Re: [libvirt] [PATCH v9 00/17] Add support for TPM emulator

This series of patches adds support for the TPM emulator backend that is available in QEMU and based on swtpm + libtpms. It allows to attach a TPM 1.2 or 2.0 to a QEMU VM. sVirt labels are used for labeling the swtpm process, its Unix socket, and log file with the same label that the QEMU process gets. Besides that swtpm is added to the emulator cgroup to restrict its CPU usage. The device XML can be changed from a TPM 1.2 to a TPM 2.0 and back to a TPM 1.2. The device state is not removed during those changes but only when the domain is undefined. The swtpm needs persistent storage to store its state. For that I am using the uuid of the VM as part of the path since the name of the VM can be changed. Logfiles, PID files, and socket names are based on the name of the VM, though.