SR-IOV Windows Server 2012 R2

Important Issues in Windows Server 2012

https://technet.microsoft.com/en-us/library/jj134216.aspx

A BIOS update may be required for some computers to install the Hyper-V Role and/or start Hyper-V virtual machines

https://support.microsoft.com/en-us/kb/2762297

Intel® Virtualization Technology for Directed I/O (VT-d): Enhancing Intel platforms for efficient virtualization of I/O devices

https://software.intel.com/en-us/articles/intel-virtualization-technology-for-directed-io-vt-d-enhancing-intel-platforms-for-efficient-virtualization-of-io-devices/

SR-IOV

http://pcisig.com/specifications/iov/ats