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A comment on RDRAND on AMD Ryzen 9 5900X is flakey. Parent comment

Re:RDRAND on AMD Ryzen 9 5900X is flakey by gruez on Monday January 11, 2021 @04:31PM (#25737456)
But what happens on systems that don't have rdrand? Surely there is a fallback. Why isn't the fallback used in all cases, given how flakey rdrand is?
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Re:RDRAND on AMD Ryzen 9 5900X is flakey by rcxdude on Monday January 11, 2021 @04:49PM (#25737793)
It falls back to /dev/urandom, which will cause the kernel bitterly complain by spamming log messages while the entropy pool hasn't been seeded.
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Re:RDRAND on AMD Ryzen 9 5900X is flakey by LukeShu on Monday January 11, 2021 @06:02PM (#25739140)
If I'm reading the source right, it actually falls back to a blocking `getrandom` followed by /dev/urandom; so actually instead of spamming the logs about "entropy pool hasn't been seeded", it will block until it is seeded.
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Re:RDRAND on AMD Ryzen 9 5900X is flakey by segfaultbuserr on Monday January 11, 2021 @06:55PM (#25740072)
It'll also block the system from booting for as long as a few minutes in the absence of user input.
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