On 12/09/2014 09:45 AM, Michael S. Tsirkin wrote:
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
?
So this is not a suspend resume operation ? Sure, it will work if the
driver the OS is using works with a TPM TIS 1.3 interface and also with
a TPM TIS 1.2 interface.
Stefan
