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Message-ID: <20161215210425.GX3207@twins.programming.kicks-ass.net>
Date: Thu, 15 Dec 2016 22:04:25 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: "Jason A. Donenfeld" <Jason@...c4.com>
Cc: Hannes Frederic Sowa <hannes@...essinduktion.org>,
David Laight <David.Laight@...lab.com>,
Netdev <netdev@...r.kernel.org>,
"kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>,
Jean-Philippe Aumasson <jeanphilippe.aumasson@...il.com>,
LKML <linux-kernel@...r.kernel.org>,
Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
"Daniel J . Bernstein" <djb@...yp.to>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Eric Biggers <ebiggers3@...il.com>
Subject: Re: [PATCH v2 1/4] siphash: add cryptographically secure hashtable
function
On Thu, Dec 15, 2016 at 09:43:04PM +0100, Jason A. Donenfeld wrote:
> On Thu, Dec 15, 2016 at 9:31 PM, Hannes Frederic Sowa
> <hannes@...essinduktion.org> wrote:
> > ARM64 and x86-64 have memory operations that are not vector operations
> > that operate on 128 bit memory.
>
> Fair enough. imull I guess.
imull is into rdx:rax, not memory. I suspect he's talking about
cmpxchg16b.
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