http://systemd.cn/tags/tpm2/Recent content in Tpm2 on systemd中文文档Hugozh[© CC BY 4.0](https://creativecommons.org/licenses/by/4.0/legalcode)http://systemd.cn/docs/Booting/TPM2_PCR_MEASUREMENTS/Mon, 01 Jan 0001 00:00:00 +0000http://systemd.cn/docs/Booting/TPM2_PCR_MEASUREMENTS/<h1 id="tpm2-pcr测量">TPM2 PCR测量<a class="anchor" href="#tpm2-pcr%e6%b5%8b%e9%87%8f">#</a></h1> <p>Various systemd components issue TPM2 PCR measurements during the boot process, both in UEFI mode and from userspace. The following lists all measurements done, and describes (in case done before <code>ExitBootServices()</code>) how they appear in the TPM2 Event Log, maintained by the PC firmware. Note that the userspace measurements listed below are (by default) only done if a system is booted with <code>systemd-stub</code> — or in other words: systemd&rsquo;s userspace measurements are linked to systemd&rsquo;s UEFI-mode measurements, and if the latter are not done the former aren&rsquo;t made either.</p>