
3-13
BIOS Setup
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MS-91E2
Intel(R) VT for Directed I/O Conguration
Intel(R) VT-d
Intel Virtualization Technology for Directed I/O (Intel VT-d) provides the ca
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pability to ensure improved isolation of I/O resources for greater reliability,
security, and availability.
Interrupt Remapping
Intel VT-d interrupt remapping allows for reductions in interrupt virtualiza
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tion overhead for assigned devices. Interrupt requests specify a requester-
ID and interrupt-ID, and remap hardware transforms these requests to a
physical interrupt, using a software-programmed Interrupt Remap Table
structure in memory.
Coherency Support
This setting indicates if hardware access to the root, context, page-table
and interrupt-remap structures are coherent (snooped) or not.
ATS Support
This setting enables/disables the ATS (Address Translation Service) sup
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port for the Intel IOMMU.
Pass-through DMA
This setting enables/disables the pass-through DMA function.
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