On Fri 2019-08-23 01:10:49, tip-bot2 for Tom Lendacky wrote: > The following commit has been merged into the x86/urgent branch of tip: > > Commit-ID: c49a0a80137c7ca7d6ced4c812c9e07a949f6f24 > Gitweb: > https://git.kernel.org/tip/c49a0a80137c7ca7d6ced4c812c9e07a949f6f24 > Author: Tom Lendacky <[email protected]> > AuthorDate: Mon, 19 Aug 2019 15:52:35 > Committer: Borislav Petkov <[email protected]> > CommitterDate: Mon, 19 Aug 2019 19:42:52 +02:00 > > x86/CPU/AMD: Clear RDRAND CPUID bit on AMD family 15h/16h > > There have been reports of RDRAND issues after resuming from suspend on > some AMD family 15h and family 16h systems. This issue stems from a BIOS > not performing the proper steps during resume to ensure RDRAND continues > to function properly.
There are quite a few unanswered questions here.
a) Is there/should there be CVE for this?
b) Can we perform proper steps in kernel, thus making RDRAND usable
even when BIOS is buggy?
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
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