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Date:	Tue, 28 Nov 2006 11:13:00 -0800 (PST)
From:	David Miller <>
Subject: Re: Kevent POSIX timers support.

From: Evgeniy Polyakov <>
Date: Tue, 28 Nov 2006 12:16:02 +0300

> Although ukevent has pointer embedded, it is unioned with u64, so there
> should be no problems until 128 bit arch appeared, which likely will not
> happen soon. There is also unused in kevent posix timers patch
> 'u32 ret_val[2]' field, which can store segval's value too.
> But the fact that ukevent does not and will not in any way have variable
> size is absolutely.

I believe that in order to be %100 safe you will need to use the
special aligned_u64 type, as that takes care of a crucial difference
between x86 and x86_64 API, namely that u64 needs 8-byte alignment on
x86_64 but not on x86.

You probably know this already :-)
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