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{
    "id": 66638,
    "url": "http://patches.dpdk.org/api/patches/66638/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/patch/20200313091835.58039-6-gavin.hu@arm.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": "<20200313091835.58039-6-gavin.hu@arm.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20200313091835.58039-6-gavin.hu@arm.com",
    "date": "2020-03-13T09:18:33",
    "name": "[RFC,v1,5/7] net/ena: relax the barrier for bounce buffer",
    "commit_ref": null,
    "pull_url": null,
    "state": "rfc",
    "archived": true,
    "hash": "69908159be8d47541e7cad6136cdda09fdc6a13d",
    "submitter": {
        "id": 1018,
        "url": "http://patches.dpdk.org/api/people/1018/?format=api",
        "name": "Gavin Hu",
        "email": "gavin.hu@arm.com"
    },
    "delegate": {
        "id": 319,
        "url": "http://patches.dpdk.org/api/users/319/?format=api",
        "username": "fyigit",
        "first_name": "Ferruh",
        "last_name": "Yigit",
        "email": "ferruh.yigit@amd.com"
    },
    "mbox": "http://patches.dpdk.org/project/dpdk/patch/20200313091835.58039-6-gavin.hu@arm.com/mbox/",
    "series": [
        {
            "id": 8902,
            "url": "http://patches.dpdk.org/api/series/8902/?format=api",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=8902",
            "date": "2020-03-13T09:18:28",
            "name": "relax barriers for ENA PMD and small fixes",
            "version": 1,
            "mbox": "http://patches.dpdk.org/series/8902/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/patches/66638/comments/",
    "check": "fail",
    "checks": "http://patches.dpdk.org/api/patches/66638/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 B98F8A0567;\n\tFri, 13 Mar 2020 10:20:34 +0100 (CET)",
            "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id D7CD11C038;\n\tFri, 13 Mar 2020 10:20:09 +0100 (CET)",
            "from foss.arm.com (foss.arm.com [217.140.110.172])\n by dpdk.org (Postfix) with ESMTP id F23A41C011\n for <dev@dpdk.org>; Fri, 13 Mar 2020 10:20:08 +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 8389631B;\n Fri, 13 Mar 2020 02:20:08 -0700 (PDT)",
            "from net-arm-thunderx2-04.shanghai.arm.com\n (net-arm-thunderx2-04.shanghai.arm.com [10.169.40.184])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 797EE3F67D;\n Fri, 13 Mar 2020 02:20:04 -0700 (PDT)"
        ],
        "From": "Gavin Hu <gavin.hu@arm.com>",
        "To": "dev@dpdk.org",
        "Cc": "nd@arm.com, david.marchand@redhat.com, thomas@monjalon.net,\n mk@semihalf.com, gtzalik@amazon.com, evgenys@amazon.com, igorch@amazon.com,\n mw@semihalf.com, Honnappa.Nagarahalli@arm.com, ruifeng.wang@arm.com,\n phil.yang@arm.com, joyce.kong@arm.com",
        "Date": "Fri, 13 Mar 2020 17:18:33 +0800",
        "Message-Id": "<20200313091835.58039-6-gavin.hu@arm.com>",
        "X-Mailer": "git-send-email 2.17.1",
        "In-Reply-To": "<20200313091835.58039-1-gavin.hu@arm.com>",
        "References": "<20200313091835.58039-1-gavin.hu@arm.com>",
        "Subject": "[dpdk-dev] [PATCH RFC v1 5/7] net/ena: relax the barrier for bounce\n\tbuffer",
        "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": "To gaurantee the update observed by NIC HW, a cio barrier is sufficient,\na io barrier, which translates to dsb on aarch64, is overkill.\n\nSuggested-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>\nSigned-off-by: Gavin Hu <gavin.hu@arm.com>\nReviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>\n---\n drivers/net/ena/base/ena_eth_com.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)",
    "diff": "diff --git a/drivers/net/ena/base/ena_eth_com.c b/drivers/net/ena/base/ena_eth_com.c\nindex d4d44226d..fce3f69eb 100644\n--- a/drivers/net/ena/base/ena_eth_com.c\n+++ b/drivers/net/ena/base/ena_eth_com.c\n@@ -69,7 +69,7 @@ static int ena_com_write_bounce_buffer_to_dev(struct ena_com_io_sq *io_sq,\n \t/* Make sure everything was written into the bounce buffer before\n \t * writing the bounce buffer to the device\n \t */\n-\twmb();\n+\trte_cio_wmb();\n \n \t/* The line is completed. Copy it to dev */\n \tENA_MEMCPY_TO_DEVICE_64(io_sq->desc_addr.pbuf_dev_addr + dst_offset,\n",
    "prefixes": [
        "RFC",
        "v1",
        "5/7"
    ]
}