CONFIG_LIQUIDIO_VF is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT

Cavium LiquidIO VF support

modulename: liquidio_vf.ko


Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>Cavium LiquidIO VF support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This driver supports Cavium LiquidIO Intelligent Server Adapter
based on CN23XX chips.

To compile this driver as a module, choose M here: The module
will be called liquidio_vf. MSI-X interrupt support is required
for this driver to work correctly

source code: