Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Thu, 15 Dec 2016 22:11:24 +0100
From: "Jason A. Donenfeld" <>
Cc: Hannes Frederic Sowa <>, David Laight <>, 
	Netdev <>, 
	Jean-Philippe Aumasson <>, LKML <>, 
	Linux Crypto Mailing List <>, "Daniel J . Bernstein" <>, 
	Linus Torvalds <>, Eric Biggers <>
Subject: Re: Re: [PATCH v2 1/4] siphash: add
 cryptographically secure hashtable function

On Thu, Dec 15, 2016 at 10:09 PM, Peter Zijlstra <> wrote:
> On Thu, Dec 15, 2016 at 07:50:36PM +0100, Jason A. Donenfeld wrote:
>> There's no 32-bit platform
>> that will trap on a 64-bit unaligned access because there's no such
>> thing as a 64-bit access there. In short, we're fine.
> ARMv7 LPAE is a 32bit architecture that has 64bit load/stores IIRC.
> x86 has cmpxchg8b that can do 64bit things and very much wants the u64
> aligned.
> Also, IIRC we have a few platforms where u64 doesn't carry 8 byte
> alignment, m68k or something like that, but yes, you likely don't care.

Indeed, I stand corrected. But in any case, the use of __aligned(8) in
the patchset ensures that things are fixed and that we don't have this

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.