Re: [PATCH 2/2] x86/random: Issue a warning if RDRAND or RDSEED fails

Jason A. Donenfeld
2024-01-30T18:23:24Z

On Tue, Jan 30, 2024 at 6:58 PM Dave Hansen <dave.hansen@intel.com> wrote:
>
> On 1/30/24 09:49, Jason A. Donenfeld wrote:
> >> Anybody disagree?
> > Yes, I disagree. I made a trivial test that shows RDSEED breaks easily
> > in a busy loop. So at the very least, your statement holds true only
> > for RDRAND.
>
> Well, darn. :)
>
> Any chance you could share some more information about the environment
> where you're seeing this? It'd be good to reconcile what you're seeing
> with how the hardware is expected to behave.

That is already in this thread already. Maybe catch up on the whole
thing and then jump back in?