Patch Detail

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{
    "id": 85603,
    "url": "https://patches.dpdk.org/api/patches/85603/?format=api",
    "web_url": "https://patches.dpdk.org/project/dpdk/patch/20201221142321.51606-4-joyce.kong@arm.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": "<20201221142321.51606-4-joyce.kong@arm.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20201221142321.51606-4-joyce.kong@arm.com",
    "date": "2020-12-21T14:23:20",
    "name": "[v1,3/4] net/virtio: replace full barrier with relaxed barrier for Arm platform",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": true,
    "hash": "0109f6dbab5f44d908a880bdd1a337c4e849e8c8",
    "submitter": {
        "id": 970,
        "url": "https://patches.dpdk.org/api/people/970/?format=api",
        "name": "Joyce Kong",
        "email": "joyce.kong@arm.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/20201221142321.51606-4-joyce.kong@arm.com/mbox/",
    "series": [
        {
            "id": 14407,
            "url": "https://patches.dpdk.org/api/series/14407/?format=api",
            "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=14407",
            "date": "2020-12-21T14:23:17",
            "name": "replace smp barriers in virtio with C11 atomic",
            "version": 1,
            "mbox": "https://patches.dpdk.org/series/14407/mbox/"
        }
    ],
    "comments": "https://patches.dpdk.org/api/patches/85603/comments/",
    "check": "success",
    "checks": "https://patches.dpdk.org/api/patches/85603/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 dpdk.org (dpdk.org [92.243.14.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id DF7E2A09EF;\n\tMon, 21 Dec 2020 15:24:49 +0100 (CET)",
            "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id DFC3BCC4D;\n\tMon, 21 Dec 2020 15:23:56 +0100 (CET)",
            "from foss.arm.com (foss.arm.com [217.140.110.172])\n by dpdk.org (Postfix) with ESMTP id 682BCCC48\n for <dev@dpdk.org>; Mon, 21 Dec 2020 15:23:55 +0100 (CET)",
            "from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14])\n by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id DEEC41FB;\n Mon, 21 Dec 2020 06:23:53 -0800 (PST)",
            "from net-arm-thunderx2-03.shanghai.arm.com\n (net-arm-thunderx2-03.shanghai.arm.com [10.169.208.206])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id B1A903F6CF;\n Mon, 21 Dec 2020 06:23:51 -0800 (PST)"
        ],
        "From": "Joyce Kong <joyce.kong@arm.com>",
        "To": "maxime.coquelin@redhat.com, chenbo.xia@intel.com,\n honnappa.nagarahalli@arm.com, ruifeng.wang@arm.com",
        "Cc": "dev@dpdk.org,\n\tnd@arm.com",
        "Date": "Mon, 21 Dec 2020 22:23:20 +0800",
        "Message-Id": "<20201221142321.51606-4-joyce.kong@arm.com>",
        "X-Mailer": "git-send-email 2.29.2",
        "In-Reply-To": "<20201221142321.51606-1-joyce.kong@arm.com>",
        "References": "<20201221142321.51606-1-joyce.kong@arm.com>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "Subject": "[dpdk-dev] [PATCH v1 3/4] net/virtio: replace full barrier with\n\trelaxed barrier for Arm platform",
        "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 <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",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "Relax the full write barriers to one-way barriers for virtio\ncontrol path for Arm platform\n\nSigned-off-by: Joyce Kong <joyce.kong@arm.com>\nReviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>\n---\n drivers/net/virtio/virtio_ethdev.c | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)",
    "diff": "diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c\nindex 0d91f7a50..b3e5cba70 100644\n--- a/drivers/net/virtio/virtio_ethdev.c\n+++ b/drivers/net/virtio/virtio_ethdev.c\n@@ -203,8 +203,8 @@ virtio_send_command_packed(struct virtnet_ctl *cvq,\n \t\tvq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;\n \t}\n \n-\tvirtio_wmb(vq->hw->weak_barriers);\n-\tdesc[head].flags = VRING_DESC_F_NEXT | flags;\n+\tvirtqueue_store_flags_packed(&desc[head], VRING_DESC_F_NEXT | flags,\n+\t\t\tvq->hw->weak_barriers);\n \n \tvirtio_wmb(vq->hw->weak_barriers);\n \tvirtqueue_notify(vq);\n",
    "prefixes": [
        "v1",
        "3/4"
    ]
}