From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Thu, 26 Jun 2025 10:16:59 +0000 (+0200)
Subject: docs/TPM2_PCR_MEASUREMENTS: link to the PCR registry page
X-Git-Tag: v258-rc1~246^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ab7e55f19547fb04662d4330d00ae72044634acf;p=thirdparty%2Fsystemd.git

docs/TPM2_PCR_MEASUREMENTS: link to the PCR registry page
---

diff --git a/docs/TPM2_PCR_MEASUREMENTS.md b/docs/TPM2_PCR_MEASUREMENTS.md
index 2931c22be82..b7f0b09771c 100644
--- a/docs/TPM2_PCR_MEASUREMENTS.md
+++ b/docs/TPM2_PCR_MEASUREMENTS.md
@@ -16,6 +16,10 @@ measurements listed below are (by default) only done if a system is booted with
 to systemd's UEFI-mode measurements, and if the latter are not done the former
 aren't made either.
 
+See
+[Linux TPM PCR Registry](https://uapi-group.org/specifications/specs/linux_tpm_pcr_registry/)
+for an overview of PCRs.
+
 systemd will measure to PCRs 5 (`boot-loader-config`), 11 (`kernel-boot`),
 12 (`kernel-config`), 13 (`sysexts`), 15 (`system-identity`).