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Date: Wed, 16 Jul 2014 17:03:21 -0700 From: Andy Lutomirski <luto@...capital.net> To: "H. Peter Anvin" <hpa@...or.com> Cc: Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>, Paolo Bonzini <pbonzini@...hat.com>, X86 ML <x86@...nel.org>, Bandan Das <bsd@...hat.com>, Gleb Natapov <gleb@...nel.org>, kvm list <kvm@...r.kernel.org>, "Theodore Ts'o" <tytso@....edu>, Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>, Daniel Borkmann <dborkman@...hat.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Kees Cook <keescook@...omium.org> Subject: Re: [PATCH v3 2/5] random,x86: Add arch_get_slow_rng_u64 On Jul 16, 2014 4:00 PM, "H. Peter Anvin" <hpa@...or.com> wrote: > > On 07/16/2014 03:40 PM, Andy Lutomirski wrote: > > 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. > > > > prandom is exactly the opposite; it is designed for when we need > possibly low quality random numbers very quickly. RDRAND is actually > too slow. I meant that prandom isn't using rdrand for early seeding. --Andy > > -hpa > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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