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From: Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [PATCH] force stackpointer alignment in 64bit kernel
Date: Fri, 3 Mar 2006 20:32:29 +0100
To: Segher Boessenkool <segher@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org, Olaf Hering <olh@suse.de>
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>>  	/* Make sure we are running in 64 bits mode */
>> +	addi	r1,r1,16
>> +	rlwinm	r1,r1,0,0,28
>>  	bl	.enable_64b_mode
>
> Not addi +16, not -16, just no addi at all...

Not rlwinm either, GPR1 can potentially be at >= 4GB
(of course we'd probably hit other problems then, but hey).
So please use rldicr or similar.


Segher