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Date: Wed, 16 Oct 2002 10:17:10 +0200 (CEST)
From: Ingo Molnar <mingo@elte.hu>
Reply-To: Ingo Molnar <mingo@elte.hu>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Linus Torvalds <torvalds@transmeta.com>, <linux-kernel@vger.kernel.org>
Subject: Re: [patch] futex-2.5.42-A2 
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On Wed, 16 Oct 2002, Rusty Russell wrote:

> If you do this, *please* add:
> 	/* Above check not sufficient if align of int < size.  Break link. */
> 	if (__alignof__(int) < sizeof(int)) {
> 		extern void __error_small_int_align();
> 		__error_small_int_align();
> 	}

are you aware of any platform we care about that has a word alignment like
this? But in any case, this should not matter these days, all we need is a
guarantee that the word is accessed atomically by the kernel when it reads
it, pure int alignment should be enough for that.

	Ingo


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