2 Commits

Author	SHA1	Message	Date
Jason A. Donenfeld	ffa047a03e	random-util: remove RDRAND usage ... /dev/urandom is seeded with RDRAND. Calling genuine_random_bytes(..., ..., 0) will use /dev/urandom as a last resort. Hence, we gain nothing here by having our own RDRAND wrapper, because /dev/urandom already is based on RDRAND output, even before /dev/urandom has fully initialized. Furthermore, RDRAND is not actually fast! And on each successive generation of new x86 CPUs, from both AMD and Intel, it just gets slower. This commit simplifies things by just using /dev/urandom in cases where we before might use RDRAND, since /dev/urandom will always have RDRAND mixed in as part of it. And above where I say "/dev/urandom", what I actually mean is GRND_INSECURE, which is the same thing but won't generate warnings in dmesg.	2022-03-14 19:47:13 +00:00
Lennart Poettering	ec512b9b9d	doc: add some docs with a checklist of what to do for new architectures	2021-11-10 15:18:01 +01:00