Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759356Ab0FJSm3 (ORCPT ); Thu, 10 Jun 2010 14:42:29 -0400 Received: from mail-iw0-f174.google.com ([209.85.214.174]:64607 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756284Ab0FJSm1 convert rfc822-to-8bit (ORCPT ); Thu, 10 Jun 2010 14:42:27 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=e0V9wZ3Xxx5Ra8te5BNtgt2OupsE9+L4rSeJQJuD+gjF+YP5XGLMYRzSuAp0/dLOd8 zli2axN3kGWlcsXMyv087NFRSs5vuv8+/iVYmji3wnmR2VJjB91ubFSBIpcV+5i/c/dr mv3pxAWaVZ0A32NudOQ/7hSHcgcsniwIw2E1k= MIME-Version: 1.0 In-Reply-To: <4C112E7B.1040101@nortel.com> References: <4C112E7B.1040101@nortel.com> Date: Thu, 10 Jun 2010 12:42:27 -0600 Message-ID: Subject: Re: Aerospace and linux From: Brian Gordon To: Chris Friesen Cc: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1161 Lines: 25 > I do work in telco stuff. ?We use ECC RAM, turn on ECC/parity on the > various buses, enable error-checking in the hardware, etc. Excellent stuff when you have it. :) > At higher abstraction levels you can checksum the data being stored and > validate it when you access it. What about .ro and .text sections of an executable? I would think kernel support for that would be required. If its application data, then all sorts of things are possible like you described. Ive also seen critical ram variables be stored in triplicate and then compared/voted just to ensure no silent SEU corruption. > You might start by taking a look at the "edac" code in the kernel. > Linux in general doesn't normally enable all the fault detection code, > so you may need to start looking at datasheets. Thank you for the suggestion. If the memory device supports EDAC/ECC then definitely enabling it is a good strategy. -- 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/