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{
    "id": 104561,
    "url": "http://patchwork.dpdk.org/api/patches/104561/?format=api",
    "web_url": "http://patchwork.dpdk.org/project/dpdk/patch/20211122084948.39382-1-xuan.ding@intel.com/",
    "project": {
        "id": 1,
        "url": "http://patchwork.dpdk.org/api/projects/1/?format=api",
        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
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    "msgid": "<20211122084948.39382-1-xuan.ding@intel.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20211122084948.39382-1-xuan.ding@intel.com",
    "date": "2021-11-22T08:49:48",
    "name": "doc: update recommended IOVA mode for async vhost",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": true,
    "hash": "d9eeb7b6bab96ec09e372b720627c824612c9034",
    "submitter": {
        "id": 1401,
        "url": "http://patchwork.dpdk.org/api/people/1401/?format=api",
        "name": "Ding, Xuan",
        "email": "xuan.ding@intel.com"
    },
    "delegate": {
        "id": 2642,
        "url": "http://patchwork.dpdk.org/api/users/2642/?format=api",
        "username": "mcoquelin",
        "first_name": "Maxime",
        "last_name": "Coquelin",
        "email": "maxime.coquelin@redhat.com"
    },
    "mbox": "http://patchwork.dpdk.org/project/dpdk/patch/20211122084948.39382-1-xuan.ding@intel.com/mbox/",
    "series": [
        {
            "id": 20677,
            "url": "http://patchwork.dpdk.org/api/series/20677/?format=api",
            "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=20677",
            "date": "2021-11-22T08:49:48",
            "name": "doc: update recommended IOVA mode for async vhost",
            "version": 1,
            "mbox": "http://patchwork.dpdk.org/series/20677/mbox/"
        }
    ],
    "comments": "http://patchwork.dpdk.org/api/patches/104561/comments/",
    "check": "success",
    "checks": "http://patchwork.dpdk.org/api/patches/104561/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@inbox.dpdk.org",
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        "Received": [
            "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id D32F8A0C45;\n\tMon, 22 Nov 2021 10:04:49 +0100 (CET)",
            "from [217.70.189.124] (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 91E21410E8;\n\tMon, 22 Nov 2021 10:04:49 +0100 (CET)",
            "from mga03.intel.com (mga03.intel.com [134.134.136.65])\n by mails.dpdk.org (Postfix) with ESMTP id CE4DA4014E\n for <dev@dpdk.org>; Mon, 22 Nov 2021 10:04:47 +0100 (CET)",
            "from orsmga008.jf.intel.com ([10.7.209.65])\n by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;\n 22 Nov 2021 01:04:46 -0800",
            "from dpdk-xuanding-dev2.sh.intel.com ([10.67.119.250])\n by orsmga008.jf.intel.com with ESMTP; 22 Nov 2021 01:04:44 -0800"
        ],
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        ],
        "X-ExtLoop1": "1",
        "From": "Xuan Ding <xuan.ding@intel.com>",
        "To": "maxime.coquelin@redhat.com,\n\tchenbo.xia@intel.com",
        "Cc": "dev@dpdk.org, jiayu.hu@intel.com, yinan.wang@intel.com,\n xingguang.he@intel.com, Xuan Ding <xuan.ding@intel.com>",
        "Subject": "[PATCH] doc: update recommended IOVA mode for async vhost",
        "Date": "Mon, 22 Nov 2021 08:49:48 +0000",
        "Message-Id": "<20211122084948.39382-1-xuan.ding@intel.com>",
        "X-Mailer": "git-send-email 2.17.1",
        "X-BeenThere": "dev@dpdk.org",
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        "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"
    },
    "content": "DPDK 21.11 adds vfio support for DMA device in vhost. This patch\nupdates recommended IOVA mode in async datapath.\n\nSigned-off-by: Xuan Ding <xuan.ding@intel.com>\n---\n doc/guides/prog_guide/vhost_lib.rst | 9 +++++++++\n 1 file changed, 9 insertions(+)",
    "diff": "diff --git a/doc/guides/prog_guide/vhost_lib.rst b/doc/guides/prog_guide/vhost_lib.rst\nindex 76f5d303c9..f72ce75909 100644\n--- a/doc/guides/prog_guide/vhost_lib.rst\n+++ b/doc/guides/prog_guide/vhost_lib.rst\n@@ -442,3 +442,12 @@ Finally, a set of device ops is defined for device specific operations:\n * ``get_notify_area``\n \n   Called to get the notify area info of the queue.\n+\n+Recommended IOVA mode in async datapath\n+---------------------------------------\n+\n+When DMA devices are bound to vfio driver, VA mode is recommended.\n+For PA mode, page by page mapping may exceed IOMMU's max capability,\n+better to use 1G guest hugepage.\n+\n+For uio driver, any vfio related error message can be ignored.\n\\ No newline at end of file\n",
    "prefixes": []
}