From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on sa.int.altlinux.org X-Spam-Level: X-Spam-Status: No, score=-1.3 required=5.0 tests=AWL,BAYES_00, DNS_FROM_OPENWHOIS autolearn=no version=3.2.5 Date: Fri, 24 Sep 2010 17:29:05 +0300 From: Michael Shigorin To: devel-kernel@lists.altlinux.org Message-ID: <20100924142905.GN15790@osdn.org.ua> Mail-Followup-To: devel-kernel@lists.altlinux.org Mime-Version: 1.0 Content-Type: text/plain; charset=koi8-r Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.4.2.1i Subject: [d-kernel] CONFIG_X86_PPRO_FENCE X-BeenThere: devel-kernel@lists.altlinux.org X-Mailman-Version: 2.1.12 Precedence: list Reply-To: shigorin@gmail.com, ALT Linux kernel packages development List-Id: ALT Linux kernel packages development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Sep 2010 14:29:11 -0000 Archived-At: List-Archive: List-Post: Здравствуйте. > CONFIG_X86_PPRO_FENCE=y Old PentiumPro multiprocessor systems had errata that could cause memory operations to violate the x86 ordering standard in rare cases. Enabling this option will attempt to work around some (but not all) occurances of this problem, at the cost of much heavier spinlock and memory barrier operations. If unsure, say n here. Even distro kernels should think twice before enabling this: there are few systems, and an unlikely bug. Просто к сведению -- в tmc-tc это отключено. -- ---- WBR, Michael Shigorin ------ Linux.Kiev http://www.linux.kiev.ua/