Chapter 4: UEFI BIOS
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*
If the feature above is set to Enable, the five features below will be available
for configuration:
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.
Coherency Support (Non-Isoch)
Use this feature to maintain setting coherency between processors or other devices.
Select Enable for the Non-Isoch VT-d engine to pass through DMA to enhance system
performance. The options are
Enable
and Disable.
Intel® VMD Technology
Note
: After you’ve enabled VMD on a PCI-E slot of your choice, this PCI-E slot will be
dedicated for NVMe storage devices use only, and it will no longer support PCI-E de-
vices of other functionalities. To re-activate this slot for PCI-E use, please disable VMD.
Intel
®
VMD for Volume Management Device on CPU
VMD Config for PStack0
Intel® VMD for Volume Management Device
Select Enable to use the Intel Volume Management Device Technology for this stack.
The options are
Disable
and Enable.
*If the feature "Intel VMD for Volume Management Device" above is set to En-
able, the following features will be available for configuration:
