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2 Commits

Author SHA1 Message Date
Yu Watanabe
4ebbb5bfe8 man: asorted fixes
Closes #35307.
2024-11-24 01:11:42 +09:00
Lennart Poettering
4e1f0037b8 units: add a tpm2.target synchronization point and small generator that pulls in
Distributions apparently only compile a subset of TPM2 drivers into the
kernel. For those not compiled it but provided as kmod we need a
synchronization point: we must wait before the first TPM2 interaction
until the driver is available and accessible.

This adds a tpm2.target unit as such a synchronization point. It's
ordered after /dev/tpmrm0, and is pulled in by a generator whenever we
detect that the kernel reported a TPM2 to exist but we have no device
for it yet.

This should solve the issue, but might create problems: if there are TPM
devices supported by firmware that we don't have Linux drivers for we'll
hang for a bit. Hence let's add a kernel cmdline switch to disable (or
alternatively force) this logic.

Fixes: #30164
2024-01-03 13:49:02 +01:00