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Date: Fri, 7 Oct 2005 09:24:07 +1000
From: Paul Mackerras <paulus@samba.org>
To: Giuliano Pochini <pochini@shiny.it>
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Cc: linuxppc-dev@ozlabs.org, linuxppc64-dev@ozlabs.org
Subject: Re: Starting the arch/powerpc merge
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Giuliano Pochini writes:

> Out of curiosity, is there any advantage in using a 32 bits
> kernel on ppc64 over a 64 bits kernel ?  Speed ?  Complexity ?
> Compatibility ?  Memory ?

Not really.  The main thing in the past has been that DRI with 32-bit
X server and clients would work with a 32-bit kernel but not a 64-bit
kernel, but that's fixed now.  A 64-bit kernel is faster on most
lmbench tests.  I guess a 32-bit kernel might end up a little smaller,
but that's the only possible advantage I can think of.

Paul.