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GET /api/patches/808526/?format=api
{ "id": 808526, "url": "http://patchwork.ozlabs.org/api/patches/808526/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/1504239778-29893-4-git-send-email-zyimin@linux.vnet.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": "<1504239778-29893-4-git-send-email-zyimin@linux.vnet.ibm.com>", "list_archive_url": null, "date": "2017-09-01T04:22:58", "name": "[v2,3/3] s390x/pci: add iommu replay callback", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "339b2e9c696f0c9e6522e324ed7961a4b10b64a7", "submitter": { "id": 66807, "url": "http://patchwork.ozlabs.org/api/people/66807/?format=api", "name": "Yi Min Zhao", "email": "zyimin@linux.vnet.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/1504239778-29893-4-git-send-email-zyimin@linux.vnet.ibm.com/mbox/", "series": [ { "id": 947, "url": "http://patchwork.ozlabs.org/api/series/947/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=947", "date": "2017-09-01T04:22:55", "name": "three zpci patches", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/947/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/808526/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/808526/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@bilbo.ozlabs.org", "Authentication-Results": "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=<UNKNOWN>)", "Received": [ "from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xk5mZ4hYTz9s0g\n\tfor <incoming@patchwork.ozlabs.org>;\n\tFri, 1 Sep 2017 14:26:54 +1000 (AEST)", "from localhost ([::1]:45183 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1dndXg-0006MK-Pj\n\tfor incoming@patchwork.ozlabs.org; Fri, 01 Sep 2017 00:26:52 -0400", "from eggs.gnu.org ([2001:4830:134:3::10]:34989)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <zyimin@linux.vnet.ibm.com>) id 1dndVb-0004lu-17\n\tfor qemu-devel@nongnu.org; Fri, 01 Sep 2017 00:24:47 -0400", "from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from <zyimin@linux.vnet.ibm.com>) id 1dndVX-0002DU-3X\n\tfor qemu-devel@nongnu.org; Fri, 01 Sep 2017 00:24:43 -0400", "from mx0a-001b2d01.pphosted.com ([148.163.156.1]:50798)\n\tby eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32)\n\t(Exim 4.71) (envelope-from <zyimin@linux.vnet.ibm.com>)\n\tid 1dndVW-0002Co-Qv\n\tfor qemu-devel@nongnu.org; Fri, 01 Sep 2017 00:24:39 -0400", "from pps.filterd (m0098396.ppops.net [127.0.0.1])\n\tby mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id\n\tv814OFEK088529\n\tfor <qemu-devel@nongnu.org>; Fri, 1 Sep 2017 00:24:37 -0400", "from e23smtp06.au.ibm.com (e23smtp06.au.ibm.com [202.81.31.148])\n\tby mx0a-001b2d01.pphosted.com with ESMTP id 2cpram94wq-1\n\t(version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT)\n\tfor <qemu-devel@nongnu.org>; Fri, 01 Sep 2017 00:24:37 -0400", "from localhost\n\tby e23smtp06.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use\n\tOnly! Violators will be prosecuted\n\tfor <qemu-devel@nongnu.org> from <zyimin@linux.vnet.ibm.com>;\n\tFri, 1 Sep 2017 14:24:35 +1000", "from d23relay07.au.ibm.com (202.81.31.226)\n\tby e23smtp06.au.ibm.com (202.81.31.212) with IBM ESMTP SMTP Gateway:\n\tAuthorized Use Only! Violators will be prosecuted; \n\tFri, 1 Sep 2017 14:24:32 +1000", "from d23av06.au.ibm.com (d23av06.au.ibm.com [9.190.235.151])\n\tby d23relay07.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n\tv814NH7P33161254\n\tfor <qemu-devel@nongnu.org>; Fri, 1 Sep 2017 14:23:17 +1000", "from d23av06.au.ibm.com (localhost [127.0.0.1])\n\tby d23av06.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id\n\tv814NGew001382\n\tfor <qemu-devel@nongnu.org>; Fri, 1 Sep 2017 14:23:17 +1000", "from r35lp25.boeblingen.de.ibm.com (r35lp25.boeblingen.de.ibm.com\n\t[9.152.111.25])\n\tby d23av06.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id\n\tv814N2UE001078; Fri, 1 Sep 2017 14:23:13 +1000" ], "From": "Yi Min Zhao <zyimin@linux.vnet.ibm.com>", "To": "qemu-devel@nongnu.org", "Date": "Fri, 1 Sep 2017 06:22:58 +0200", "X-Mailer": "git-send-email 2.3.0", "In-Reply-To": "<1504239778-29893-1-git-send-email-zyimin@linux.vnet.ibm.com>", "References": "<1504239778-29893-1-git-send-email-zyimin@linux.vnet.ibm.com>", "X-TM-AS-MML": "disable", "x-cbid": "17090104-0040-0000-0000-000003525894", "X-IBM-AV-DETECTION": "SAVI=unused REMOTE=unused XFE=unused", "x-cbparentid": "17090104-0041-0000-0000-00000CD0604B", "Message-Id": "<1504239778-29893-4-git-send-email-zyimin@linux.vnet.ibm.com>", "X-Proofpoint-Virus-Version": "vendor=fsecure engine=2.50.10432:, ,\n\tdefinitions=2017-08-31_09:, , signatures=0", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n\tspamscore=0 suspectscore=1\n\tmalwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam\n\tadjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000\n\tdefinitions=main-1709010064", "X-detected-operating-system": "by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy]", "X-Received-From": "148.163.156.1", "Subject": "[Qemu-devel] [PATCH v2 3/3] s390x/pci: add iommu replay callback", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Id": "<qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<http://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\t<mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Cc": "pasic@linux.vnet.ibm.com, zyimin@linux.vnet.ibm.com,\n\trichard.henderson@linaro.org, cohuck@redhat.com,\n\tpmorel@linux.vnet.ibm.com, agraf@suse.de, borntraeger@de.ibm.com", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "\"Qemu-devel\"\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>" }, "content": "Let's introduce iommu replay callback for s390 pci iommu memory region.\nCurrently we don't need any dma mapping replay. So let it return\ndirectly. This implementation will avoid meaningless loops calling\ntranslation callback.\n\nReviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>\nReviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>\nSigned-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>\n---\n hw/s390x/s390-pci-bus.c | 11 +++++++++++\n 1 file changed, 11 insertions(+)", "diff": "diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c\nindex bd8a3e1e1c..69f45e3715 100644\n--- a/hw/s390x/s390-pci-bus.c\n+++ b/hw/s390x/s390-pci-bus.c\n@@ -397,6 +397,16 @@ static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr,\n return ret;\n }\n \n+static void s390_pci_iommu_replay(IOMMUMemoryRegion *iommu,\n+ IOMMUNotifier *notifier)\n+{\n+ /* It's impossible to plug a pci device on s390x that already has iommu\n+ * mappings which need to be replayed, that is due to the \"one iommu per\n+ * zpci device\" construct. So we don't need iommu replay currently.\n+ */\n+ return;\n+}\n+\n static S390PCIIOMMU *s390_pci_get_iommu(S390pciState *s, PCIBus *bus,\n int devfn)\n {\n@@ -1045,6 +1055,7 @@ static void s390_iommu_memory_region_class_init(ObjectClass *klass, void *data)\n IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);\n \n imrc->translate = s390_translate_iommu;\n+ imrc->replay = s390_pci_iommu_replay;\n }\n \n static const TypeInfo s390_iommu_memory_region_info = {\n", "prefixes": [ "v2", "3/3" ] }