Which BIOS setting is required for a VMware ESXi 5.0 host to support Cisco VM-FEX universal pasthrough mode?

Cisco recommend that you create a named BIOS policy as VMwarePassThru so that you can identify it as being used for VM-FEX in high-performance mode.

You must enable these specific parameters in the following BIOS settings:
• Processor—Enable Virtual Technology (VT) and Direct Cache Access.

You must enable VT if you intend to run 64-bit VMs on the ESX/ESXi host. An
ESX/ESXi host will not run 64-bit VMs unless VT is enabled

For directed IO – Cisco recommend the following parameters are set

◦VT for Directed IO
◦Interrupt Remap
◦Coherency Support
◦ATS Support
◦Pass Through DMA Support

see

http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/sw/vm_fex/vmware/gui/config_guide/b_GUI_VMware_VM-FEX_UCSM_Configuration_Guide.pdf

so A look correct