Re: [PATCH 4/4] pci/dmar: Tone down warnings about invalid BIOS DMARtables

[David Woodhouse]

On Sun, 21 Mar 2010, Ben Hutchings wrote:

> Are you saying that these bogus tables are found on boards that do have
> VT-d hardware?  I was working on the assumption that these tables result
> from the OEM building a BIOS with VT-d support for a board where the
> hardware is not present.

Yes. Most of these boards have VT-d but can't use it because the BIOS 
vendors fucked up and never once booted a VT-d-capable OS to test it. (And 
because the spec is bloody stupid and relies on BIOS tables rather than 
enumerating through PCI or something like that).

--
dwmw2

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