Issue

When allocating a pci device (Intel Corporation 82571EB Gigabit Ethernet Controller) to a KVM host using PCI passthrough, the following error occurs when one try to configure the network card:

[root@RHCL1_A1 ~]# eth0: Detected Tx Unit Hang:
  TDH                  <2>
  TDT                  <2>
  next_to_use          <2>
  next_to_clean        <0>
buffer_info[next_to_clean]:
  time_stamp           <10011a0a6>
  next_to_watch        <0>
  jiffies              <10011bdd0>
  next_to_watch.status <0>