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From: Andy Burns on 17 Jun 2008 18:58
Anyone know if VT-d is enabled in any BIOS releases on the P5E-WS-PRO board?
From: Paul on 17 Jun 2008 19:48
Andy Burns wrote:
> Anyone know if VT-d is enabled in any BIOS releases on the P5E-WS-PRO
> board?

In the manual for the motherboard, there is a "Vanterpool"
setting. (In the "CPU Configuration" BIOS screen, section 4.5.1)
But you're asking for another level of refinement, mentioned here.

http://en.wikipedia.org/wiki/VT-d#Intel_VT_.28IVT.29

"Intel plans to add a technology named Virtualization for Directed I/O
(VT-d) to VT. This provides a way of configuring interrupt delivery to
individual virtual machines and an IOMMU for preventing a virtual
machine from using DMA to break isolation."

You can download the X38 datasheet here, which is your Northbridge.

http://www.intel.com/design/chipsets/datashts/317610.htm

On PDF page 94, VT-d is a Read-Only attribute, and is Enabled.

48 RO 0b VT-d Disable (VTDD):
0 = Enable VT-d
1 = Disable VT-d

So it would appear from that, to be enabled. I suppose there could be
a bitfield somewhere else, that overrides it. You'd need more documentation
from somewhere, to understand what hardware components are needed to support
it. (Like, where or what is used for the IOMMU ?)

Paul
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