Supermicro X11SPi-TF User Manual page 85

Chapter 4: BIOS
Prioritize TPH
Use this feature to enable Prioritize TPH support. The options are Enable and Disable.
Relaxed Ordering
Select Enable to enable Relaxed Ordering support, which will allow certain transac-
tions to violate the strict-ordering rules of PCI bus for a transaction to be completed
prior to other transactions that have already been enqueued. The options are Disable
and Enable.
Intel® VT for Directed I/O (VT-d)

Intel VT for Directed I/O (VT-d)
®
Select Enable to use Intel Virtualization Technology for Direct I/O VT-d support by
reporting the I/O device assignments to the VMM (Virtual Machine Monitor) through
the DMAR ACPI tables. This feature offers fully-protected I/O resource sharing across
Intel platforms, providing greater reliability, security and availability in networking and
data-sharing. The options are Enable and Disable.
ACS Control (Available when the item: Intel VT for Directed I/O (VT-d)) is set to
Enable)
Use this feature to program Access Control Services (ACS) to the PCI-e Root Port
Bridges. The options are Enable and Disable.
Interrupt Remapping
Use this feature to enable Interrupt Remapping support, which detects and controls
external interrupt requests. The options are Enable and Disable.
PassThrough DMA
Use this feature to allow devices such as network cards to access the system memory
without using a processor. Select Enable to use the Non-Isoch VT_D Engine Pass
Through Direct Memory Access (DMA) support. The options are Enable and Disable.
ATS
Use this feature to enable Non-Isoch VT-d Engine Address Translation Services (ATS)
support. ATS translates virtual addresses to physical addresses. The options are En-
able and Disable.
Posted Interrupt
Use this feature to enable VT_D Posted Interrupt. The options are Enable and Disable.
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