From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from az33egw02.freescale.net (az33egw02.freescale.net [192.88.158.103]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "az33egw02.freescale.net", Issuer "Thawte Premium Server CA" (verified OK)) by ozlabs.org (Postfix) with ESMTP id 1FAC4DDE1C for ; Fri, 28 Sep 2007 09:01:51 +1000 (EST) Message-ID: <46FC3645.70303@freescale.com> Date: Thu, 27 Sep 2007 18:01:25 -0500 From: Scott Wood MIME-Version: 1.0 To: michael@ellerman.id.au Subject: Re: [PATCH v4] Make instruction dumping work in real mode. References: <20070927183855.GA18226@loki.buserror.net> <1190933846.6601.1.camel@concordia> In-Reply-To: <1190933846.6601.1.camel@concordia> Content-Type: text/plain; charset=UTF-8; format=flowed Cc: linuxppc-dev@ozlabs.org, paulus@samba.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Michael Ellerman wrote: > On Thu, 2007-09-27 at 13:38 -0500, Scott Wood wrote: >> On non-book-E-or-4xx, exceptions execute in real mode. If a fault happens >> that leads to a register dump, the kernel currently prints XXXXXXXX because >> it doesn't realize that PC is a physical address. >> >> This patch checks the state of the IMMU, and if necessary converts PC into a >> virtual address. > > IMMU ? Instruction Memory Management Unit. -Scott