[tboot-devel] LT.ERRORCODE = c00004f1

[Younghwan Go <yh...@ka...>]

 Hi.
I was working with TXT and got a SINIT error.
The LT.ERRORCODE is c00004f1.
According to this, progress value is 0fh and errorcode is 1.
This means that it's VT-d remap engine enabled.
I have iommu=on on the boot menu.
Can you tell me how I should do this? Should I delete iommu=on from the
boot menu?
Thanks.

Younghwan Go

2010-08-17 오후 2:38, Cihula, Joseph 쓴 글:
>
> You need to specify ‘iommu=on’ on the kernel command line---tboot is
> DMA protecting memory and the kernel needs to enable VT-d to open the
> DMA buffers. You should also be using a kernel built with
> CONFIG_INTEL_TXT.
>
> Joe
>