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

On 15.12.2016 22:04, Peter Zijlstra wrote:

On Thu, Dec 15, 2016 at 09:43:04PM +0100, Jason A. Donenfeld wrote:

quoted

On Thu, Dec 15, 2016 at 9:31 PM, Hannes Frederic Sowa
[off-list ref] wrote:

quoted

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.

Exactly and I think I saw a ll/sc 128 bit on armv8 to atomically
manipulate linked lists.

Bye,
Hannes