Intel Directed IO

Intel Directed IO

The following table lists the Intel directed IO BIOS settings that you can configure through a BIOS policy or the default BIOS settings:

Name

Description

Supported Attributes

Versions

Platforms

Values

Dependencies

Intel VT for directed IO

Whether the processor uses Intel Virtualization Technology for Directed I/O (VT-d).

4.1(1) and later

B200 M5, B480 M5, C220 M5, C240 M5, C480 M5, S3260 M5, B200 M6, C220 M6, C240 M6, X210c M6, C220 M7, C240 M7, X210c M7, X410c M7

Enabled, Disabled

  • Disabled—The processor does not use virtualization technology.

  • Enabled—The processor uses virtualization technology.

Intel(R) VT-d Coherency Support

Whether the processor supports Intel VT-d Coherency.

4.1(1) and later

B200 M5, B480 M5, C220 M5, C240 M5, C480 M5, S3260 M5, B200 M6, C220 M6, C240 M6, X210c M6, C220 M7, C240 M7, X210c M7, X410c M7

Enabled, Disabled

  • Disabled—The processor does not support coherency.

  • Enabled—The processor uses VT-d Coherency as required.

Intel VTD ATS Support

Whether the processor supports Intel VT-d Address Translation Services (ATS).

4.1(1) and later

B200 M5, B480 M5, C220 M5, C240 M5, C480 M5, S3260 M5, B200 M6, C220 M6, C240 M6, X210c M6

Disabled, Enabled

  • Disabled—The processor does not support ATS.

  • Enabled—The processor uses VT-d ATS as required.

PreBoot DMA Protection

 The BIOS setting that aims to prevent unauthorized Direct Memory Access (DMA) during the boot process, potentially protecting against malicious devices from gaining access to system memory.

4.3(6a)

C220 M8, C240M8, X210c M8

Disabled, Enabled

  • Disabled

    ——Options are Disabled.

  • Enabled

    ——Options are Enabled.