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Chapter 2
Installation and BIOS Setup
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 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
.
Interrupt Remapping
Select
Enable
for Interrupt Remapping support to enhance system performance. The options are
Enable
and
Disable
.
Coherency Support (Non-Isoch)
Select
Enable
for the Non-Iscoh VT-d engine to pass through DMA (Direct Memory Access) to
enhance system performance. The options are
Enable
and
Disable
.
Coherency Support (Isoch)
Select
Enable
for the Iscoh VT-d engine to pass through ATS to enhance system performance.
The options are
Enable
and
Disable
.
QPI (Quick Path Interconnect) Configuration
QPI Status
The following information will display:
•
Number of CPU
•
Number of IIO
•
Current QPI Link Speed
•
Current QPI Link Frequency
•
QPI Global MMIO Low Base/Limit
•
QPI Global MMIO High Base/Limit
•
QPI PCIe Configuration Base/Size
Link Speed Mode
Use this item to select the data transfer speed for QPI Link connections. The options are
Fast
and
Slow
.
Link Frequency Select
Use this item to select the desired frequency for QPI Link connections. The options are
6.4 GB/s,
8.0 GB/s, 9.6 GB/s,
Auto
, and
Auto Limited
.