linux-kernel - Re: [PATCH v3 2/5] random,x86: Add arch_get_slow_rng

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Message-ID: <CALCETrVCrJEwYokasRoqQTKJWKtzq9XUMNqHoT4-ZjgyZ-mBow@mail.gmail.com>
Date:	Wed, 16 Jul 2014 15:40:55 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	kvm list <kvm@...r.kernel.org>, "Theodore Ts'o" <tytso@....edu>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kees Cook <keescook@...omium.org>, X86 ML <x86@...nel.org>,
	Daniel Borkmann <dborkman@...hat.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>,
	Gleb Natapov <gleb@...nel.org>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Bandan Das <bsd@...hat.com>
Subject: Re: [PATCH v3 2/5] random,x86: Add arch_get_slow_rng_u64

On Wed, Jul 16, 2014 at 3:13 PM, Andy Lutomirski <luto@...capital.net> wrote:
> My personal preference is to defer this until some user shows up.  I
> think that even this would be too complicated for KASLR, which is the
> only extremely early-boot user that I found.
>
> Hmm.  Does the prandom stuff want to use this?

prandom isn't even using rdrand.  I'd suggest fixing this separately,
or even just waiting until someone goes and deletes prandom.

--Andy
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