Re: i915 dma faults on Xen

[Jason Andryuk <jandryuk@xxxxxxxxx>]

On Thu, Oct 15, 2020 at 12:39 PM Tamas K Lengyel
<tamas.k.lengyel@xxxxxxxxx> wrote:
>
> > > Can you paste the memory map as printed by Xen when booting, and what
> > > command line are you using to boot Xen.
> >
> > So this is OpenXT, and it's booting EFI -> xen -> tboot -> xen
>
> Unrelated comment: since tboot now has a PE build
> (http://hg.code.sf.net/p/tboot/code/rev/5c68f0963a78) I think it would
> be time for OpenXT to drop the weird efi->xen->tboot->xen flow and
> just do efi->tboot->xen. Only reason we did efi->xen->tboot was
> because tboot didn't have a PE build at the time. It's a very hackish
> solution that's no longer needed.

Thanks for the pointer, Tamas.  If I recall correctly, there was also
an issue with ExitBootServices.  Do you know if that has been
addressed?

Depending on timing, OpenXT may just move to TrenchBoot for a DRTM solution.

Regards,
Jason