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GET /api/patches/108652/?format=api
{ "id": 108652, "url": "http://patchwork.dpdk.org/api/patches/108652/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/patch/20220310123843.612207-9-bruce.richardson@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", "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": "<20220310123843.612207-9-bruce.richardson@intel.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20220310123843.612207-9-bruce.richardson@intel.com", "date": "2022-03-10T12:38:43", "name": "[v2,8/8] doc/linux_gsg: remove section on IOMMU pass-through", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "3a1b3f2b423f508bc06fa197313cb6478e27cd30", "submitter": { "id": 20, "url": "http://patchwork.dpdk.org/api/people/20/?format=api", "name": "Bruce Richardson", "email": "bruce.richardson@intel.com" }, "delegate": { "id": 1, "url": "http://patchwork.dpdk.org/api/users/1/?format=api", "username": "tmonjalo", "first_name": "Thomas", "last_name": "Monjalon", "email": "thomas@monjalon.net" }, "mbox": "http://patchwork.dpdk.org/project/dpdk/patch/20220310123843.612207-9-bruce.richardson@intel.com/mbox/", "series": [ { "id": 22099, "url": "http://patchwork.dpdk.org/api/series/22099/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=22099", "date": "2022-03-10T12:38:35", "name": "Linux GSG doc updates", "version": 2, "mbox": "http://patchwork.dpdk.org/series/22099/mbox/" } ], "comments": "http://patchwork.dpdk.org/api/patches/108652/comments/", "check": "success", "checks": "http://patchwork.dpdk.org/api/patches/108652/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 mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id B88F8A0093;\n\tThu, 10 Mar 2022 13:39:44 +0100 (CET)", "from [217.70.189.124] (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id B36144117E;\n\tThu, 10 Mar 2022 13:39:08 +0100 (CET)", "from mga06.intel.com (mga06.intel.com [134.134.136.31])\n by mails.dpdk.org (Postfix) with ESMTP id 9B9CD41174\n for <dev@dpdk.org>; Thu, 10 Mar 2022 13:39:06 +0100 (CET)", "from orsmga006.jf.intel.com ([10.7.209.51])\n by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;\n 10 Mar 2022 04:39:06 -0800", "from silpixa00399126.ir.intel.com ([10.237.223.34])\n by orsmga006.jf.intel.com with ESMTP; 10 Mar 2022 04:39:04 -0800" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple;\n d=intel.com; i=@intel.com; q=dns/txt; s=Intel;\n t=1646915946; x=1678451946;\n h=from:to:cc:subject:date:message-id:in-reply-to:\n references:mime-version:content-transfer-encoding;\n bh=nqBLrMNyJ8B7PyuffDytONet+I9HomPfqQlOU4phDmM=;\n b=YieJphlBdOi896n7ikmKpr/FPO15xaW4fOoNvy9aX8LNO4DTd9FqcMoA\n jYaKlgCez2/x4n7ZSzAqrYbudgfHuatbu7eLkO3NInA2luKaIhgRWtOvW\n +kBos71OEdz0aYleYTqyIgREM8DMpx+HS2o2THf5TLMZMxAVxoBmcb0/v\n IiPaThP62G9FZyJ3OKYgzW77znOrx4YJVci3Cx15Y2fgPwsyJTYOJ6npA\n 1z8f0KLt7yJXQ+KkHnuueRggMQEa/6cO+TrP2M2/wdErSn4KSSW3WGpZE\n uyTsIscMDlQG64E22WGXDrjJdPsOkVgSOEy4jQiRulxytu9YT4xzvElDA A==;", "X-IronPort-AV": [ "E=McAfee;i=\"6200,9189,10281\"; a=\"315957629\"", "E=Sophos;i=\"5.90,170,1643702400\"; d=\"scan'208\";a=\"315957629\"", "E=Sophos;i=\"5.90,170,1643702400\"; d=\"scan'208\";a=\"513970251\"" ], "X-ExtLoop1": "1", "From": "Bruce Richardson <bruce.richardson@intel.com>", "To": "dev@dpdk.org", "Cc": "john.mcnamara@intel.com,\n\tBruce Richardson <bruce.richardson@intel.com>", "Subject": "[PATCH v2 8/8] doc/linux_gsg: remove section on IOMMU pass-through", "Date": "Thu, 10 Mar 2022 12:38:43 +0000", "Message-Id": "<20220310123843.612207-9-bruce.richardson@intel.com>", "X-Mailer": "git-send-email 2.32.0", "In-Reply-To": "<20220310123843.612207-1-bruce.richardson@intel.com>", "References": "<20220308145001.529734-1-bruce.richardson@intel.com>\n <20220310123843.612207-1-bruce.richardson@intel.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "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": "The \"Linux Drivers\" section of the GSG already notes that, for use of\nUIO, the IOMMU must be disabled or put into pass-through mode.\nTherefore, there is no need to duplicate this information in the\n\"additional functionality\" section. Also the kernel configuration\noptions documented in the section are enabled as standard on all common\ndistro kernels, so the information should not be needed in a GSG doc.\n\nSigned-off-by: Bruce Richardson <bruce.richardson@intel.com>\n---\n doc/guides/linux_gsg/enable_func.rst | 19 -------------------\n doc/guides/linux_gsg/linux_drivers.rst | 2 +-\n 2 files changed, 1 insertion(+), 20 deletions(-)", "diff": "diff --git a/doc/guides/linux_gsg/enable_func.rst b/doc/guides/linux_gsg/enable_func.rst\nindex 1f19842ddc..338c33290b 100644\n--- a/doc/guides/linux_gsg/enable_func.rst\n+++ b/doc/guides/linux_gsg/enable_func.rst\n@@ -127,22 +127,3 @@ it is recommended that the ``rte_get_timer_cycles()`` and ``rte_get_timer_hz()``\n These generic APIs can work with either TSC or HPET time sources,\n depending on what is requested by an application call to ``rte_eal_hpet_init()``,\n if any, and on what is available on the system at runtime.\n-\n-Using Linux IOMMU Pass-Through to Run DPDK with Intel\\ |reg| VT-d\n-------------------------------------------------------------------\n-\n-To enable Intel\\ |reg| VT-d in a Linux kernel, a number of kernel configuration options must be set. These include:\n-\n-* ``IOMMU_SUPPORT``\n-\n-* ``IOMMU_API``\n-\n-* ``INTEL_IOMMU``\n-\n-In addition, to run the DPDK with Intel\\ |reg| VT-d, the ``iommu=pt`` kernel parameter must be used when using ``igb_uio`` driver.\n-This results in pass-through of the DMAR (DMA Remapping) lookup in the host.\n-Also, if ``INTEL_IOMMU_DEFAULT_ON`` is not set in the kernel, the ``intel_iommu=on`` kernel parameter must be used too.\n-This ensures that the Intel IOMMU is being initialized as expected.\n-\n-Please note that while using ``iommu=pt`` is compulsory for ``igb_uio`` driver,\n-the ``vfio-pci`` driver can actually work with both ``iommu=pt`` and ``iommu=on``.\ndiff --git a/doc/guides/linux_gsg/linux_drivers.rst b/doc/guides/linux_gsg/linux_drivers.rst\nindex 03cf264a0a..2e4c80ebd3 100644\n--- a/doc/guides/linux_gsg/linux_drivers.rst\n+++ b/doc/guides/linux_gsg/linux_drivers.rst\n@@ -367,7 +367,7 @@ It can be loaded as shown below:\n \n .. note::\n \n- If the devices used for DPDK are bound to the ``uio_pci_generic`` kernel module,\n+ If the devices used for DPDK are bound to a UIO-based kernel module,\n please make sure that the IOMMU is disabled or is in passthrough mode.\n One can add ``intel_iommu=off`` or ``amd_iommu=off`` or ``intel_iommu=on iommu=pt``\n in GRUB command line on x86_64 systems,\n", "prefixes": [ "v2", "8/8" ] }