From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by oss.sgi.com id ; Tue, 6 Mar 2001 04:59:54 -0800 Received: from u-91-10.karlsruhe.ipdial.viaginterkom.de ([62.180.10.91]:26884 "EHLO u-91-10.karlsruhe.ipdial.viaginterkom.de") by oss.sgi.com with ESMTP id ; Tue, 6 Mar 2001 04:59:31 -0800 Received: from dea ([193.98.169.28]:7552 "EHLO dea.waldorf-gmbh.de") by bacchus.dhis.org with ESMTP id ; Tue, 6 Mar 2001 13:59:20 +0100 Received: (from ralf@localhost) by dea.waldorf-gmbh.de (8.11.1/8.11.1) id f26CwuB05839; Tue, 6 Mar 2001 13:58:56 +0100 Date: Tue, 6 Mar 2001 13:58:56 +0100 From: Ralf Baechle To: ldavies@oz.agile.tv Cc: linux-mips@oss.sgi.com Subject: Re: Troubles with TLB refills Message-ID: <20010306135856.E1184@bacchus.dhis.org> References: <3AA30A91.B5842678@agile.tv> <20010305114926.A26862@bacchus.dhis.org> <3AA45523.CDF351CB@agile.tv> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <3AA45523.CDF351CB@agile.tv>; from ldavies@agile.tv on Tue, Mar 06, 2001 at 01:10:27PM +1000 X-Accept-Language: de,en,fr Sender: owner-linux-mips@oss.sgi.com Precedence: bulk Return-Path: X-Orcpt: rfc822;linux-mips-outgoing On Tue, Mar 06, 2001 at 01:10:27PM +1000, Liam Davies wrote: > in terms of instruction encodings. I would have thought the cpu would have > crapped out when it hit bad instructions. So it would seem the > exceptions were occurring but the code that it was executing wasn't even code. > Hence my assumption that we never got a TLB refill., even though the fault > handler was being called. Probably somewhere in the garbage there was another memory reference which resulted in a second TLB exception, at that time a store to 0x10004f4c which then got handled via the general exception handler and resulted in do_page_fault being called. Ralf