Subject: Re: [PATCH v2 1/4] siphash: add cryptographically secure hashtable function

From: Peter Zijlstra <[email-masked]>
Date: Thu, 15 Dec 2016 22:04:25 +0100

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
> <[email-masked]> 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.