Chapter 6: UEFI BIOS
99
IOAT (Intel® IO Acceleration) Conguration
Disable TPH
Select Yes to deactivate TLP Processing Hint support. The options are No and Yes.
Prioritize TPH
Use this feature to enable the prioritize TPH support. The options are Enable and
Disable.
Relaxed Ordering
Select Enable to enable Relaxed Ordering support which will allow certain transactions
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 support for Direct I/O VT-d support
by reporting the I/O device assignments to the VMM (Virtual Machine Monitor) through
Intel® platforms, providing greater reliability, security and availability in networking and
data-sharing. The options are Enable and Disable.
*If the item above is set to Enable, the following items will be available:
Interrupt Remapping
Select Enable for Interrupt Remapping support to enhance system performance. The
options are Enable and Disable.
PassThrough DMA
Select Enable to use the Non-Isoch VT_D engine pass through DMA support. The
options are Enable and Disable.
ATS
Select Enable to use the Non-Isoch VT_D engine ATS support. The options are En-
able and Disable.
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