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

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Date:   Sun, 25 Aug 2019 21:49:12 +0200
From:   Borislav Petkov <bp@...e.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Pu Wen <puwen@...on.cn>, Thomas Gleixner <tglx@...utronix.de>,
        Tom Lendacky <thomas.lendacky@....com>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        the arch/x86 maintainers <x86@...nel.org>
Subject: Re: [GIT pull] x86/urgent for 5.3-rc5

On Sun, Aug 25, 2019 at 12:35:53PM -0700, Linus Torvalds wrote:
> You know what? The days of UP are long gone, and we really only want a
> one-time warning, so I think your thing is fine as-is.
> 
> It would be good to test with a known-bad setup, of course..

The trivial test by not incrementing the @changed variable looks like
this: http://ix.io/1Tsr

We're really verbose, though. Dunno if we should make this a WARN_ONCE
or we say that we really should be very loud with a non-functioning
RDRAND...

-- 
Regards/Gruss,
    Boris.

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