Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262173AbUKKFF1 (ORCPT ); Thu, 11 Nov 2004 00:05:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262176AbUKKFF0 (ORCPT ); Thu, 11 Nov 2004 00:05:26 -0500 Received: from ozlabs.org ([203.10.76.45]:5281 "EHLO ozlabs.org") by vger.kernel.org with ESMTP id S262173AbUKKFFV (ORCPT ); Thu, 11 Nov 2004 00:05:21 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16786.62032.421264.819206@cargo.ozlabs.ibm.com> Date: Thu, 11 Nov 2004 16:02:08 +1100 From: Paul Mackerras To: Jake Moilanen Cc: Leo Przybylski , Linux Kernel , "Martin J. Bligh" Subject: Re: Blast and data miscompare In-Reply-To: <20041109093400.34b49953@localhost> References: <41847C52.8030702@leosandbox.org> <20041109093400.34b49953@localhost> X-Mailer: VM 7.18 under Emacs 21.3.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 737 Lines: 21 Jake Moilanen writes: > Not sure if it's the same problem. But we were seeing a miscompare on > 2.4 due to a incorrect COW happening, followed by a hardware hash hole > w/ PPC64. > > To fix it we had to make sure that the PTE was cleared and the TLB's > flushed before the new PTE was established. > > Martin, was this fixed on 2.6? It can't happen on 2.6; when BenH rewrote the PTE handling in 2.6 earlier this year, this was one of the things we made sure couldn't be a problem. Paul. - 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/