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Date: Sun, 27 May 2012 23:56:40 -0400 (EDT)
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To: paulus@samba.org
Subject: Re: [PATCH 2/2] powerpc: Use the new generic strncpy_from_user()
 and strnlen_user()
From: David Miller <davem@davemloft.net>
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From: Paul Mackerras <paulus@samba.org>
Date: Mon, 28 May 2012 13:03:47 +1000

> This is much the same as for SPARC except that we can do the find_zero()
> function more efficiently using the count-leading-zeroes instructions.
> Tested on 32-bit and 64-bit PowerPC.
> 
> Signed-off-by: Paul Mackerras <paulus@samba.org>

Looks great.

Acked-by: David S. Miller <davem@davemloft.net>

I might hack sparc64 to use 'lzd' or 'popc' on newer chips via code
patching at some point.