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From: Arnd Bergmann <arnd@arndb.de>
To: linuxppc-dev@ozlabs.org
Subject: Re: [RFC 0/3] powerpc: memory copy routines tweaked for Cell
Date: Thu, 19 Jun 2008 13:53:16 +0200
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Cc: Mark Nelson <markn@au1.ibm.com>, Gunnar von Boehn <VONBOEHN@de.ibm.com>,
	cbe-oss-dev@ozlabs.org, Michael Ellerman <ellerman@au1.ibm.com>
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On Thursday 19 June 2008, Mark Nelson wrote:
> The plan is to use Michael Ellerman's code patching work so that at runtime
> if we're running on a Cell machine the new routines are called but otherwise
> the existing memory copy routines are used.

Have you tried running this code on other platforms to see if it
actually performs worse on any of them? I would guess that the
older code also doesn't work too well on Power 5 and Power 6, so the
cell optimized version could give us a significant advantage as well,
albeit less than another CPU specific version.

	Arnd <><