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{
    "id": 50070,
    "url": "http://patches.dpdk.org/api/covers/50070/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/cover/20190128172945.27251-1-gage.eads@intel.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": "<20190128172945.27251-1-gage.eads@intel.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20190128172945.27251-1-gage.eads@intel.com",
    "date": "2019-01-28T17:29:44",
    "name": "[0/1] Add 128-bit compare and set",
    "submitter": {
        "id": 586,
        "url": "http://patches.dpdk.org/api/people/586/?format=api",
        "name": "Eads, Gage",
        "email": "gage.eads@intel.com"
    },
    "mbox": "http://patches.dpdk.org/project/dpdk/cover/20190128172945.27251-1-gage.eads@intel.com/mbox/",
    "series": [
        {
            "id": 3339,
            "url": "http://patches.dpdk.org/api/series/3339/?format=api",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=3339",
            "date": "2019-01-28T17:29:44",
            "name": "Add 128-bit compare and set",
            "version": 1,
            "mbox": "http://patches.dpdk.org/series/3339/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/covers/50070/comments/",
    "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 8F70C5F32;\n\tMon, 28 Jan 2019 18:29:05 +0100 (CET)",
            "from mga11.intel.com (mga11.intel.com [192.55.52.93])\n\tby dpdk.org (Postfix) with ESMTP id 7D8005942\n\tfor <dev@dpdk.org>; Mon, 28 Jan 2019 18:29:03 +0100 (CET)",
            "from fmsmga005.fm.intel.com ([10.253.24.32])\n\tby fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t28 Jan 2019 09:29:02 -0800",
            "from txasoft-yocto.an.intel.com ([10.123.72.192])\n\tby fmsmga005.fm.intel.com with ESMTP; 28 Jan 2019 09:29:01 -0800"
        ],
        "X-Amp-Result": "SKIPPED(no attachment in message)",
        "X-Amp-File-Uploaded": "False",
        "X-ExtLoop1": "1",
        "X-IronPort-AV": "E=Sophos;i=\"5.56,534,1539673200\"; d=\"scan'208\";a=\"315547954\"",
        "From": "Gage Eads <gage.eads@intel.com>",
        "To": "dev@dpdk.org",
        "Cc": "olivier.matz@6wind.com, arybchenko@solarflare.com,\n\tbruce.richardson@intel.com, konstantin.ananyev@intel.com,\n\tgavin.hu@arm.com, \n\tHonnappa.Nagarahalli@arm.com, nd@arm.com, chaozhu@linux.vnet.ibm.com, \n\tjerinj@marvell.com, hemant.agrawal@nxp.com",
        "Date": "Mon, 28 Jan 2019 11:29:44 -0600",
        "Message-Id": "<20190128172945.27251-1-gage.eads@intel.com>",
        "X-Mailer": "git-send-email 2.13.6",
        "Subject": "[dpdk-dev] [PATCH 0/1] Add 128-bit compare and set",
        "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\t<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\t<mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "This patch addresses x86-64 only; other architectures can/will be supported\nin the future. The __atomic intrinsic was considered for the\nimplementation, however libatomic was found[1] to use locks to implement\nthe 128-bit CAS on at least one architecture and so is eschewed here.\nThe interface is modeled after the __atomic_compare_exchange_16 (which\nitself is based on the C++11 memory model) to best support weak\nconsistency architectures.\n\nThis patch was originally part of a series that introduces a non-blocking stack\nmempool handler[2], and is required by a non-blocking ring patchset. This\npatch was spun off so that the the NB ring depends only on this patch\nand not the entire non-blocking stack patchset.\n\n[1] http://mails.dpdk.org/archives/dev/2019-January/124002.html\n[1] http://mails.dpdk.org/archives/dev/2019-January/123653.html\n\nGage Eads (1):\n  eal: add 128-bit cmpset (x86-64 only)\n\n .../common/include/arch/x86/rte_atomic_64.h        | 31 +++++++++++\n lib/librte_eal/common/include/generic/rte_atomic.h | 65 ++++++++++++++++++++++\n 2 files changed, 96 insertions(+)"
}