Re: [Qemu-devel] [PATCH v3 8/8] tpm: Added support for TPM emulator

[Stefan Berger]

On 05/02/2017 12:05 PM, Marc-André Lureau wrote:
> Hi
>
> On Tue, May 2, 2017 at 3:53 PM Amarnath Valluri 
> <address@hidden <mailto:address@hidden>> wrote:
>
>     This change introduces a new TPM backend driver that can
>     communicate with
>     swtpm(software TPM emulator) using unix domain socket interface.
>
>     Swtpm uses two unix sockets, one for plain TPM commands and
>     responses, and one
>     for out-of-band control messages.
>
>
> Let's not forget to mention the external protocol this backend rely on:
> https://github.com/stefanberger/swtpm/wiki/Control-Channel-Specification
>
> The protocol documentation is quite limited.
>
> (I still question the need to rely on a public protocol, and a 
> seperate helper process project. If we had a qemu-swtpm, we could more 
> easily evolve the protocol in the future)

And who is going to implement that qemu-swtpm? Obviously this discussion 
doesn't contribute to progress if nobody is doing that in the end.