Re: [PATCH v14 00/19] x86: Trenchboot secure dynamic launch Linux kernel support

Mike
2025-05-18T14:42:36Z

On Mon, Apr 28, 2025 at 7:57 PM Dave Hansen <dave.hansen@intel.com> wrote:
>
> On 4/28/25 17:04, Daniel P. Smith wrote:
> >> OK, but why do this in Linux as opposed to tboot? Right now, much of the
> >> TXT magic is done outside of the kernel. Why do it *IN* the kernel?
> >
> > There was a patch set submitted to tboot to add AMD support. It was
> > rejected as tboot is solely focused on Intel TXT implementation.
> >
> > This meant I either had to go the route of yet another standalone loader
> > kernel or do it in the kernel. Doing it as an external loader would have
> > required a new set of touchpoints, like the one you are highlighting. At
> > which point, I am sure I would have gotten the question of why I didn't
> > do it in the kernel.

Will this cause any patent infringement issues in Linux [1]?

1. https://patents.google.com/patent/US9075995B2