[svsm-devel] SVSM Development Call April 3rd, 2024

[James Bottomley]

On Wed, 2024-04-03 at 11:59 +0000, Yao, Jiewen wrote:
> Hi Jorg
> Probably you already notice that I have raised the question on vTPM
> interface in coconut-svsm.
> 
> I have explained how we did the POC in a secure way for TD-
> partitioning with TPM CRB buffer.
> Jeremi Piotrowski also explained the mechanism to expose vTPM through
> TPM CRB MMIO. In Intel, we still don't understand why SVSM must use a
> specific vTPM protocol, but not use TCG defined TPM2 CRB buffer
> directly.

Nobody has said *must*.  The enlightened interface was designed after
we had all the trouble with the CRB one outlined in the previous email
thread, so that's what this pull request has.  However, this being open
source nothing prevents you submitting a pull request for a functioning
CRB interface if that's what you want.

James