From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 670C72C00A6 for ; Sun, 18 Aug 2013 08:05:30 +1000 (EST) Message-ID: <1376777122.25016.9.camel@pasglop> Subject: Re: Critical Interrupt Input From: Benjamin Herrenschmidt To: Kumar Gala Date: Sun, 18 Aug 2013 08:05:22 +1000 In-Reply-To: References: <4724f96e$5f998126$5fb2b995$@deltatau.com> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Cc: linuxppc-dev@lists.ozlabs.org, hbausley@deltatau.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, 2013-08-16 at 06:04 -0500, Kumar Gala wrote: > The 44x low level code needs to handle exception stacks properly for > this to work. Since its possible to have a critical exception occur > while in a normal exception level, you have to have proper saving of > additional register state and a stack frame for the critical > exception, etc. I'm not sure if that was ever done for 44x. Don't 44x and FSL BookE share the same macros ? I would think 44x does indeed implement the same crit support as e500... What does the crash look like ? Ben.