From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751266AbWF2Sy3 (ORCPT ); Thu, 29 Jun 2006 14:54:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751267AbWF2Sy3 (ORCPT ); Thu, 29 Jun 2006 14:54:29 -0400 Received: from smtp4.poczta.interia.pl ([80.48.65.7]:62733 "EHLO smtp4.poczta.interia.pl") by vger.kernel.org with ESMTP id S1751266AbWF2Sy2 (ORCPT ); Thu, 29 Jun 2006 14:54:28 -0400 Message-ID: <44A421D7.7050901@interia.pl> Date: Thu, 29 Jun 2006 20:54:15 +0200 From: =?ISO-8859-2?Q?Rafa=B3_Bilski?= User-Agent: Thunderbird 1.5.0.4 (X11/20060628) MIME-Version: 1.0 To: Bart Hartgers Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH] (Longhaul 1/5) PCI: Protect bus master DMA from Longhaul by rw semaphores References: <44A2C9A7.6060703@interia.pl> <1151581077.23785.9.camel@localhost.localdomain> <44A3C17F.3060204@etpmod.phys.tue.nl> <44A3DFDB.7050202@interia.pl> <44A3EEDC.30006@etpmod.phys.tue.nl> In-Reply-To: <44A3EEDC.30006@etpmod.phys.tue.nl> X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=ISO-8859-2 Content-Transfer-Encoding: 8bit X-EMID: 2eef6acc Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Maybe you need to do something with the cache bits in CR0 as well. It > could be something like that. Hardware can be stuborn. I remember the > old Winchips (C3 predecessors) hanging when trying to disable caching of > plain ram via MCR's for instance. > I did it like in chapter 10.5.3. Result is exacly the same - processor stops. If I set NW flag CPU is still going, but I have "exception in interrupt" message. I'm starting thinking that this will not work for "Nehemiah" core. Thanks Rafał ---------------------------------------------------------------------- PS. Fajny portal... >>> http://link.interia.pl/f196a