> There is also value when it comes to easier SRTM/DRTM measurements of
> the system in question, including cases where Xen sits on a boot ROM
> rather than on disk.

We've explored that in the past - building things into Xen and Linux
statically - and ultimately it only works if the command line passed
to Xen also gets measured, otherwise you can always override any
built-in component. So for example with OpenXT on UEFI the entire Xen
config file gets measured. For DRTM I don't think it makes much
difference, I believe the active microcode info is already part of the
measurement, so having it measured as part of the Xen blob doesn't add
anything.

Tamas

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