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docs: Fix information for default TPM version

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The current information is not accurate, because the default
is 2.0 instead of 1.2 for the tpm-crb and tpm-spapr models.

Any detailed list will surely become obsolete and out of sync
with reality over time, so let's just document that the default
model depends on a number of factors and avoid getting any more
specific than that.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Tested-by: Liu Yiding <liuyd.fnst@fujitsu.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Andrea Bolognani 2021-06-25 15:16:30 +02:00
parent 0e8e50e444
commit 499c38b22f
1 changed files with 6 additions and 3 deletions
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docs/formatdomain.rst
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@ -7540,13 +7540,16 @@ Example: usage of the TPM Emulator
each QEMU guest requesting access to it.
``version``
The ``version`` attribute indicates the version of the TPM. By default a TPM
1.2 is created. This attribute only works with the ``emulator`` backend. The
following versions are supported:
The ``version`` attribute indicates the version of the TPM. This attribute
only works with the ``emulator`` backend. The following versions are
supported:
- '1.2' : creates a TPM 1.2
- '2.0' : creates a TPM 2.0
The default version used depends on the combination of hypervisor, guest
architecture, TPM model and backend.
``persistent_state``
The ``persistent_state`` attribute indicates whether 'swtpm' TPM state is
kept or not when a transient domain is powered off or undefined. This