From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 0E287A04BA; Thu, 17 Sep 2020 11:35:20 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id E05F71D5CF; Thu, 17 Sep 2020 11:35:19 +0200 (CEST) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id D75F01D5C7 for ; Thu, 17 Sep 2020 11:35:18 +0200 (CEST) IronPort-SDR: LsHjrgE8Gv1RA4Q6RnfikBZzCgf2uxGRAzYmvgRpQlNDsdEFfx+DfWHfgomLWZTOuF1SFLtoNU JoQsbYssVSoQ== X-IronPort-AV: E=McAfee;i="6000,8403,9746"; a="147410679" X-IronPort-AV: E=Sophos;i="5.76,436,1592895600"; d="scan'208";a="147410679" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Sep 2020 02:35:17 -0700 IronPort-SDR: Xe5Mk2lBAp5LJmDRbu0NBcySQ/IyLu/F70vzV5RvuxP7DeYOu+Y22cbo5t4txk6yR7oLoS55xu AF184ah8rAvg== X-IronPort-AV: E=Sophos;i="5.76,436,1592895600"; d="scan'208";a="483671542" Received: from joanneby-mobl.ger.corp.intel.com (HELO [10.213.206.43]) ([10.213.206.43]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Sep 2020 02:35:16 -0700 To: Sarosh Arif , Bruce Richardson Cc: dev@dpdk.org References: <20200917091723.GD1568@bricha3-MOBL.ger.corp.intel.com> From: "Burakov, Anatoly" Message-ID: <9009b751-c6fa-7195-368b-ed7a1d2c91f5@intel.com> Date: Thu, 17 Sep 2020 10:35:14 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] unable to bind to vfio-pci 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 17-Sep-20 10:21 AM, Sarosh Arif wrote: > On Thu, Sep 17, 2020 at 2:17 PM Bruce Richardson > wrote: >> >> On Thu, Sep 17, 2020 at 11:52:58AM +0500, Sarosh Arif wrote: >>> I have been trying to bind to vfio-pci using usertools/dpdk-devbind.py >>> but am unable to do so. The reason behind this is that I am unable to >>> write in /sys/bus/pci/drivers/vfio-pci/bind. Upon searching solutions >>> I tried a couple of things such as setting iommu=pt and intel_iommu=on >>> and ensured vt-d is enabled. >>> Along with this I have made sure that the vfio-pci module is correctly >>> loaded. I have also tried >>> >>> chmod 666 /sys/bus/pci/drivers/vfio-pci/bind >>> >>> So that I have permissions to write in this file. >>> >>> The error I get when I use usertools/dpdk-devbind.py to bind is this: >>> Error: bind failed for 0000:b7:00.1 - Cannot bind to driver vfio-pci >>> >>> The details of 0000:b7:00.1 are as follows: >>> Ethernet Connection X722 for 10GBASE-T 37d2' if=eno6 drv=i40e >>> >>> I have also unbinded The pci bridge to which 0000:b7:00.1 was connected. >>> >>> What more can be done to resolve this? >>> >> Since you describe changing permissions on the "bind" file, are you trying >> to run dpdk-devbind.py as a non-root user? Does it work as root? > I am running it as a root user. It does not work as a root user. > Does "dmesg | tail" say anything of interest? -- Thanks, Anatoly