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

[Patrick Ohly]

On Wed, 2017-05-03 at 10:42 -0400, Stefan Berger wrote:
>   - the TPM 2 part , as stated before, is still somewhat in flux. I am 
> not sure when there will be a final TPM 2 from TCG. There the 
> possibility exists that the state blobs the TPM 2 is writing out still 
> change. I have added a version tag in front of the blobs so in case 
> something else gets added that that can be accommodated. Besides that 
> it's also adapted to write the state blobs in big endian format for the 
> same reason as above. Maybe at some point I'll just freeze the code and 
> don't follow the ongoing TPM 2 development anymore besides bug fixes to 
> exsting code, which then freezes the state blobs as well.

Ignoring the "work in progress" status of TPM 2 and your
https://github.com/stefanberger/swtpm/tree/tpm2-preview branch, should
your current code already also work with the qemu device backend that is
getting discussed here?

In other words, are protocol changes needed? I know that TPM 2 has
changed the commands, but I don't know whether that affects also the
lower layers.

-- 
Best Regards, Patrick Ohly

The content of this message is my personal opinion only and although
I am an employee of Intel, the statements I make here in no way
represent Intel's position on the issue, nor am I authorized to speak
on behalf of Intel on this matter.