From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from penguin.netx4.com (embeddededge.com [209.113.146.155]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 28ECB67B25 for ; Wed, 13 Apr 2005 00:46:43 +1000 (EST) In-Reply-To: References: Mime-Version: 1.0 (Apple Message framework v619.2) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: <83a359bdf2c4d4902f58e6788c37811a@embeddededge.com> From: Dan Malek Date: Tue, 12 Apr 2005 10:46:29 -0400 To: Kumar Gala Cc: linuxppc-dev@ozlabs.org Subject: Re: [PATCH] ppc32: Fix alignment exception checking on load/store multiple instructions List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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