From: David Woodhouse <dwmw2@infradead.org>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-kernel@vger.kernel.org, matthew@wil.cx, davem@redhat.com
Subject: Re: When should we use likely() / unlikely() / get_unaligned() ?
Date: Sun, 08 Feb 2004 23:06:43 +0000 [thread overview]
Message-ID: <1076281602.8563.1.camel@imladris.demon.co.uk> (raw)
In-Reply-To: <20040208230331.79FEB2C003@lists.samba.org>
On Mon, 2004-02-09 at 10:00 +1100, Rusty Russell wrote:
> > we now support architectures in 2.6 where alignment fixups _cannot_ happen,
> > and the cost of the 'exception' case should be considered infinite.
>
> Um, we do? I thought it was compulsory in the kernel, otherwise
> networking breaks on packets w/ wierd hardware headers.
We do. It breaks. I'm trying to come up with a solution for it which
actually lets us optimise elsewhere too, and hence has at least a
whelk's chance in a supernova of being accepted... :)
--
dwmw2
next prev parent reply other threads:[~2004-02-08 23:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-06 11:06 David Woodhouse
2004-02-08 10:43 ` Rusty Russell
2004-02-08 11:13 ` David Woodhouse
2004-02-08 23:00 ` Rusty Russell
2004-02-08 23:06 ` David Woodhouse [this message]
2004-02-08 23:11 ` David S. Miller
2004-02-08 23:14 ` David Woodhouse
2004-02-16 11:39 ` Pavel Machek
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