From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261827AbVGRQOa (ORCPT ); Mon, 18 Jul 2005 12:14:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261837AbVGRQO3 (ORCPT ); Mon, 18 Jul 2005 12:14:29 -0400 Received: from mxout2.netvision.net.il ([194.90.9.21]:32194 "EHLO mxout2.netvision.net.il") by vger.kernel.org with ESMTP id S261827AbVGRQNH (ORCPT ); Mon, 18 Jul 2005 12:13:07 -0400 Date: Mon, 18 Jul 2005 19:12:50 +0300 From: Maxim Kozover Subject: 2.6.12.3/2.6.13-rc3 BUG REPORT - x86_64 with hyperthreading To: linux-kernel@vger.kernel.org Reply-to: Maxim Kozover Message-id: <102574499.20050718191250@netvision.net.il> MIME-version: 1.0 X-Mailer: The Bat! (v3.5.30) Professional Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT X-Priority: 3 (Normal) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! I tried 2.6.12.3/2.6.13-rc3 compiled for x86_64 on Supermicro dual Xeon with hyperthreading enabled and the kernel gets stuck when trying to initialize the second CPU. CPU: Trace cache: 12K uops, L1 D cache: 16K CPU: L2 cache: 1024K using mwait in idle threads. CPU: Physical Processor ID: 0 CPU0: Thermal monitoring enabled (TM1) Using local APIC timer interrupts. Detected 12.501 MHz APIC timer. Booting processor 1/6 rip 6000 rsp ffff81007ff35f58 Initializing CPU#1 CPU: Trace cache: 12K uops, L1 D cache: 16K CPU: L2 cache: 1024K CPU: Physical Processor ID: 3 CPU1: Thermal monitoring enabled (TM1) Intel(R) Xeon(TM) CPU 2.80GHz stepping 01 CPU 1: Syncing TSC to CPU 0. Booting processor 2/1 rip 6000 rsp ffff8100032dff58 Initializing CPU#2 Booting with hyperthreading disabled is OK. Booting with hyperthreading enabled and maxcpus=1 is also OK. Here are board/bios details: Supermicro X6DH8-XG2/X6DHE-XG2 BIOS Rev 1.2a CPU = 4 - Intel(R) Xeon(TM) CPU 2.80GHz DRAM Type : DDR2-400 Hyper Threading Technology Enabled Please advise. Thanks, Maxim Kozover.