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From: Andrew Morton <akpm@osdl.org>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: manfred@colorfullife.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] optimize ia32 memmove
Date: Tue, 30 Dec 2003 00:11:21 -0800	[thread overview]
Message-ID: <20031230001121.48ff4d8c.akpm@osdl.org> (raw)
In-Reply-To: <3FF12FC7.5030202@pobox.com>

Jeff Garzik <jgarzik@pobox.com> wrote:
>
> > "if dest is less that source, then call memcpy".  If the move is to a
>  > higher address we do it the old way.
> 
> 
>  I'm confused... that doesn't say anything to me about overlap.
> 

Overlap is OK if dest<src, because memcpy starts with the lowest address
and works upwards.



  reply	other threads:[~2003-12-30  8:11 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <200312300713.hBU7DGC4024213@hera.kernel.org>
2003-12-30  7:32 ` Jeff Garzik
2003-12-30  7:51   ` Andrew Morton
2003-12-30  7:56     ` Jeff Garzik
2003-12-30  8:11       ` Andrew Morton [this message]
2003-12-30  8:11       ` Andreas Dilger
2003-12-30 10:05         ` Linus Torvalds
2003-12-30  9:58       ` Linus Torvalds
2003-12-30 10:17         ` Jeremy Fitzhardinge
2003-12-30 11:12           ` Manfred Spraul
2003-12-30 20:17             ` H. Peter Anvin
2003-12-30 10:21   ` Ed Sweetman
2003-12-30 10:37     ` Andrew Morton

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