On Tue, Dec 09, 2014 at 09:40:28AM -0500, Stefan Berger wrote:
> On 12/09/2014 09:35 AM, Michael S. Tsirkin wrote:
> >On Tue, Dec 09, 2014 at 09:18:54AM -0500, Stefan Berger wrote:
> >>The following series of patches extends the TPM TIS implementation to
> >>version 1.3. This will lead to a TIS version that supports TPM 2.
> >>For this I would post relatively small patches afterwards.
> >>
> >>Regards,
> >> Stefan
> >
> >Since this is guest visible, should this be limited
> >to new machine types, to avoid breaking migrating
> >guests across hypervisor versions?
>
> Migration is not currently possible with TPM, since TPM (passthrough) is
> preventing it.
>
> Stefan
OK, for live migration, fair enough.
For off-line migration: will the following still work:
- boot guest with tpm 1.3. use tpm in some way
- halt, start guest on old qemu with tpm 1.2
?
