From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: Divide error in kvm_unlock_kick() Date: Thu, 29 May 2014 19:51:18 +0200 Message-ID: <53877396.8010503@redhat.com> References: <20140528164231.GA8888@arachsys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: Chris Webb , virtualization@lists.linux-foundation.org, kvm@vger.kernel.org Return-path: Received: from mail-wg0-f42.google.com ([74.125.82.42]:58983 "EHLO mail-wg0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932640AbaE2RvW (ORCPT ); Thu, 29 May 2014 13:51:22 -0400 Received: by mail-wg0-f42.google.com with SMTP id y10so773462wgg.13 for ; Thu, 29 May 2014 10:51:21 -0700 (PDT) In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: Il 29/05/2014 19:45, Chris Webb ha scritto: > Chris Webb wrote: > >> My CPU flags inside the crashing guest look like this: >> >> fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush >> mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb lm rep_good nopl >> extd_apicid pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic popcnt aes xsave >> avx f16c hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse >> 3dnowprefetch osvw xop fma4 tbm arat npt nrip_save tsc_adjust bmi1 >> >> whereas in a (working) -cpu qemu64 guest, they look like this: >> >> fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx >> fxsr sse sse2 ht syscall nx lm nopl pni cx16 x2apic popcnt hypervisor lahf_lm >> cmp_legacy svm abm sse4a > > I thought I'd try to bisect on processor flags to see which was/were > implicated. Can you dump the full /proc/cpuinfo? Paolo