From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id D396DDE0 for ; Tue, 18 Apr 2017 07:46:13 +0200 (CEST) Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Apr 2017 22:46:09 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.37,218,1488873600"; d="scan'208";a="90697408" Received: from dpdk7.bj.intel.com ([172.16.182.73]) by fmsmga005.fm.intel.com with ESMTP; 17 Apr 2017 22:46:08 -0700 From: Qiming Yang To: dev@dpdk.org Cc: bruce.richardson@intel.com, jingjing.wu@intel.com, Qiming Yang Date: Tue, 18 Apr 2017 13:36:21 +0800 Message-Id: <1492493781-33501-1-git-send-email-qiming.yang@intel.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH] doc: add VF support statement X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Apr 2017 05:46:14 -0000 This patch adds two note in doc build_dpdk, suggests DPDK user don't use ``vfio-pci`` and ``uio_pci_generic`` module to create virtual functions(VFs). Signed-off-by: Qiming Yang --- doc/guides/linux_gsg/build_dpdk.rst | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/doc/guides/linux_gsg/build_dpdk.rst b/doc/guides/linux_gsg/build_dpdk.rst index 9d24573..b79ca48 100644 --- a/doc/guides/linux_gsg/build_dpdk.rst +++ b/doc/guides/linux_gsg/build_dpdk.rst @@ -155,6 +155,10 @@ can provide the uio capability. This module can be loaded using the command sudo modprobe uio_pci_generic +.. note:: + + ``uio_pci_generic`` module doesn't support to create virtual functions. + As an alternative to the ``uio_pci_generic``, the DPDK also includes the igb_uio module which can be found in the kmod subdirectory referred to above. It can be loaded as shown below: @@ -187,6 +191,10 @@ however please consult your distributions documentation to make sure that is the Also, to use VFIO, both kernel and BIOS must support and be configured to use IO virtualization (such as Intel® VT-d). +.. note:: + + ``vfio-pci`` module doesn't support to create virtual functions. + For proper operation of VFIO when running DPDK applications as a non-privileged user, correct permissions should also be set up. This can be done by using the DPDK setup script (called dpdk-setup.sh and located in the usertools directory). -- 2.7.4