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Mimi Zohar 8f6ba073a0 Fix reading the TPM 2.0 PCRs
Prior to the support for reading the TPM 2.0 PCRs via the sysfs
interface, based on environment variables the userspace application read
either the physical or software TPM's PCRs.

With the support for reading the exported TPM 2.0 PCRs via the sysfs
interface, the physical TPM's PCRs are always read.  Define a new evmctl
option named '--hwtpm' to limit reading the TPM 2.0 PCRs via the sysfs
interface.

Fixes: a141bd594263 ("add support for reading per bank TPM 2.0 PCRs via sysfs")
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
2023-02-23 09:37:54 -05:00
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