Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761761AbXEJKTa (ORCPT ); Thu, 10 May 2007 06:19:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759803AbXEJKOs (ORCPT ); Thu, 10 May 2007 06:14:48 -0400 Received: from ug-out-1314.google.com ([66.249.92.170]:8964 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760945AbXEJKOr (ORCPT ); Thu, 10 May 2007 06:14:47 -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=YPJIjnm8d1GdJ/mGwunOtkekfMkcsDzTry+mVFuufUfWTu4M81DP0o4B/eKcUvpKw8IRXEFiZzPMlqPoaP0VLgnS63tydfvC2fLEcqM9EiubeNlLDAd5nb1rYTydUHCQZbmljphofCM7TBzaO/84kT1gRCmTGPUXw6fVJBZ5lNE= Message-ID: Date: Thu, 10 May 2007 18:14:45 +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 Content-Length: 1012 Lines: 22 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. Sorry, I missed the last sentence. This bug is reproduced by copying a large file(8G) and in the meanwhile compiling a linux kernel for about 1 to 2 days. Forrest - 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/