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[PATCH 0/2] tpm_emulator: Signal swtpm to again lock storage
From: |
Stefan Berger |
Subject: |
[PATCH 0/2] tpm_emulator: Signal swtpm to again lock storage |
Date: |
Mon, 12 Sep 2022 13:47:39 -0400 |
Swtpm has been extended to release the lock on the storage where its state
is written to upon migration of the last one of its state blobs. Signal
swtpm to again lock the storage upon migration fallback. An explicit signal
helps swtpm to lock the storage earlier because otherwise it would have
to wait for the next TPM command from the VM.
Releasing the lock on the storage is necessary for setups where the storage
holding the TPM state is shared between hosts.
Regards,
Stefan
v3:
- extended timeout to 3 seconds
Stefan Berger (2):
tpm_emulator: Use latest tpm_ioctl.h from swtpm project
tpm_emulator: Have swtpm relock storage upon migration fall-back
backends/tpm/tpm_emulator.c | 60 ++++++++++++++++++++++-
backends/tpm/tpm_ioctl.h | 96 +++++++++++++++++++++++++++++--------
backends/tpm/trace-events | 2 +
3 files changed, 137 insertions(+), 21 deletions(-)
--
2.37.2