Supermicro X13DGU User Manual page 120

Super X13DGU User's Manual
Pre-boot DMA (Direct Memory Access) Protection
Select Enable to enable DMA protection support in the pre-boot environment, which is
available when the DMAR table is installed in the DXE (Driver Execution Environment),
and the VID_INF0_PPI is installed in PEI. The options are Enable and Disable.
Interrupt Remapping (Available when "Intel® VT for Directed I/O (VT-d)" is set to
Enable)
Select Enable to support I/O DMA transfer remapping and device-generated interrupts.
The options are Auto, Enable, and Disable.
PCIe ACSCTL (Available when "Intel® VT for Directed I/O (VT-d)" is set to
Enable)
Select Enable to program ACS control to Chipset PCIe Root Port bridges. Select Dis-
able to program ACS control to all PCIe Root Port bridges. The options are Disable and
Enable.
Opt-Out Illegal MSI Mitigation (Available when "Intel VT for Directed I/O (VT-d)"
is set to Enable)
If this feature is set to Enable, "Illegal OxzFEE Platform Mitigation" will be opted out. The
options are Enable and Disable.
Intel VMD Technology

This section describes the configuration settings for the Intel VMD technology.
Note 1: After you've enabled VMD in the BIOS on a PCIe slot, this PCIe slot will be
dedicated for VMD use only, and it will no longer support any PCIe device. To re-activate
this slot for PCIe use, please disable VMD in the BIOS.
Note 2: The number of PCIe slots and the slot naming can differ depending on the
PCIe devices connected to your motherboard.
NVMe Mode Switch
When this feature is set to Auto, VMD support will be automatically enabled when a VROC
key is detected by the BIOS. The options are Manual, VMD, and Auto.
Intel VMD for Volume Management Device on Socket 0 (CPU1)

(Available when "NVMe Mode Switch" is set to Manual)
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