Re: [RFC v4][PATCH 2/2] intel_txt: Intel(R) TXT and tboot kernelsupport

From: Pavel Machek
Date: Fri Jun 19 2009 - 17:23:35 EST



> > > > Linux support for Intel(R) Trusted Execution Technology.
> > >
> > > > Signed-off-by: Joseph Cihula <joseph.cihula@xxxxxxxxx>
> > > > Signed-off-by: Shane Wang <shane.wang@xxxxxxxxx>
> > > > Signed-off-by: Gang Wei <gang.wei@xxxxxxxxx>
> > >
> > > Reviewed-by: James Morris <jmorris@xxxxxxxxx>
> > >
> > > There have been no comments on this since you posted it, so we might
> > > assume there are no further technical issues.
> >
> > I believe the code at best useless and at worst dangerous. We don't
> > merge useless code to the kernel.
> >
> > What are non-evil uses of this code?
>
> Yes, most of the uses contemplated for this are for evil DRM schemes. On the
> other hand, the code is equally useful to help make sure that mo miscreant has
> snuck evil DRM (or other evil code) in behind my back.
>
> "Somebody has screwed with this kernel image, and you're not booting what you
> thought you were booting."
>
> Seems worth it to me.

Unfortunately, I do not think you can boot linux kernel under TXT
sandbox. (Is there some code that you can boot under TXT sandbox? If
so, where?)
Pavel
--
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