From owner-freebsd-hackers@FreeBSD.ORG Wed Aug 26 14:44:08 2009 Return-Path: Delivered-To: freebsd-hackers@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 50B8C1065882 for ; Wed, 26 Aug 2009 14:44:08 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 800308FC18 for ; Wed, 26 Aug 2009 14:44:07 +0000 (UTC) Received: from odyssey.starpoint.kiev.ua (alpha-e.starpoint.kiev.ua [212.40.38.101]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id RAA06413 for ; Wed, 26 Aug 2009 17:44:06 +0300 (EEST) (envelope-from avg@icyb.net.ua) Message-ID: <4A954A35.4030207@icyb.net.ua> Date: Wed, 26 Aug 2009 17:44:05 +0300 From: Andriy Gapon User-Agent: Thunderbird 2.0.0.22 (X11/20090724) MIME-Version: 1.0 To: freebsd-hackers@FreeBSD.org X-Enigmail-Version: 0.95.7 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Subject: enable ECC in OS code? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Aug 2009 14:44:08 -0000 Here is a question that I am afraid I know an answer for. I have some ECC capable hardware: 1) Athlon II with embedded memory controller that can do ECC 2) DRAM modules with ECC Assuming that ECC data lanes are connected between the two on motherboard, and given that BIOS doesn't perform any ECC setup (nor there is any option to control that) - would it be possible to turn on ECC from OS code? Or is it too late in the game already? -- Andriy Gapon