[dpdk-dev] X520 virtual functions worked in 2.0 but fails in 2.1

[Jesper Wramberg <jesper.wramberg@gmail.com>]

Hi all,

I got a Dell PowerEdge R630 with an X520 NIC. I want to set up two VFs that
use the first port on the NIC. I've done the following:

1. Edited kernel params to include iommu=pt and intel_iommu=1

2. Executed the following
modprobe uio
insmod igb_uio
./dpdk_nic_bind.py -b igb_uio bb:ss.f
echo 2 > /sys/bus/pci/devices/0000\:bb\:ss.f/max_vfs

3. Compiled DPDK 2.0, DPDK 2.1 and the hello world example against both
versions

4. Attempted to run the hello world examples.

When running with DPDK 2.0 everything works fine and I get 3 ports (2 vfs +
1 pf).
When running with DPDK 2.1 i get:

EAL: PCI device 0000:03:10.0 on NUMA socket 0
EAL:   probe driver: 8086:10ed rte_ixgbevf_pmd
EAL:   PCI memory mapped at 0x7f08c0108000
EAL:   PCI memory mapped at 0x7f08c010c000
PMD: eth_ixgbevf_dev_init():  >>
PMD: ixgbevf_intr_disable():  >>
PMD: eth_ixgbevf_dev_init(): VF Initialization Failure: -100
PMD: rte_eth_dev_init: driver rte_ixgbevf_pmd:
eth_dev_init(vendor_id=0x32902 device_id=0x10ed) failed
EAL: Error - exiting with code: 1
  Cause: Requested device 0000:03:10.0 cannot be used


Can't seem to figure out what I'm doing wrong here.