Hi all,

sorry in advance for placing a question here that is not directly on
tboot, but I expect to find the highest density of experts here:

Is it feasible and did someone possibly try so far to do a measured
launch of something from within a running Linux system, specifically one
that was not booted via a chain of trust? According to my still limited
understanding of TXT, there is no technical difference between launching
from a boot loader or from a booted OS a bit later, right?

As you may guess, the scenario is to lock-down some entity that is
started by Linux (I'm thinking of our hypervisor Jailhouse [1] and its
non-Linux guests) while keeping the kernel itself open.

Alternatively, what would be required to re-use tboot for doing another
MLE start after a verified Linux already booted?

Thanks!
Jan

[1] https://github.com/siemens/jailhouse

-- 
Siemens AG, Corporate Technology, CT RTC ITP SES-DE
Corporate Competence Center Embedded Linux

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