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{
    "id": 73354,
    "url": "https://patches.dpdk.org/api/patches/73354/",
    "web_url": "https://patches.dpdk.org/patch/73354/",
    "project": {
        "id": 1,
        "url": "https://patches.dpdk.org/api/projects/1/",
        "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"
    },
    "msgid": "<20200706234333.26310-2-honnappa.nagarahalli@arm.com>",
    "date": "2020-07-06T23:43:32",
    "name": "[v4,2/3] doc: update armv8-a IO barrier changes",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": true,
    "hash": "cee0c0b65169fe77a2b99771768812cf786a1680",
    "submitter": {
        "id": 1045,
        "url": "https://patches.dpdk.org/api/people/1045/",
        "name": "Honnappa Nagarahalli",
        "email": "honnappa.nagarahalli@arm.com"
    },
    "delegate": {
        "id": 24651,
        "url": "https://patches.dpdk.org/api/users/24651/",
        "username": "dmarchand",
        "first_name": "David",
        "last_name": "Marchand",
        "email": "david.marchand@redhat.com"
    },
    "mbox": "https://patches.dpdk.org/patch/73354/mbox/",
    "series": [
        {
            "id": 10828,
            "url": "https://patches.dpdk.org/api/series/10828/",
            "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=10828",
            "date": "2020-07-06T23:43:31",
            "name": "[v4,1/3] eal: adjust barriers for IO on Armv8-a",
            "version": 4,
            "mbox": "https://patches.dpdk.org/series/10828/mbox/"
        }
    ],
    "comments": "https://patches.dpdk.org/api/patches/73354/comments/",
    "check": "fail",
    "checks": "https://patches.dpdk.org/api/patches/73354/checks/",
    "tags": {},
    "headers": {
        "X-Mailman-Version": "2.1.15",
        "In-Reply-To": "<20200706234333.26310-1-honnappa.nagarahalli@arm.com>",
        "Errors-To": "dev-bounces@dpdk.org",
        "X-Mailer": "git-send-email 2.17.1",
        "Received": [
            "from dpdk.org (dpdk.org [92.243.14.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 98AAAA00C5;\n\tTue,  7 Jul 2020 01:43:57 +0200 (CEST)",
            "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 962961DC8B;\n\tTue,  7 Jul 2020 01:43:55 +0200 (CEST)",
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        ],
        "References": "<20200410164127.54229-1-gavin.hu@arm.com>\n <20200706234333.26310-1-honnappa.nagarahalli@arm.com>",
        "Delivered-To": "patchwork@inbox.dpdk.org",
        "X-BeenThere": "dev@dpdk.org",
        "Message-Id": "<20200706234333.26310-2-honnappa.nagarahalli@arm.com>",
        "List-Post": "<mailto:dev@dpdk.org>",
        "Precedence": "list",
        "From": "Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>",
        "X-Original-To": "patchwork@inbox.dpdk.org",
        "Return-Path": "<dev-bounces@dpdk.org>",
        "Sender": "\"dev\" <dev-bounces@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>",
        "To": "dev@dpdk.org, honnappa.nagarahalli@arm.com, ruifeng.wang@arm.com,\n jerinj@marvell.com, hemant.agrawal@nxp.com, ajit.khaparde@broadcom.com,\n igorch@amazon.com, thomas@monjalon.net, viacheslavo@mellanox.com,\n arybchenko@solarflare.com, bruce.richardson@intel.com",
        "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>",
        "Date": "Mon,  6 Jul 2020 18:43:32 -0500",
        "Cc": "nd@arm.com",
        "List-Archive": "<http://mails.dpdk.org/archives/dev/>",
        "Subject": "[dpdk-dev] [PATCH v4 2/3] doc: update armv8-a IO barrier changes"
    },
    "content": "Updated the use of DMB instruction in rte_*mb APIs for Armv8-a.\n\nSigned-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>\nAcked-by: Jerin Jacob <jerinj@marvell.com>\n---\n doc/guides/rel_notes/release_20_08.rst | 7 +++++++\n 1 file changed, 7 insertions(+)",
    "diff": "diff --git a/doc/guides/rel_notes/release_20_08.rst b/doc/guides/rel_notes/release_20_08.rst\nindex 5cbc4ce14..567ae6b2a 100644\n--- a/doc/guides/rel_notes/release_20_08.rst\n+++ b/doc/guides/rel_notes/release_20_08.rst\n@@ -56,6 +56,13 @@ New Features\n      Also, make sure to start the actual text at the margin.\n      =========================================================\n \n+* **rte_*mb APIs are updated to use DMB instruction for Armv8-a.**\n+\n+  Armv8-a memory model has been strengthened to require other-multi-copy\n+  atomicity. This allows for using DMB instruction instead of DSB for IO\n+  barriers. rte_*mb APIs, for Armv8-a platforms, are changed to use DMB\n+  instruction to reflect this.\n+\n * **Updated PCAP driver.**\n \n   Updated PCAP driver with new features and improvements, including:\n",
    "prefixes": [
        "v4",
        "2/3"
    ]
}