Re: [GIT pull] x86/urgent for 5.3-rc5

From: Borislav Petkov
Date: Sun Aug 25 2019 - 13:30:08 EST

On Sun, Aug 25, 2019 at 10:18:02AM -0700, Linus Torvalds wrote:
> Not doing the Zen 2 boot-time case? Everybody assumes that all
> firmware has been fixed?

My info is that all Zen has been taken care of with fw fixes.

> That one should be easy to verify since it happens at boot: just do
> "rdrand" twice, and if it returns all-ones both times, it's broken.

Should we do that somewhere in the early boot code by adding a WARN_ON()
or so and see who screams?


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