Re: [PATCH v1 1/8] docs: documentation and schema for the new TPM Proxy device
On 5/11/20 6:57 AM, Daniel P. Berrangé wrote:
On Mon, May 11, 2020 at 11:22:57AM +1000, David Gibson wrote:
[...]
> It's a different guest side interface, the H_TPM_COMM
hypercall
> instead of the other PAPR TPM interface. To which "why?" is a very
> good question, but it's there now, so there's not much we can do about
> it.
That's ok. Even though its a different guest interface, it is still
conceptually a TPM device at a high level, so we should be reusing
the existing <tpm> device type. At most we should add a new backend
type
I think adding a new backend type is sensible. Re-using the passthrough type
and making the differentiation with 'model', for a device that doesn't
operate exactly as a regular vTPM but can coexist with other vTPM devices,
will make for a lot of IFs in the code.
DHB
Regards,
Daniel