From: unlvsur unlvsur <unlvsur@live.com>
To: unlvsur unlvsur via Libstdc++ <libstdc++@gcc.gnu.org>
Subject: About amd ryzen 3000 bugs of rdseed and rdrand?
Date: Mon, 4 Oct 2021 08:47:35 +0000 [thread overview]
Message-ID: <DM6PR05MB469779B5C2983655A5CA3E7BD6AE9@DM6PR05MB4697.namprd05.prod.outlook.com> (raw)
My computer used to always return -1 for rdseed and rdrand for ryzen 3000.
AMD Ryzen 3000 series CPUs can't do Random on boot causing Boot Failure on newer Linux distributions - LinuxReviews<https://linuxreviews.org/AMD_Ryzen_3000_series_CPUs_can%27t_do_Random_on_boot_causing_Boot_Failure_on_newer_Linux_distributions>
[PATCH] x86/CPU/AMD: Clear RDRAND CPUID bit on AMD family 15h/16h (kernel.org)<https://lore.kernel.org/all/776cb5c2d33e7fd0d2893904724c0e52b394f24a.1565817448.git.thomas.lendacky@amd.com/T/#u>
Libstdc++ uses rdseed and rdrand internally. Does it contain the rdseed bugs on ryzen 3000 cpu?
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next reply other threads:[~2021-10-04 8:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-04 8:47 unlvsur unlvsur [this message]
2021-10-04 9:24 ` Jonathan Wakely
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