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Parameter
VT-d
Control Iommu Pre-boot Behavior
X2APIC Opt Out
CRID Support
WRC Feature
Above 4GB MMIO BIOS
assignment
Description
Enable/Disable VT-d capability.
Options available: Enabled, Disabled. Default setting is Enabled.
Enable/Disable IOMMU in Pre-boot environment.
Options available: Disable IOMMU, Enable IOMMU during boot.
Default setting is Enable IOMMU during boot.
Options available: Enabled, Disabled. Default setting is Disabled.
Enable/Disable SA CRID and TCSS CRID control for Intel SIPP.
Options available: Enabled, Disabled. Default setting is Disabled.
Enable/Disable SA WRC(Write Cache) feature of IOP.
Options available: Enabled, Disabled. Default setting is Disabled.
Enable/Disable the Above 4G Memory Mapped IO BIOS Assignment.
Options available: Enabled, Disabled. Default setting is Enabled
BIOS Setup
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