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2022-09-13tpm_emulator: Have swtpm relock storage upon migration fall-backStefan Berger
Swtpm may release the lock once the last one of its state blobs has been migrated out. In case of VM migration failure QEMU now needs to notify swtpm that it should again take the lock, which it can otherwise only do once it has received the first TPM command from the VM. Only try to send the lock command if swtpm supports it. It will not have released the lock (and support shared storage setups) if it doesn't support the locking command since the functionality of releasing the lock upon state blob reception and the lock command were added to swtpm 'together'. If QEMU sends the lock command and the storage has already been locked no error is reported. If swtpm does not receive the lock command (from older version of QEMU), it will lock the storage once the first TPM command has been received. So sending the lock command is an optimization. Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20220912174741.1542330-3-stefanb@linux.ibm.com
2021-06-02docs: fix references to docs/devel/tracing.rstStefano Garzarella
Commit e50caf4a5c ("tracing: convert documentation to rST") converted docs/devel/tracing.txt to docs/devel/tracing.rst. We still have several references to the old file, so let's fix them with the following command: sed -i s/tracing.txt/tracing.rst/ $(git grep -l docs/devel/tracing.txt) Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20210517151702.109066-2-sgarzare@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-06-19tpm: Move backend code under the 'backends/' directoryPhilippe Mathieu-Daudé
TPM subsytem is split into backends (see commit f4ede81eed2) and frontends (see i.e. 3676bc69b35). Keep the emulated hardware 'frontends' under hw/tpm/, but move the backends in the backends/tpm/ directory. Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20200612085444.8362-13-philmd@redhat.com Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>