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From: Dan Malek <dan@embeddededge.com>
To: Kumar Gala <galak@freescale.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] ppc32: Fix alignment exception checking on load/store multiple instructions
Date: Tue, 12 Apr 2005 10:46:29 -0400	[thread overview]
Message-ID: <83a359bdf2c4d4902f58e6788c37811a@embeddededge.com> (raw)
In-Reply-To: <Pine.LNX.4.61.0504120101210.10781@blarg.somerset.sps.mot.com>


On Apr 12, 2005, at 2:03 AM, Kumar Gala wrote:

> The handling of misaligned load/store multiplies did not check to see 
> if
> the address were ok to access before __{get,put}_user().

I think we should also take the opportunity to fix up the lawrx
case and look for other reserved/conditional instructions
that may slip through.  Since these are atomic operations, we
can't emulate them.  According to the PEM, an alignment fault
on these is a fatal programming error.

Thanks.

	-- Dan

  reply	other threads:[~2005-04-12 14:46 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-12  6:03 [PATCH] ppc32: Fix alignment exception checking on load/store multiple instructions Kumar Gala
2005-04-12 14:46 ` Dan Malek [this message]
2005-04-12 15:06   ` Kumar Gala
2005-04-12 15:26     ` Kumar Gala
2005-04-12 16:20       ` Dan Malek
2005-04-12 15:31     ` Dan Malek
2005-04-19 14:50 ` Kumar Gala
2005-04-20  1:26   ` Paul Mackerras

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