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GET /api/patches/43784/?format=api
{ "id": 43784, "url": "https://patches.dpdk.org/api/patches/43784/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/1534537189-26763-1-git-send-email-nitin.katiyar@ericsson.com/", "project": { "id": 1, "url": "https://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<1534537189-26763-1-git-send-email-nitin.katiyar@ericsson.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1534537189-26763-1-git-send-email-nitin.katiyar@ericsson.com", "date": "2018-08-17T20:19:49", "name": "vhost: initializing iotlb memory only when IOMMU feature is enabled.", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": true, "hash": "0c5caf1f2a1053c861c69412e843ed9ba0bfde70", "submitter": { "id": 976, "url": "https://patches.dpdk.org/api/people/976/?format=api", "name": "Nitin Katiyar", "email": "nitin.katiyar@ericsson.com" }, "delegate": { "id": 2642, "url": "https://patches.dpdk.org/api/users/2642/?format=api", "username": "mcoquelin", "first_name": "Maxime", "last_name": "Coquelin", "email": "maxime.coquelin@redhat.com" }, "mbox": "https://patches.dpdk.org/project/dpdk/patch/1534537189-26763-1-git-send-email-nitin.katiyar@ericsson.com/mbox/", "series": [ { "id": 1013, "url": "https://patches.dpdk.org/api/series/1013/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=1013", "date": "2018-08-17T20:19:49", "name": "vhost: initializing iotlb memory only when IOMMU feature is enabled.", "version": 1, "mbox": "https://patches.dpdk.org/series/1013/mbox/" } ], "comments": "https://patches.dpdk.org/api/patches/43784/comments/", "check": "success", "checks": "https://patches.dpdk.org/api/patches/43784/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id C883BFEB;\n\tFri, 17 Aug 2018 14:18:03 +0200 (CEST)", "from sessmg22.ericsson.net (sessmg22.ericsson.net [193.180.251.58])\n\tby dpdk.org (Postfix) with ESMTP id 4BAFB2C5\n\tfor <dev@dpdk.org>; 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a=rsa-sha256; d=ericsson.com; s=mailgw201801;\n\tc=relaxed/simple; q=dns/txt; i=@ericsson.com; t=1534508282;\n\th=From:Sender:Reply-To:Subject:Date:Message-Id:To:CC:MIME-Version:Content-Type:\n\tContent-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:Resent-From:\n\tResent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:\n\tList-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;\n\tbh=S4SGIyQRlYRmclG4s8vFXLIHifoLBmqn505Vrj9B+DY=;\n\tb=FeQ8+xYvQjY0BdJyEnDd+d8sGkVSXoFC5zhht3jAyLQM6BkcPtfg/iwnp7VkVyMt\n\tzWuEk31Qa9Arnn9AdwgeKHMbHLDpPTP+UNfRZ3odFBa6br94BdvJX8FLhZ+xPdws\n\topAsPuct1jKVoUzUwFOl4AAgYYvAsjAldxEi5dUCdHc=;", "v=1; a=rsa-sha256; c=relaxed/relaxed; d=ericsson.com;\n\ts=selector1;\n\th=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n\tbh=tkK7ZMvh/9j40MXUAiWIT1NapqO4hbKeVf91ELne4xY=;\n\tb=eNOAiLarPCWHkJo+PDQpr7/lQRHIVgo39XmekSvvV9Q6H+ilc7NU73AlFOwfydM3GJDGMGDJVZT+j3DSUw6gNxZcI/kSv/RXiQzbLyGuccKHjmP6sEP5g5GXSrwoM2CSMTuQrcGh+560cl7rb4uhQ71c0QeY0YrE8ZI0VTv88Vg=" ], "X-AuditID": "c1b4fb3a-baf5f9c00000680b-2f-5b76bcfae03c", "Authentication-Results": "spf=none (sender IP is )\n\tsmtp.mailfrom=nitin.katiyar@ericsson.com; ", "From": "Nitin Katiyar <nitin.katiyar@ericsson.com>", "To": "<dev@dpdk.org>", "CC": "Nitin Katiyar <nitin.katiyar@ericsson.com>", "Date": "Sat, 18 Aug 2018 01:49:49 +0530", "Message-Id": "<1534537189-26763-1-git-send-email-nitin.katiyar@ericsson.com>", "X-Mailer": "git-send-email 1.9.1", "MIME-Version": "1.0", "Content-Type": "text/plain", "X-Originating-IP": "[125.16.128.122]", "X-ClientProxiedBy": "BM1PR0101CA0018.INDPRD01.PROD.OUTLOOK.COM\n\t(2603:1096:b00:18::28) To VI1PR0702MB3629.eurprd07.prod.outlook.com\n\t(2603:10a6:803:3::14)", "X-MS-PublicTrafficType": "Email", "X-MS-Office365-Filtering-Correlation-Id": "b9ed96c7-7c90-48eb-9cfa-08d6043b79a8", "X-Microsoft-Antispam": "BCL:0; PCL:0;\n\tRULEID:(7020095)(4652040)(8989137)(4534165)(7168020)(4627221)(201703031133081)(201702281549075)(8990107)(5600074)(711020)(2017052603328)(7153060)(7193020);\n\tSRVR:VI1PR0702MB3629; ", "X-Microsoft-Exchange-Diagnostics": [ "1; VI1PR0702MB3629;\n\t3:GPU2jgiYi4JTpuY1q8hqTabFKEtMdEqG0MEfEp46G6kDlshJ/sjjmeWPL3gA0Qlq+99aLhNV2ybgQNdjcF1BwIpeyqkRtwBZYlxBGUXJUUVyb1WtVj8RTdJQfKX/xz4fLhEnTfHypl77hsUym9vqgk02Y1Mb+64E71w9RmU2xQ6Jt9yQMcJgVNG693FohYGEHxA69CYNu9lo+T4xmi9YCncGviu9S+8pOz5ThNATgMa/ma207k+jKGuIsqSW9Bxz;\n\t25:pjCgqDQYO2dcZvRfmWzTSmCAEvNvghWIN6mJFwASb8z5DsWDeyinWx52HKzoYQrjlgR+hzibtfgf7SqqeEMNW1MgZklEpIL4B1xVxqzt/O+rZDK8hf5CN+mH3tR3iwZ52Hg2QeVWYDpELdwz0utaGHW8P4K4Oq35xGmVokQn5xsKY4xczKorQhwxTG9m04eLA6vr+1sWxJY0HrIiYz/9LASmVvdrlmtyAlaymnBqXE8OBBZEswb9twFBSMZjL15c+LRC0RMu0jSz/2QDPraSryFPCf1SEOtJb8tBJdW/SeNHy0HSUPytgB/vpemCU8T5DKxp7DZ9UNzUD4qxgNG6Zw==;\n\t31:gQFkin8zw+sGn0lHh6UrglTh/u2VI4/ocUGWa1Noa0iEWKA9WBbmHAF43EXUNGRrI8ORwcoMvn3/T7qGIwVKSWpBXV+qKR/8apTFlEQYl/iHbhhYpZB3VgciusZspLiGC3IOdeRNnu430f6vw43dAvnemhyVZEvO/zmEskd0rEZl0CCj2mxNRJUopUZjWHUPQq72ReUU7GAFMaUWnxkd8FQVwfMucCCfzcX7KJEtZl4=", "1; 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SFP:1101; SCL:1; SRVR:VI1PR0702MB3629;\n\tH:localhost.localdomain; FPR:; \n\tSPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; ", "Received-SPF": "None (protection.outlook.com: ericsson.com does not designate\n\tpermitted sender hosts)", "X-Microsoft-Antispam-Message-Info": "eoWK5c08uY27sv0Y2IOnDOQpeByrhcZtxaEfNa0CNsRSrExLLbgV+SrRWFIdzwoeP5HlLONwZnrZR+jh/4WGb/vhYhOMAd4S36HZJ0HT2nAYeBlk+Ns3FO16mMRpGKk6ittAKSEmWO+8aVsDasS1A/+0FfzTKn80JJ8ZUuxcN6gKwwENCFxhnS5OK8k9rxDWBHbjstR+rEHzCijNf1mDli9lk9Ey1RWFVffJ8kBvBYFJFq+oj1uSX2iLI0aWKw4eWdB9PBZF8l8frtA+pCgFXSmPPZO/EO+FDm8NkVppcEbJmzGaYGH1Bjx9avYKX+kbGDi4QTjX0mX3SCLIMq9HOjH/1nlwdKy8712Scie7HQs=", "SpamDiagnosticOutput": "1:99", "SpamDiagnosticMetadata": "NSPM", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "17 Aug 2018 12:18:00.4254\n\t(UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "b9ed96c7-7c90-48eb-9cfa-08d6043b79a8", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "92e84ceb-fbfd-47ab-be52-080c6b87953f", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "VI1PR0702MB3629", "X-OriginatorOrg": "ericsson.com", "X-Brightmail-Tracker": "H4sIAAAAAAAAA+NgFnrCIsWRmVeSWpSXmKPExsUyM2J7ie6vPWXRBruf61m8+7SdyYHR49eC\n\tpawBjFFcNimpOZllqUX6dglcGXdvnWEpaOCrmHDrMGsD407uLkZODgkBE4m/e/6zdDFycQgJ\n\tHGWUWPBjNSuE841R4siP82xwzvm7WxkhnCVMEh+XXAHLsAhMYJY4cu8FC8gwRoFYiXNd95kh\n\tqnqYJN6eu8MMkmATMJDYfnESO4gtIiAksfTjZSCbg4NZQE9iwV5WkLCwQKjEobPNYOUsAqoS\n\t19pWgdm8Al4S7/9+YIc4Vk7i5LHJrBBxQYmTM5+A7WUWkJA4+OIFM0SNksSuzRA3SAjMYpT4\n\t/PEdE0hCSEBd4smjbiaIIlmJo2fnsEDYvhINrZvZIOxLjBJH78tD2E3sEpOnmIHcKSGgIzGr\n\tqR4ivItd4v2uGAg7X+J+41Oo22IkLl2fxwhz56nec0wQN+xklvhy8wYrREJG4tkPSMhJCJxl\n\tldjzbS77BEadWUgemoXkoQWMTKsYRYtTi4tz042M9FKLMpOLi/Pz9PJSSzYxAuP+4JbfVjsY\n\tDz53PMQowMGoxMPLv6EsWog1say4MvcQowQHs5IIb+RyoBBvSmJlVWpRfnxRaU5q8SFGaQ4W\n\tJXFepzSLKCGB9MSS1OzU1ILUIpgsEwenVAPjgnfbhE4+UXpQmjMhYn8uT5dD/vI7hoXpLLsv\n\t+LKyf6oweicb+jOd2WD306MPa8qkGpIcn5QcFzjc2Hag+qGzsd2vK1yWKkarJq1UW5rWZ7X1\n\t2/qty3Q6GwMDQnxyVfac4D9eoFLfZqG2ZUqsf6HXunMci2t9tRvU9y3W+PqruMT94rnTD6Yr\n\tsRRnJBpqMRcVJwIAIWDZ5vcCAAA=", "Subject": "[dpdk-dev] [PATCH] vhost: initializing iotlb memory only when IOMMU\n\tfeature is enabled.", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "DPDK 17.11 introduced the IOMMU feature which caused additional\nDPDK memory requirement per vhostuser device as part of\niotlb_init(). Today this is done unconditionally (from DPDK\n17.11 onwards) i.e. irrespective of IOMMU feature being\nenabled on the vhostuser device, iotlb is initialized. This\nbreaks the backward compatibility for applications like OVS\ndue to increase in the DPDK memory footprint and causes upgrade\nfailures.\n\nThis patch is to do iotlb_init only if IOMMU feature is\nenabled on device.\n\nSigned-off-by: Nitin Katiyar <nitin.katiyar@ericsson.com>\n---\n lib/librte_vhost/iotlb.c | 7 +++++++\n lib/librte_vhost/vhost_user.c | 6 ++++++\n 2 files changed, 13 insertions(+)", "diff": "diff --git a/lib/librte_vhost/iotlb.c b/lib/librte_vhost/iotlb.c\nindex c6354fe..befa2d3 100644\n--- a/lib/librte_vhost/iotlb.c\n+++ b/lib/librte_vhost/iotlb.c\n@@ -317,6 +317,13 @@ struct vhost_iotlb_entry {\n \tstruct vhost_virtqueue *vq = dev->virtqueue[vq_index];\n \tint socket = 0;\n \n+\tif (!(dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))) {\n+\t\tRTE_LOG(INFO, VHOST_CONFIG,\n+\t\t\t\"IOMMU feature is not enabled for this dev(%s)\\n\",\n+\t\t\tdev->ifname);\n+\t\treturn 0;\n+\t}\n+\n \tif (vq->iotlb_pool) {\n \t\t/*\n \t\t * The cache has already been initialized,\ndiff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c\nindex a2d4c9f..7553a03 100644\n--- a/lib/librte_vhost/vhost_user.c\n+++ b/lib/librte_vhost/vhost_user.c\n@@ -1366,6 +1366,12 @@\n \tuint16_t i;\n \tuint64_t vva, len;\n \n+\tif (!(dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))) {\n+\t\tRTE_LOG(ERR, VHOST_CONFIG,\n+\t\t\t\"IOMMU feature is not enabled for this dev(%s)\\n\",\n+\t\t\tdev->ifname);\n+\t\treturn -1;\n+\t}\n \tswitch (imsg->type) {\n \tcase VHOST_IOTLB_UPDATE:\n \t\tlen = imsg->size;\n", "prefixes": [] }