Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261994AbVDVLc1 (ORCPT ); Fri, 22 Apr 2005 07:32:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261997AbVDVLc0 (ORCPT ); Fri, 22 Apr 2005 07:32:26 -0400 Received: from [203.197.150.194] ([203.197.150.194]:728 "EHLO bhadra.amrita.ac.in") by vger.kernel.org with ESMTP id S261994AbVDVLcD (ORCPT ); Fri, 22 Apr 2005 07:32:03 -0400 X-Antivirus-Amrita-Mail-From: harish@amritapuri.amrita.edu via bhadra.amrita.ac.in X-Antivirus-Amrita: 1.24-st-qms (Clear:RC:1(127.0.0.1):. Processed in 0.032746 secs Process 18459) Message-ID: <47196.203.197.150.195.1114171742.squirrel@mail.amrita.ac.in> In-Reply-To: <20050420065751.GA9791@taniwha.stupidest.org> References: <42225.203.197.150.195.1113980805.squirrel@mail.amrita.ac.in> <20050420065751.GA9791@taniwha.stupidest.org> Date: Fri, 22 Apr 2005 17:39:02 +0530 (IST) Subject: Re: i830 lockup From: "Harish K Harshan" To: "Chris Wedgwood" Cc: linux-kernel@vger.kernel.org Reply-To: harish@amritapuri.amrita.edu User-Agent: SquirrelMail/1.4.4-1 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Priority: 3 (Normal) Importance: Normal Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1657 Lines: 42 Hello Chris, But the system works pretty fine when other applications are running. Oncei load the driver, the system gets messed up. Could it be the problem with the way I handle DMA and interrupts?? I mean, is it possible to mess up everything by wrong programming??? This driver works prefectly on the other IPCs we have, but not on the two-piece board (Chino-Laxons) systems we have. The DMA channels are both free before loading the drivers all the time, and one it is loaded, the /proc/dma file shows the DMA has been hooked properly. Could it still be the problem with the CPU/Cache/Chipset as you said? If yes, then why is it throwing up the error only when I load the driver? Or is it really the problem with the driver programming? Please let me know as soon as possible. Thank You in advance, Harish K Harshan. On Wed, April 20, 2005 12:27 pm, Chris Wedgwood said: > On Wed, Apr 20, 2005 at 12:36:45PM +0530, Harish K Harshan wrote: > >> CPU 0 : Machine Check Exception : 0000000000000004 >> Bank 0 : a200000084010400 >> Kernel panic : CPU context corrupt >> In interrupt handler - not syncing > > CPU got messed up... could be a bad CPU/cache/chipset or simply it's > over heating or has a bad powersupply. > ----------------------------------------- This email was sent using Amrita Mail. "Amrita Vishwa Vidyapeetham [Deemed University] - Amritapuri Campus" http://amritapuri.amrita.edu - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/