Intel P4000RP Technical Product Specification - Page 121
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Intel® Server Board S1200V3RP BIOS Setup Interface Back to [Advanced Screen] - [Screen Map] 18. Intel(R) VT for Directed I/O Option Values: Enabled Disabled Help Text: Enable/Disable Intel (R) Virtualization Technology for Directed I/O (Intel (R) VT-d). Report the I/O device assignment to VMM through DMAR ACPI Tables. Comments: This option is only visible if all processors installed in the system support Intel® VT-d. The software configuration installed on the system must support this feature in order for it to be enabled. Back to [Advanced Screen] - [Screen Map] 19. Interrupt Remapping Option Values: Enabled Disabled Help Text: Enable/Disable Intel (R) VT-d Interrupt Remapping support. For some processors, this option may be "always enabled". Comments: This option only appears when Intel® Virtualization Technology for Directed I/O is Enabled. For some processors this will be enabled unconditionally whenever Intel® VT-d is enabled. In that case, this option will be shown as "Enabled", and grayed out and not changeable. Back to [Advanced Screen] - [Screen Map] 20. Pass-through DMA Support Option Values: Enabled Disabled Help Text: Enable/Disable Intel (R) VT-d Pass-through DMA support. For some processors, this option may be "always enabled". Comments: This option only appears when Intel® Virtualization Technology for Directed I/O is Enabled. For some processors this will be enabled unconditionally Revision 1.0 109