> On the BSDs getentropy() is hence unconditionally blocking https://lore.kernel.org/linux-ext4/20190917172824.GB31798@gardel-login/ … Lennart/Linux people still don't get it.. OpenBSD getentropy(2) does not block by design. The same as /dev/urandom. https://man.openbsd.org/random.4 https://man.openbsd.org/getentropy.2
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Based on what I understand, what Lennart needs to do is say "systemd was wrong to use getrandom here and I'll fix it. Don't break getrandom and everything depending on it for cryptographic safety to work around my systemd bug."
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The Linux kernel needs a strong CSPRNG in early boot. It doesn't have a real excuse for this being broken. There should be no issue with every program on the system using getrandom from early boot especially since the Linux kernel had important uses for the CSPRNG before PID 1.
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