diff options
| author | Jason Andryuk <jandryuk@gmail.com> | 2021-05-06 09:59:11 -0400 |
|---|---|---|
| committer | Andrew Cooper <andrew.cooper3@citrix.com> | 2021-05-07 19:50:50 +0100 |
| commit | 93b2558fae83ab3a6a9b48c851d48ccf57be2298 (patch) | |
| tree | b1a517c40c8becad639c4eaf62acc78cdd28febe /docs | |
| parent | 27a4986d4fcd6a1bfdac9cafbce1a2f7a58f796e (diff) | |
docs: Warn about incomplete vtpmmgr TPM 2.0 support
The vtpmmgr TPM 2.0 support is incomplete. Add a warning about that to
the documentation so others don't have to work through discovering it is
broken.
Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Daniel P. Smith <dpsmith@apertussolutions.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/man/xen-vtpmmgr.7.pod | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/docs/man/xen-vtpmmgr.7.pod b/docs/man/xen-vtpmmgr.7.pod index af825a7ffe..875dcce508 100644 --- a/docs/man/xen-vtpmmgr.7.pod +++ b/docs/man/xen-vtpmmgr.7.pod @@ -222,6 +222,17 @@ XSM label, not the kernel. =head1 Appendix B: vtpmmgr on TPM 2.0 +=head2 WARNING: Incomplete - cannot persist data + +TPM 2.0 support for vTPM manager is incomplete. There is no support for +persisting an encryption key, so vTPM manager regenerates primary and secondary +key handles each boot. + +Also, the vTPM manger group command implementation hardcodes TPM 1.2 commands. +This means running manage-vtpmmgr.pl fails when the TPM 2.0 hardware rejects +the TPM 1.2 commands. vTPM manager with TPM 2.0 cannot create groups and +therefore cannot persist vTPM contents. + =head2 Manager disk image setup: The vTPM Manager requires a disk image to store its encrypted data. The image |