From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Assmann Subject: Re: [Qemu-devel] PCI passthrough of 40G ethernet interface (Openstack/KVM) Date: Mon, 23 Mar 2015 08:19:12 +0100 Message-ID: <550FBE70.40201@redhat.com> References: <550A85B3.4070703@redhat.com> <550ADAD2.8070506@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: Shannon Nelson , Bandan Das , Alex Williamson , QEMU Developers , kvm-devel , netdev@vger.kernel.org To: jacob jacob Return-path: In-Reply-To: Sender: kvm-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On 20.03.2015 21:55, jacob jacob wrote: > On Thu, Mar 19, 2015 at 10:18 AM, Stefan Assmann wrote: >> On 19.03.2015 15:04, jacob jacob wrote: >>> Hi Stefan, >>> have you been able to get PCI passthrough working without any issues >>> after the upgrade? >> >> My XL710 fails to transfer regular TCP traffic (netperf). If that works >> for you then you're already one step ahead of me. Afraid I can't help >> you there. > > I have data transfer working when trying the test runs on the host > itself. Are you seeing problems when directly trying the TCP traffic > from the host itself? Correct. > The issues that i am seeing are specific to the case when the devices > are passed via PCI passthrough into the VM. > > Any ideas whether this would be a kvm/qemu or i40e driver issue? > (Updating to the latest firmware and using latest i40e driver didn't > seem to help.) Hard to say, that's probably something for Intel to look into. Stefan From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35787) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YZwdv-0006Rs-Qe for qemu-devel@nongnu.org; Mon, 23 Mar 2015 03:19:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YZwdo-0005Sa-Fi for qemu-devel@nongnu.org; Mon, 23 Mar 2015 03:19:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56472) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YZwdo-0005SC-Aw for qemu-devel@nongnu.org; Mon, 23 Mar 2015 03:19:16 -0400 Message-ID: <550FBE70.40201@redhat.com> Date: Mon, 23 Mar 2015 08:19:12 +0100 From: Stefan Assmann MIME-Version: 1.0 References: <550A85B3.4070703@redhat.com> <550ADAD2.8070506@redhat.com> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] PCI passthrough of 40G ethernet interface (Openstack/KVM) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: jacob jacob Cc: kvm-devel , netdev@vger.kernel.org, Shannon Nelson , Alex Williamson , QEMU Developers , Bandan Das On 20.03.2015 21:55, jacob jacob wrote: > On Thu, Mar 19, 2015 at 10:18 AM, Stefan Assmann wrote: >> On 19.03.2015 15:04, jacob jacob wrote: >>> Hi Stefan, >>> have you been able to get PCI passthrough working without any issues >>> after the upgrade? >> >> My XL710 fails to transfer regular TCP traffic (netperf). If that works >> for you then you're already one step ahead of me. Afraid I can't help >> you there. > > I have data transfer working when trying the test runs on the host > itself. Are you seeing problems when directly trying the TCP traffic > from the host itself? Correct. > The issues that i am seeing are specific to the case when the devices > are passed via PCI passthrough into the VM. > > Any ideas whether this would be a kvm/qemu or i40e driver issue? > (Updating to the latest firmware and using latest i40e driver didn't > seem to help.) Hard to say, that's probably something for Intel to look into. Stefan