From mboxrd@z Thu Jan 1 00:00:00 1970 From: "SourceForge.net" Subject: [ kvm-Bugs-2835276 ] segfault using -cpu pentium3 on coreduo Date: Thu, 03 Mar 2011 11:36:35 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" To: noreply@sourceforge.net Return-path: Received: from ch3.sourceforge.net ([216.34.181.60]:36477 "EHLO ch3.sourceforge.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751325Ab1CCLgh (ORCPT ); Thu, 3 Mar 2011 06:36:37 -0500 Sender: kvm-owner@vger.kernel.org List-ID: Bugs item #2835276, was opened at 2009-08-11 03:38 Message generated for change (Comment added) made by jessorensen You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2835276&group_id=180599 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: qemu Group: None >Status: Closed >Resolution: Works For Me Priority: 5 Private: No Submitted By: Aron Griffis (agriffis) Assigned to: Nobody/Anonymous (nobody) Summary: segfault using -cpu pentium3 on coreduo Initial Comment: qemu-0.11.0-rc1 and qemu-kvm-HEAD segfault with -cpu pentium3 on ProLiant DL380 G5 (dual-socket dual-core Intel Xeon 5160). This is a regression from qemu-0.10.6 which does not have the problem. Using -cpu coreduo avoids the segfault. -cpu athlon works too. I bisected to find that the problem is introduced by 0ed8cfc05bb012e52b92771bb13bef0e2e80c828 and can be worked around by the following patch to HEAD which effectively reverts that commit: --- a/hw/pc.c +++ b/hw/pc.c @@ -1096,11 +1096,11 @@ CPUState *pc_new_cpu(const char *cpu_model) } if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) { env->cpuid_apic_id = env->cpu_index; - /* APIC reset callback resets cpu */ - apic_init(env); } else { qemu_register_reset((QEMUResetHandler*)cpu_reset, env); } + /* APIC reset callback resets cpu */ + apic_init(env); /* kvm needs this to run after the apic is initialized. Otherwise, * it can access invalid state and crash. ---------------------------------------------------------------------- >Comment By: Jes Sorensen (jessorensen) Date: 2011-03-03 12:36 Message: Tested current qemu and qemu-kvm, both works with pentium3 and coreduo, so bug looks to have been fixed. Jes ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2835276&group_id=180599