linux-kernel - Re: [PATCH] Re: Sparc32: random invalid instruction occourances on sparc32 (sun4c)

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Message-Id: <1183490778.29081.35.camel@shinybook.infradead.org>
Date:	Tue, 03 Jul 2007 15:26:18 -0400
From:	David Woodhouse <dwmw2@...radead.org>
To:	Mark Fortescue <mark@...hpc.demon.co.uk>
Cc:	linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, sparclinux@...r.kernel.org,
	David Miller <davem@...emloft.net>,
	Christoph Lameter <clameter@...r.sgi.com>,
	William Lee Irwin III <wli@...omorphy.com>
Subject: Re: [PATCH] Re: Sparc32: random invalid instruction occourances on
	sparc32 (sun4c)

On Tue, 2007-07-03 at 19:57 +0100, Mark Fortescue wrote:
> > Commit b46b8f19c9cd435ecac4d9d12b39d78c137ecd66 partially fixed alignment 
> > issues but does not ensure that all 64bit alignment requirements of sparc32 
> > are met. Tests have shown that the redzone2 word can become misallignd.

Oops, sorry about that. I'm not sure about your patch though -- I think
I'd prefer to keep the redzone misaligned (and hence _right_ next to the
real data), and just deal with it.

typedef unsigned long long __aligned__((BYTES_PER_WORD)) redzone_t;

-- 
dwmw2

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