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

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Message-ID: <CAHk-=wjcUQjK=SqPGdZCDEKntOZEv34n9wKJhBrPzcL6J7nDqQ@mail.gmail.com>
Date:   Sun, 25 Aug 2019 12:59:25 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Borislav Petkov <bp@...e.de>
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 12:49 PM Borislav Petkov <bp@...e.de> wrote:
>
> 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...

I think WARN_ONCE() is good. It's big enough that it will show up in
dmesg if anybody looks, and if nobody looks I think distros still have
logging for things like that, don't they?

Hopefully this never actually triggers in practice, thanks to rdrand
being turned off on known-bad machines now, and Zen 2 being fixed.

               Linus