From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 03 Feb 2006 13:17:09 +0000 (GMT) Received: from mipsfw.mips-uk.com ([194.74.144.146]:58901 "EHLO bacchus.net.dhis.org") by ftp.linux-mips.org with ESMTP id S8133382AbWBCNQu (ORCPT ); Fri, 3 Feb 2006 13:16:50 +0000 Received: from denk.linux-mips.net (denk.linux-mips.net [127.0.0.1]) by bacchus.net.dhis.org (8.13.4/8.13.4) with ESMTP id k13DMHL0005692; Fri, 3 Feb 2006 13:22:17 GMT Received: (from ralf@localhost) by denk.linux-mips.net (8.13.4/8.13.4/Submit) id k12MBW44008823; Thu, 2 Feb 2006 22:11:32 GMT Date: Thu, 2 Feb 2006 22:11:32 +0000 From: Ralf Baechle To: Sergei Shtylylov Cc: Atsushi Nemoto , linux-mips@linux-mips.org Subject: Re: [PATCH] TX49 MFC0 bug workaround Message-ID: <20060202221132.GA8799@linux-mips.org> References: <20060203.013401.41198517.anemo@mba.ocn.ne.jp> <43E25381.4060309@ru.mvista.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <43E25381.4060309@ru.mvista.com> User-Agent: Mutt/1.4.2.1i Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 10326 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Thu, Feb 02, 2006 at 09:46:25PM +0300, Sergei Shtylylov wrote: > Atsushi Nemoto wrote: > >If mfc0 $12 follows store and the mfc0 is last instruction of a > >page and fetching the next instruction causes TLB miss, the result > >of the mfc0 might wrongly contain EXL bit. > > Hmm, a TLB miss in fetching from KSEG0?! It'll hit loadable modules which run in the mapped KSEG2/3 spaces. Ralf