User Manual

Chapter 5: BIOS Setup
5-54
Intel® VT for Directed I/O (VT-d)
Intel(R) VT for Directed I/O (VT-d) [Enable]
Allows you to enable or disable the Intel Virtualization Technology for Directed I/O (VT-
d) by reporting the I/O device assignment to VMM through DMAR ACPI Tables.
Conguration options: [Disable] [Enable]
Intel® VMD technology
Intel
®
VMD for Volume Management Device on Socket 0
VMD Config for PCH ports
Enable/Disable VMD [Disable]
Allows you to enable or disable VMD in this Stack.
Conguration options: [Disable] [Enable]
The following items appear only when
Enable/Disable VMD
is set to
[Enable]
.
PCH Root Port 0-19 [Disable]
Allows you to congure PCH root port. Setting this item to
[Enable]
will set
to VMD ownership root port.
Conguration options: [Disable] [Enable]
Hot Plug Capable [Disable]
Allows you to enable or disable Hot Plug for PCIe Root Ports.
Conguration options: [Disable] [Enable]
CfgBar size [25]
Allows you to setup VMD Cong BAR size (in bits Min=20, Max=27), e.g.
20bits=1MB, 27bits=128MB.
Conguration options: [20] - [27]
CfgBar attribute [64-bit prefetchable]
Allows you to setup VMD Cong BAR attribute, like 64-bit or prefetchable.
Conguration options: [32-bit non-prefetchable] [64-bit non-prefetchable]
[64-bit prefetchable]
MemBar1 size [25]
Allows you to setup VMD Memory BAR1 size (in bits Min=20), e.g.
20bits=1MB, 22bits=4MB, 26bits=64MB.
Conguration options: [20] - [39]
MemBar1 attribute [32-bit non-prefetchable]
Allows you to setup VMD Memory BAR1 attribute, like 64-bit or
prefetchable.
Conguration options: [32-bit non-prefetchable] [64-bit non-prefetchable]
[64-bit prefetchable]
MemBar2 size [20]
Allows you to setup VMD Memory BAR2 size (in bits Min=20), e.g.
20bits=1MB, 22bits=4MB, 26bits=64MB.
Conguration options: [20] - [39]
MemBar2 attribute [64-bit non-prefetchable]
Allows you to setup VMD Memory BAR2 attribute, like 64-bit or
prefetchable.
Conguration options: [32-bit non-prefetchable] [64-bit non-prefetchable]
[64-bit prefetchable]