +0000 (GMT) From: Konstantin Shkolnyy To: mjrosato@linux.ibm.com Cc: alifm@linux.ibm.com, farman@linux.ibm.com, richard.henderson@linaro.org, iii@linux.ibm.com, david@kernel.org, cohuck@redhat.com, pasic@linux.ibm.com, borntraeger@linux.ibm.com, qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Konstantin Shkolnyy Subject: [PATCH v9 08/16] s390x/pci: Move dma_limit from S390PCIIOMMU to S390PCIBusDevice Date: Tue, 22 Sep 2026 13:36:46 -0500 Message-Id: <20260922183654.798470-9-kshk@linux.ibm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260922183654.798470-1-kshk@linux.ibm.com> References: <20260922183654.798470-1-kshk@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=G+OJgNk5 c=1 sm=1 tr=0 ts=6ab2cacc cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VnNF1IyMAAAA:8 a=WVqpMwhuJbQVQ5-U79kA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTIyMDI3MyBTYWx0ZWRfX3xSB4Z+GxnWs vf8t9+Ra6nx7TfljE0VnfHg056MdrPPF5DvPg0N9eVIpGutFSWfoQIAr4sgku7XWUKvBDEyH80I ryYh6YJpwzVIqVPL9hW5arqkgd3P9PEXsb7WISkOPEK1IKctesLTf3KREuK7vs8C+Y7HiK5Tkr0 Hd4g2/yNsnfGxROmLKkQq5qzGsvKZwZcSubXCYo6Ls5v8ViYMMZTL0WGLwc9CRD4qPLOlv0Gj2M E8kKvAOeJZZNMICcbxclyM7r+pc8OvoRXEUfFiWn2L9Gk35Qly+dfgJsL4nlnhkMfBZHY7qMffG AOFWop+KN1O852kv92qP+yzAm4jVcg7d4q42qsmVupzJbEfdhmiRu6TIZzTgprx9mzBBgZujXyJ XIn2Xfxb3zPi2yht4thgFAnMsWfxJk6EvJTIxXRxrR/WYm63WBaAk8qD+g+8QIxLtwIxIe7L1XR ptfWVMInPf9vamdTLow== X-Proofpoint-ORIG-GUID: EvZcr79uotIxFiBKIfuX8EAKGOIGcBvQ X-Proofpoint-GUID: EvZcr79uotIxFiBKIfuX8EAKGOIGcBvQ X-Proofpoint-Spam-Info: AW1haW4tMjYwOTIyMDI3MyBTYWx0ZWRfX07dH2Qai2zlw FlYKGLuKrwTA/qKgyB59RBz+GPPXR8qq5Le+CAsHaB4BRipbYAYhBxIBJK5h7/Pr1jWaVu3vs35 xpnhOVHrwRVjpPia9j/y0ANWxJsW0fk= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-22_03,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 adultscore=0 phishscore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 priorityscore=1501 clxscore=1015 spamscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609220273 Received-SPF: pass client-ip=148.163.158.5; envelope-from=kshk@linux.ibm.com; helo=mx0b-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, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: , 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 This field is only used when S390PCIBusDevice exists, so it can be moved there to simplify S390PCIIOMMU towards a structure that contains only the IOMMU container information needed by the PCI layer for a given slot. Reviewed-by: Farhan Ali Reviewed-by: Matthew Rosato Signed-off-by: Konstantin Shkolnyy --- hw/s390x/s390-pci-bus.c | 10 +++++----- hw/s390x/s390-pci-inst.c | 23 +++++++++++------------ include/hw/s390x/s390-pci-bus.h | 2 +- 3 files changed, 17 insertions(+), 18 deletions(-) diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c index ee05447084..ad4f527430 100644 --- a/hw/s390x/s390-pci-bus.c +++ b/hw/s390x/s390-pci-bus.c @@ -610,8 +610,8 @@ static void s390_pci_ioat_replay(S390PCIBusDevice *pbdev) return; } - if (iommu->dma_limit) { - dma_avail = iommu->dma_limit->avail; + if (pbdev->dma_limit) { + dma_avail = pbdev->dma_limit->avail; } else { dma_avail = 1; } @@ -1228,7 +1228,7 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev, pbdev->forwarding_assist = false; } } - pbdev->iommu->dma_limit = s390_pci_start_dma_count(s, pbdev); + pbdev->dma_limit = s390_pci_start_dma_count(s, pbdev); /* Fill in CLP information passed via the vfio region */ s390_pci_get_clp_info(pbdev); if (!pbdev->interp) { @@ -1306,8 +1306,8 @@ static void s390_pcihost_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, pbdev->fid = 0; QTAILQ_REMOVE(&s->zpci_devs, pbdev, link); g_hash_table_remove(s->zpci_table, &pbdev->idx); - if (pbdev->iommu && pbdev->iommu->dma_limit) { - s390_pci_end_dma_count(s, pbdev->iommu->dma_limit); + if (pbdev->dma_limit) { + s390_pci_end_dma_count(s, pbdev->dma_limit); } g_hash_table_destroy(pbdev->iotlb); qdev_unrealize(dev); diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c index 7081be4619..dc52da41b5 100644 --- a/hw/s390x/s390-pci-inst.c +++ b/hw/s390x/s390-pci-inst.c @@ -28,17 +28,17 @@ #include "trace.h" -static inline void inc_dma_avail(S390PCIIOMMU *iommu) +static inline void inc_dma_avail(S390PCIBusDevice *pbdev) { - if (iommu->dma_limit) { - iommu->dma_limit->avail++; + if (pbdev->dma_limit) { + pbdev->dma_limit->avail++; } } -static inline void dec_dma_avail(S390PCIIOMMU *iommu) +static inline void dec_dma_avail(S390PCIBusDevice *pbdev) { - if (iommu->dma_limit) { - iommu->dma_limit->avail--; + if (pbdev->dma_limit) { + pbdev->dma_limit->avail--; } } @@ -633,7 +633,6 @@ int pcistg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra) uint32_t s390_pci_update_iotlb(S390PCIBusDevice *pbdev, S390IOTLBEntry *entry) { - S390PCIIOMMU *iommu = pbdev->iommu; S390IOTLBEntry *cache = g_hash_table_lookup(pbdev->iotlb, &entry->iova); IOMMUTLBEvent event = { .type = entry->perm ? IOMMU_NOTIFIER_MAP : IOMMU_NOTIFIER_UNMAP, @@ -651,7 +650,7 @@ uint32_t s390_pci_update_iotlb(S390PCIBusDevice *pbdev, goto out; } g_hash_table_remove(pbdev->iotlb, &entry->iova); - inc_dma_avail(iommu); + inc_dma_avail(pbdev); /* Don't notify the iommu yet, maybe we can bundle contiguous unmaps */ goto out; } else { @@ -674,7 +673,7 @@ uint32_t s390_pci_update_iotlb(S390PCIBusDevice *pbdev, cache->len = TARGET_PAGE_SIZE; cache->perm = entry->perm; g_hash_table_replace(pbdev->iotlb, &cache->iova, cache); - dec_dma_avail(iommu); + dec_dma_avail(pbdev); } /* @@ -684,7 +683,7 @@ uint32_t s390_pci_update_iotlb(S390PCIBusDevice *pbdev, memory_region_notify_iommu(&pbdev->iommu_mr, 0, event); out: - return iommu->dma_limit ? iommu->dma_limit->avail : 1; + return pbdev->dma_limit ? pbdev->dma_limit->avail : 1; } static void s390_pci_batch_unmap(S390PCIBusDevice *pbdev, uint64_t iova, @@ -761,8 +760,8 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra) } iommu = pbdev->iommu; - if (iommu->dma_limit) { - dma_avail = iommu->dma_limit->avail; + if (pbdev->dma_limit) { + dma_avail = pbdev->dma_limit->avail; } else { dma_avail = 1; } diff --git a/include/hw/s390x/s390-pci-bus.h b/include/hw/s390x/s390-pci-bus.h index 24f6e60786..126a50c98b 100644 --- a/include/hw/s390x/s390-pci-bus.h +++ b/include/hw/s390x/s390-pci-bus.h @@ -279,7 +279,6 @@ struct S390PCIIOMMU { uint64_t pba; uint64_t pal; uint64_t max_dma_limit; - S390PCIDMACount *dma_limit; }; typedef struct S390PCIIOMMUTable { @@ -353,6 +352,7 @@ struct S390PCIBusDevice { IOMMUMemoryRegion iommu_mr; MemoryRegion *dm_mr; GHashTable *iotlb; + S390PCIDMACount *dma_limit; MemoryRegion msix_notify_mr; IndAddr *summary_ind; IndAddr *indicator; -- 2.34.1