From mboxrd@z Thu Jan 1 00:00:00 1970 From: David White Subject: SR-IOV problems - HVM cannot access network Date: Tue, 01 Mar 2011 11:31:47 -0800 Message-ID: <4D6D49A3.90902@speakeasy.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Hi all, I am having problems getting SR-IOV functions to work in my HVMs. My hardware has VT-d support, and pci passthrough works fine for physical functions. In a nutshell here is the current state: Dom0 : NICs are 2-port 82576. I can get full network access using either PF or VF interfaces. HVM : PCI passthrough of physical functions work -- full network access HVM : PCI passthrough of virtual functions fail -- can send pkts but cannot receive. The best lead I have right now is evident from the qemu logs. when PF (04:00.0) is assigned to HVM: pt_msix_init: get MSI-X table bar base fafbc000 pt_msix_init: table_off = 0, total_entries = 10 pt_msix_init: errno = 2 pt_msix_init: mapping physical MSI-X table to 7f23a03d5000 pt_msi_setup: msi mapped with pirq 37 pci_intx: intx=1 register_real_device: Real physical device 04:00.0 registered successfuly! IRQ type = MSI-INTx when VF (04:10.2) is assigned to HVM: pt_msix_init: get MSI-X table bar base fae24000 pt_msix_init: table_off = 0, total_entries = 3 pt_msix_init: errno = 2 pt_msix_init: mapping physical MSI-X table to 7fc918846000 register_real_device: Real physical device 04:10.2 registered successfuly! IRQ type = INTx VFs don't seem to be using MSI/MSI-X interupts. Does this indicate a problem? Can anyone give some insight on this? thanks - david