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GET /api/patches/127916/?format=api
{ "id": 127916, "url": "http://patches.dpdk.org/api/patches/127916/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/20230601200812.672233-9-maxime.coquelin@redhat.com/", "project": { "id": 1, "url": "http://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": "<20230601200812.672233-9-maxime.coquelin@redhat.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20230601200812.672233-9-maxime.coquelin@redhat.com", "date": "2023-06-01T20:07:54", "name": "[v4,08/26] vhost: retry translating IOVA after IOTLB miss", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "7cd1ed2679ab34c4297c3cdfeecdc7bd8fb8adac", "submitter": { "id": 512, "url": "http://patches.dpdk.org/api/people/512/?format=api", "name": "Maxime Coquelin", "email": "maxime.coquelin@redhat.com" }, "delegate": { "id": 2642, "url": "http://patches.dpdk.org/api/users/2642/?format=api", "username": "mcoquelin", "first_name": "Maxime", "last_name": "Coquelin", "email": "maxime.coquelin@redhat.com" }, "mbox": "http://patches.dpdk.org/project/dpdk/patch/20230601200812.672233-9-maxime.coquelin@redhat.com/mbox/", "series": [ { "id": 28308, "url": "http://patches.dpdk.org/api/series/28308/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=28308", "date": "2023-06-01T20:07:46", "name": "Add VDUSE support to Vhost library", "version": 4, "mbox": "http://patches.dpdk.org/series/28308/mbox/" } ], "comments": "http://patches.dpdk.org/api/patches/127916/comments/", "check": "success", "checks": "http://patches.dpdk.org/api/patches/127916/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 5E66A42C08;\n\tThu, 1 Jun 2023 22:09:15 +0200 (CEST)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 51CF742DAB;\n\tThu, 1 Jun 2023 22:08:50 +0200 (CEST)", "from us-smtp-delivery-124.mimecast.com\n (us-smtp-delivery-124.mimecast.com [170.10.133.124])\n by mails.dpdk.org (Postfix) with ESMTP id 0546642DAB\n for <dev@dpdk.org>; Thu, 1 Jun 2023 22:08:47 +0200 (CEST)", "from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com\n [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS\n (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id\n us-mta-396-aYb8ss6nPLeFvkrCZvaaHg-1; Thu, 01 Jun 2023 16:08:43 -0400", "from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com\n [10.11.54.4])\n (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n (No client certificate requested)\n by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E81DC800B2A;\n Thu, 1 Jun 2023 20:08:42 +0000 (UTC)", "from max-t490s.redhat.com (unknown [10.39.208.25])\n by smtp.corp.redhat.com (Postfix) with ESMTP id 4A38D202696C;\n Thu, 1 Jun 2023 20:08:40 +0000 (UTC)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1685650127;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=YVqmLHMAAAMHCW9ouzdoXrU9qsZSPl5hdtEviSt13uc=;\n b=adFmiTZ5l2+5TYz+aSpJxTsNU1PTvuhIZ72JhjqzidU6XuFkVrVaxExyIPe0YSxl6jmYP3\n LJ0zQBNr7raimk8Qgvb4B5sD1dw5zw3XLcAPrWKLDF58gSvbsrhl+vq0SplyeCKrs3INuU\n 9PlVqkpaOOb1Bm4PDxfWofvCaxweScE=", "X-MC-Unique": "aYb8ss6nPLeFvkrCZvaaHg-1", "From": "Maxime Coquelin <maxime.coquelin@redhat.com>", "To": "dev@dpdk.org, chenbo.xia@intel.com, david.marchand@redhat.com,\n mkp@redhat.com, fbl@redhat.com, jasowang@redhat.com,\n cunming.liang@intel.com, xieyongji@bytedance.com, echaudro@redhat.com,\n eperezma@redhat.com, amorenoz@redhat.com, lulu@redhat.com", "Cc": "Maxime Coquelin <maxime.coquelin@redhat.com>", "Subject": "[PATCH v4 08/26] vhost: retry translating IOVA after IOTLB miss", "Date": "Thu, 1 Jun 2023 22:07:54 +0200", "Message-Id": "<20230601200812.672233-9-maxime.coquelin@redhat.com>", "In-Reply-To": "<20230601200812.672233-1-maxime.coquelin@redhat.com>", "References": "<20230601200812.672233-1-maxime.coquelin@redhat.com>", "MIME-Version": "1.0", "X-Scanned-By": "MIMEDefang 3.1 on 10.11.54.4", "X-Mimecast-Spam-Score": "0", "X-Mimecast-Originator": "redhat.com", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain; charset=\"US-ASCII\"; x-default=true", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <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 <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org" }, "content": "Vhost-user backend IOTLB misses and updates are\nasynchronous, so IOVA address translation function\njust fails after having sent an IOTLB miss update if needed\nentry was not in the IOTLB cache.\n\nThis is not the case for VDUSE, for which the needed IOTLB\nupdate is returned directly when sending an IOTLB miss.\n\nThis patch retry again finding the needed entry in the\nIOTLB cache after having sent an IOTLB miss.\n\nSigned-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>\nReviewed-by: Chenbo Xia <chenbo.xia@intel.com>\n---\n lib/vhost/vhost.c | 6 ++++++\n 1 file changed, 6 insertions(+)", "diff": "diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c\nindex 3ddd2a963f..7e1af487c1 100644\n--- a/lib/vhost/vhost.c\n+++ b/lib/vhost/vhost.c\n@@ -100,6 +100,12 @@ __vhost_iova_to_vva(struct virtio_net *dev, struct vhost_virtqueue *vq,\n \t\tvhost_user_iotlb_rd_lock(vq);\n \t}\n \n+\ttmp_size = *size;\n+\t/* Retry in case of VDUSE, as it is synchronous */\n+\tvva = vhost_user_iotlb_cache_find(dev, iova, &tmp_size, perm);\n+\tif (tmp_size == *size)\n+\t\treturn vva;\n+\n \treturn 0;\n }\n \n", "prefixes": [ "v4", "08/26" ] }