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Subject: Re: [patch 3/3] cell: prevent alignment interrupt on local store
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Akinobu Mita <mita@fixstars.com>
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Date: Wed, 11 Apr 2007 07:22:48 +1000
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Cc: Arnd Bergmann <arnd@arndb.de>, linuxppc-dev@ozlabs.org,
	Paul Mackerras <paulus@samba.org>, cbe-oss-dev@ozlabs.org
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On Tue, 2007-04-10 at 20:15 +0900, Akinobu Mita wrote:
> An Alignment interrupt occurs when the instruction is lmw, stmw, lswi, lswx,
> stswi, or stswx, and the operand is in local store.
> 
> GCC generated such instructions to handle memcpy() instead of kernel
> defined memcpy() without -mno-string option.
> 
> Signed-off-by: Akinobu Mita <mita@fixstars.com>

I would personally prefer building the entire kernel with -mno-string
when cell support is enabled...

Ben.