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Message-ID: <CA+55aFzxY9n13an-axtzCkHM+HdjOXb9Kai4QOMxyce_kXFRXw@mail.gmail.com>
Date: Thu, 15 Dec 2016 13:14:16 -0800
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: "Jason A. Donenfeld" <Jason@...c4.com>
Cc: "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>,
Hannes Frederic Sowa <hannes@...essinduktion.org>, David Laight <David.Laight@...lab.com>,
Netdev <netdev@...r.kernel.org>,
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>,
Eric Biggers <ebiggers3@...il.com>
Subject: Re: Re: [PATCH v2 1/4] siphash: add
cryptographically secure hashtable function
On Thu, Dec 15, 2016 at 1:11 PM, Jason A. Donenfeld <Jason@...c4.com> wrote:
>
> 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
> issue.
I think you can/should just use the natural alignment for "u64".
For architectures that need 8-byte alignment, u64 will already be
properly aligned. For architectures (like x86-32) that only need
4-byte alignment, you get it.
Linus
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