From: Jason Andryuk <jandryuk@gmail.com>
To: xen-devel@lists.xenproject.org
Cc: Jason Andryuk <jandryuk@gmail.com>,
Ian Jackson <iwj@xenproject.org>, Wei Liu <wl@xen.org>,
Andrew Cooper <andrew.cooper3@citrix.com>
Subject: [PATCH v2 01/13] docs: Warn about incomplete vtpmmgr TPM 2.0 support
Date: Thu, 6 May 2021 09:59:11 -0400 [thread overview]
Message-ID: <20210506135923.161427-2-jandryuk@gmail.com> (raw)
In-Reply-To: <20210506135923.161427-1-jandryuk@gmail.com>
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>
---
docs/man/xen-vtpmmgr.7.pod | 11 +++++++++++
1 file changed, 11 insertions(+)
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
--
2.30.2
next prev parent reply other threads:[~2021-05-06 14:00 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-06 13:59 [PATCH v2 00/13] vtpmmgr: Some fixes - still incomplete Jason Andryuk
2021-05-06 13:59 ` Jason Andryuk [this message]
2021-05-06 13:59 ` [PATCH v2 02/13] vtpmmgr: Print error code to aid debugging Jason Andryuk
2021-05-06 13:59 ` [PATCH v2 03/13] stubom: newlib: Enable C99 formats for %z Jason Andryuk
2021-05-06 13:59 ` [PATCH v2 04/13] vtpmmgr: Allow specifying srk_handle for TPM2 Jason Andryuk
2021-05-06 21:35 ` Samuel Thibault
2021-05-10 11:56 ` Daniel P. Smith
2021-05-06 13:59 ` [PATCH v2 05/13] vtpmmgr: Move vtpmmgr_shutdown Jason Andryuk
2021-05-07 15:48 ` Daniel P. Smith
2021-05-06 13:59 ` [PATCH v2 06/13] vtpmmgr: Flush transient keys on shutdown Jason Andryuk
2021-05-10 12:12 ` Daniel P. Smith
2021-05-06 13:59 ` [PATCH v2 07/13] vtpmmgr: Flush all transient keys Jason Andryuk
2021-05-10 12:19 ` Daniel P. Smith
2021-05-06 13:59 ` [PATCH v2 08/13] vtpmmgr: Shutdown more gracefully Jason Andryuk
2021-05-06 14:04 ` Jason Andryuk
2021-05-10 12:42 ` Daniel P. Smith
2021-05-06 13:59 ` [PATCH v2 09/13] vtpmmgr: Support GetRandom passthrough on TPM 2.0 Jason Andryuk
2021-05-06 21:40 ` Samuel Thibault
2021-05-10 12:51 ` Daniel P. Smith
2021-05-06 13:59 ` [PATCH v2 10/13] vtpmmgr: Remove bogus cast from TPM2_GetRandom Jason Andryuk
2021-05-06 21:41 ` Samuel Thibault
2021-05-10 13:03 ` Daniel P. Smith
2021-05-06 13:59 ` [PATCH v2 11/13] vtpmmgr: Fix owner_auth & srk_auth parsing Jason Andryuk
2021-05-06 21:41 ` Samuel Thibault
2021-05-10 13:18 ` Daniel P. Smith
2021-05-06 13:59 ` [PATCH v2 12/13] vtpmmgr: Check req_len before unpacking command Jason Andryuk
2021-05-06 21:42 ` Samuel Thibault
2021-05-10 13:32 ` Daniel P. Smith
2021-05-06 13:59 ` [PATCH v2 13/13] vtpm: Correct timeout units and command duration Jason Andryuk
2021-05-06 21:52 ` Samuel Thibault
2021-05-10 13:40 ` Daniel P. Smith
2021-05-08 18:37 [PATCH v2 01/13] docs: Warn about incomplete vtpmmgr TPM 2.0 support Rich Persaud
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