From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 602082C24 for ; Tue, 12 Mar 2019 10:38:31 +0100 (CET) X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Mar 2019 02:38:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,470,1544515200"; d="scan'208";a="326515289" Received: from bricha3-mobl.ger.corp.intel.com ([10.237.221.36]) by fmsmga006.fm.intel.com with SMTP; 12 Mar 2019 02:38:28 -0700 Received: by (sSMTP sendmail emulation); Tue, 12 Mar 2019 09:38:27 +0000 Date: Tue, 12 Mar 2019 09:38:27 +0000 From: Bruce Richardson To: Thanneeru Srinivasulu Cc: dev@dpdk.org Message-ID: <20190312093826.GA914268@bricha3-MOBL.ger.corp.intel.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.2 (2019-01-07) Subject: Re: [dpdk-dev] Query : Does Binding with vfio-pci is supported inside qemu-kvm guest/vm instance.? 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, 12 Mar 2019 09:38:31 -0000 On Tue, Mar 12, 2019 at 10:57:55AM +0530, Thanneeru Srinivasulu wrote: > Hi Everyone. > > I did attached pice to Guest VM using vfio-pci with qemu command, and then > tried binding the pcie bdf with vfio-pci, observing binding failure with > vfio-pci. > > Where as when tryied with igb_uio, everything works fine. > > Does Binding with vfio-pci is supported inside VM/guest? > vfio support requires the presence of an IOMMU, and you generally don't have an IOMMU available in a VM. /Bruce