Re: [PATCH] tpm-emulator: add a TPM emulator pass through

[James Bottomley <James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>]

On Mon, 2017-01-09 at 13:41 -0500, Stefan Berger wrote:
> On 01/09/2017 01:24 PM, James Bottomley wrote:
> > On Mon, 2017-01-09 at 13:03 -0500, Stefan Berger wrote:
> > > Examples:
> > > ./src/vtpmctrl --tpm2 \
> > >     --spawn /bin/swtpm chardev --tpm2 --fd %fd --tpmstate
> > > dir=/tmp
> > git head for swtpm is giving
> > 
> > Created TPM device /dev/tpm1; vTPM device has fd 4, major/minor =
> > 247/1.
> > chardev: unrecognized option '--tpm2'
> 
> You need the tpm2-preview branches of libtpms and swtpm. Why you need
> them is related to the format in which the persistent data are 
> written by the TPM 2 implementation. For QEMU it should probably big 
> endian, but so far it's not.
> 
> Here's a short wiki of libtpms pointing out the issues.
> 
> https://github.com/stefanberger/libtpms/wiki
> 
> https://github.com/stefanberger/libtpms/tree/tpm2-previewa.rev138
> https://github.com/stefanberger/swtpm/tree/tpm2-preview

Basically the synopsis is that it's not yet working well enough to run
the resource manager smoke tests and I need to continue using the
ibmswtpm2 as the emulator or run against the real thing for the time
being.

James


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