From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760468AbXEJKJx (ORCPT ); Thu, 10 May 2007 06:09:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758781AbXEJKJo (ORCPT ); Thu, 10 May 2007 06:09:44 -0400 Received: from mu-out-0910.google.com ([209.85.134.190]:28334 "EHLO mu-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758951AbXEJKJn (ORCPT ); Thu, 10 May 2007 06:09:43 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=e1PjApI4tJktyYm83BvcIoCXncOgPgGZcElSK5+RnHB5MDO/tJ2o4MpwaXHFBLR97htAKb1tvlgOXltK3Rq2AtJ8RwgHyvKEL261mbTo0yIKwfFVpt3FuO4lWQ4OXttcaVnxv1/k9I9xYqGDHMk/s884cx+mB0PAHQFhNMJQBUg= Message-ID: Date: Thu, 10 May 2007 18:09:42 +0800 From: "Zhao Forrest" To: "Andi Kleen" Subject: Re: [discuss] A question about GART aperture unmap Cc: discuss@x86-64.org, linux-kernel@vger.kernel.org In-Reply-To: <20070510094908.GB14898@one.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070510094908.GB14898@one.firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 5/10/07, Andi Kleen wrote: > > After commenting out clear_kernel_mapping() line, the system would > > have sync flood and reset from time to time. However when with this > > clear_kernel_mapping() line, no system reset happened. > > Hmm, that should not happen. Normally the problems fixed by > this are expected to be very rare and you also should not get > sync flood, but just cache line corruption. While it might be possible > for random corruption to then cause sync flood that should be again > rather unlikely. If it's repeatable quickly something else > must be wrong. The log recorded in IPMI SEL log showed that there's a GART error: 3f01 | OEM record e0 | 1800000000f60000010005001b GART Forrest