From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe - Profihost AG Subject: Re: trace in arch/x86/kernel/apic/apic.c:1309 setup_local_APIC Date: Tue, 26 Jan 2016 12:40:27 +0100 Message-ID: <56A75B2B.6070609@profihost.ag> References: <56A62863.2020408@profihost.ag> <1453772817.3912.6.camel@intel.com> <56A71EAA.6060109@profihost.ag> <56A746E6.3020201@gmail.com> <56A74DC2.5090606@profihost.ag> <56A75AF0.1000407@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: "kvm@vger.kernel.org" , "qemu-devel@nongnu.org" To: Yang Zhang , "Han, Huaitong" Return-path: Received: from mail-ph.de-nserver.de ([85.158.179.214]:60255 "EHLO mail-ph.de-nserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965086AbcAZLk3 (ORCPT ); Tue, 26 Jan 2016 06:40:29 -0500 In-Reply-To: <56A75AF0.1000407@gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: Am 26.01.2016 um 12:39 schrieb Yang Zhang: > On 2016/1/26 18:43, Stefan Priebe - Profihost AG wrote: >> >> Am 26.01.2016 um 11:13 schrieb Yang Zhang: >>> On 2016/1/26 15:22, Stefan Priebe - Profihost AG wrote: >>>> Hi, >>>> >>>> Am 26.01.2016 um 02:46 schrieb Han, Huaitong: >>>>> What is the host kernel version and host dmesg information? And does >>>>> the problem exist when you use latest kernel and QEMU to replace old >>>>> binary file? >>>> >>>> Guest and Host is both 4.1.15. You mean the complete dmesg output from >>>> host? >>>> >>>> What do you mean with replace old binary file? I haven't tested Kernel >>>> 4.4 as we use 4.1 as it is a long term stable kernel release. >>> >>> Have you seen this before? I mean use the old KVM like 3.10? >> >> Guest or host? To test with a guest would be quite easy. Downgrading the >> host is very difficult not sure if the hw is supported. > > Host. Does the issue only exist on the Westmere CPU? Yes. All E5 Xeons v1, v2, v3 are working fine and i've never seen this message. Stefan > >> >>> >>>> >>>> Stefan >>>> >>>>> On Mon, 2016-01-25 at 14:51 +0100, Stefan Priebe - Profihost AG wrote: >>>>>> Hi, >>>>>> >>>>>> while running qemu 2.4 on whestmere CPUs i'm pretty often getting >>>>>> this >>>>>> one while booting: >>>>>> [ 0.811645] Switched APIC routing to physical x2apic. >>>>>> [ 1.835678] ------------[ cut here ]------------ >>>>>> [ 1.835704] WARNING: CPU: 0 PID: 1 at >>>>>> arch/x86/kernel/apic/apic.c:1309 setup_local_APIC+0x284/0x340() >>>>>> [ 1.835714] Modules linked in: >>>>>> [ 1.835724] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.1.15+72-ph >>>>>> #1 >>>>>> [ 1.835731] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), >>>>>> BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014 >>>>>> [ 1.835743] ffffffffb69ffcea ffff88042d5e3d68 ffffffffb669c37b >>>>>> 0000000000000918 >>>>>> [ 1.835754] 0000000000000000 ffff88042d5e3da8 ffffffffb6080d67 >>>>>> ffff88042d5e3da8 >>>>>> [ 1.835765] 0000000000000001 0000000000000000 0000000000008000 >>>>>> 0000000000000000 >>>>>> [ 1.835777] Call Trace: >>>>>> [ 1.835789] [] dump_stack+0x45/0x57 >>>>>> [ 1.835799] [] warn_slowpath_common+0x97/0xe0 >>>>>> [ 1.835806] [] warn_slowpath_null+0x1a/0x20 >>>>>> [ 1.835813] [] setup_local_APIC+0x284/0x340 >>>>>> [ 1.835824] [] apic_bsp_setup+0x5b/0xb0 >>>>>> [ 1.835832] [] >>>>>> native_smp_prepare_cpus+0x23b/0x295 >>>>>> [ 1.835842] [] kernel_init_freeable+0xc7/0x20f >>>>>> [ 1.835853] [] ? rest_init+0x80/0x80 >>>>>> [ 1.835860] [] kernel_init+0xe/0xf0 >>>>>> [ 1.835870] [] ret_from_fork+0x42/0x70 >>>>>> [ 1.835877] [] ? rest_init+0x80/0x80 >>>>>> [ 1.835891] ---[ end trace bdbe630a8de2832c ]--- >>>>>> [ 1.837613] Spurious LAPIC timer interrupt on cpu 0 >>>>>> [ 1.837957] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 >>>>>> [ 1.939574] smpboot: CPU0: Intel Westmere E56xx/L56xx/X56xx >>>>>> (Nehalem-C) (fam: 06, model: 2c, stepping: 01) >>>>>> [ 1.939630] Performance Events: unsupported p6 CPU model 44 no PMU >>>>>> driver, software events only. >>>>>> [ 1.950868] KVM setup paravirtual spinlock >>>>>> >>>>>> Greets, >>>>>> Stefan >>>>>> -- >>>>>> To unsubscribe from this list: send the line "unsubscribe kvm" in >>>>>> the body of a message to majordomo@vger.kernel.org >>>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>> -- >>>> To unsubscribe from this list: send the line "unsubscribe kvm" in >>>> the body of a message to majordomo@vger.kernel.org >>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>> >>> >>> > >