From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 17 Aug 2007 16:54:07 +0100 (BST) Received: from localhost.localdomain ([127.0.0.1]:56465 "EHLO dl5rb.ham-radio-op.net") by ftp.linux-mips.org with ESMTP id S20021785AbXHQPyF (ORCPT ); Fri, 17 Aug 2007 16:54:05 +0100 Received: from denk.linux-mips.net (denk.linux-mips.net [127.0.0.1]) by dl5rb.ham-radio-op.net (8.14.1/8.13.8) with ESMTP id l7HFs4YL006860; Fri, 17 Aug 2007 16:54:04 +0100 Received: (from ralf@localhost) by denk.linux-mips.net (8.14.1/8.14.1/Submit) id l7HFs4sn006859; Fri, 17 Aug 2007 16:54:04 +0100 Date: Fri, 17 Aug 2007 16:54:04 +0100 From: Ralf Baechle To: POORNIMA R Cc: linux-mips@linux-mips.org Subject: Re: [MIPS]mcheck error Message-ID: <20070817155403.GA4853@linux-mips.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.14 (2007-02-12) 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: 16212 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, Aug 16, 2007 at 01:34:13PM +0000, POORNIMA R wrote: > I am working on MIPS architecture and my kernel version > is linux-2.6.10 and I am a newbie to MIPS architecture. > If I try inserting any module (.ko), I get meck exception > due to multiple matching entries in TLB Linux 2.6.10 is now well over 2 1/2 years old so forgive if my memory on bugs that can cause machine checks is fading a little. You should upgrade. REALLY. > 1. What is the reason for multiple enteries in TLB > due to module insertion? A machine check exception will be generated if during a TLB lookup (for example during instruction fetch or loading/storing the data for a load rsp. store instruction) multiple entries match. > 2. Should the TLB operations be performed with interrupts disabled? Yes; the kernel does so. Ralf PS: Ditch that 2.6.10 antique! It belongs into a vitrine in the MIPSonian Institude, not a life a computer system :-) PPS: Have you considered upgrading your kernel?