Patch Detail

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{
    "id": 40824,
    "url": "http://patches.dpdk.org/api/patches/40824/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/patch/20180608103913.11517-7-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": "<20180608103913.11517-7-maxime.coquelin@redhat.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20180608103913.11517-7-maxime.coquelin@redhat.com",
    "date": "2018-06-08T10:39:12",
    "name": "[dpdk-dev,6/7] vhost: prefetch first descriptor in dequeue path",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "2fe4d1924c5a715376fb8e14245041715fd8c219",
    "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/20180608103913.11517-7-maxime.coquelin@redhat.com/mbox/",
    "series": [
        {
            "id": 50,
            "url": "http://patches.dpdk.org/api/series/50/?format=api",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=50",
            "date": "2018-06-08T10:39:06",
            "name": "vhost: generalize buffer vectors",
            "version": 1,
            "mbox": "http://patches.dpdk.org/series/50/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/patches/40824/comments/",
    "check": "fail",
    "checks": "http://patches.dpdk.org/api/patches/40824/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 633FB6CD1;\n\tFri,  8 Jun 2018 12:39:53 +0200 (CEST)",
            "from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73])\n\tby dpdk.org (Postfix) with ESMTP id B5FC46CA3\n\tfor <dev@dpdk.org>; Fri,  8 Jun 2018 12:39:49 +0200 (CEST)",
            "from smtp.corp.redhat.com\n\t(int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby mx1.redhat.com (Postfix) with ESMTPS id 2285840200A3;\n\tFri,  8 Jun 2018 10:39:49 +0000 (UTC)",
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        ],
        "From": "Maxime Coquelin <maxime.coquelin@redhat.com>",
        "To": "zhihong.wang@intel.com,\n\ttiwei.bie@intel.com,\n\tdev@dpdk.org",
        "Cc": "Maxime Coquelin <maxime.coquelin@redhat.com>",
        "Date": "Fri,  8 Jun 2018 12:39:12 +0200",
        "Message-Id": "<20180608103913.11517-7-maxime.coquelin@redhat.com>",
        "In-Reply-To": "<20180608103913.11517-1-maxime.coquelin@redhat.com>",
        "References": "<20180608103913.11517-1-maxime.coquelin@redhat.com>",
        "X-Scanned-By": "MIMEDefang 2.78 on 10.11.54.3",
        "X-Greylist": [
            "Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.11.55.6]); Fri, 08 Jun 2018 10:39:49 +0000 (UTC)",
            "inspected by milter-greylist-4.5.16 (mx1.redhat.com\n\t[10.11.55.6]); \n\tFri, 08 Jun 2018 10:39:49 +0000 (UTC) for IP:'10.11.54.3'\n\tDOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com'\n\tHELO:'smtp.corp.redhat.com' FROM:'maxime.coquelin@redhat.com' RCPT:''"
        ],
        "Subject": "[dpdk-dev] [PATCH 6/7] vhost: prefetch first descriptor in dequeue\n\tpath",
        "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://dpdk.org/ml/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>",
        "List-Archive": "<http://dpdk.org/ml/archives/dev/>",
        "List-Post": "<mailto:dev@dpdk.org>",
        "List-Help": "<mailto:dev-request@dpdk.org?subject=help>",
        "List-Subscribe": "<https://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>\n---\n lib/librte_vhost/virtio_net.c | 2 ++\n 1 file changed, 2 insertions(+)",
    "diff": "diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c\nindex 6e4004666..41386fbce 100644\n--- a/lib/librte_vhost/virtio_net.c\n+++ b/lib/librte_vhost/virtio_net.c\n@@ -1076,6 +1076,8 @@ rte_vhost_dequeue_burst(int vid, uint16_t queue_id,\n \t\tvq->shadow_used_idx = 0;\n \t}\n \n+\trte_prefetch0(&vq->avail->ring[vq->last_avail_idx & (vq->size - 1)]);\n+\n \t/*\n \t * Construct a RARP broadcast packet, and inject it to the \"pkts\"\n \t * array, to looks like that guest actually send such packet.\n",
    "prefixes": [
        "dpdk-dev",
        "6/7"
    ]
}