How to configure SR-IOV function in RHEL7?

Solution In Progress - Updated -

Issue

  • How to configure SR-IOV function in RHEL7?
  • How to initialize virtual function in SR-IOV capable hardware in RHEL7?
  • Is it possible to use SR-IOV function directly with the host hypervisior?
  • The message write error: Cannot allocate memory is returned when creating VFs, for example:
# echo 8 > /sys/class/net/<interface>/device/sriov_numvfs
-bash: echo: write error: Cannot allocate memory

Environment

  • Red Hat Enterprise Linux (RHEL)7.1.
  • intel ixgbe based NICs.
  • Intel Corporation 10 Gigabit BR KX4 Dual Port Network adapters.

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