From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yang Zhang Subject: Re: trace in arch/x86/kernel/apic/apic.c:1309 setup_local_APIC Date: Tue, 26 Jan 2016 19:50:56 +0800 Message-ID: <56A75DA0.4080700@gmail.com> 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> <56A75B2B.6070609@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Cc: "qemu-devel@nongnu.org" , "kvm@vger.kernel.org" To: Stefan Priebe - Profihost AG , "Han, Huaitong" Return-path: In-Reply-To: <56A75B2B.6070609@profihost.ag> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org Sender: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org List-Id: kvm.vger.kernel.org On 2016/1/26 19:40, Stefan Priebe - Profihost AG wrote: > > 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. Westmere doesn't have the x2apic support. It is strange to see it here. Can you try to disable x2apic manually on you Qemu cmdline? >>>>>>> [ 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 >>>>> >>>> >>>> >> >> -- best regards yang From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60875) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aO29P-0006Qp-QM for qemu-devel@nongnu.org; Tue, 26 Jan 2016 06:51:13 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aO29K-0006O2-K9 for qemu-devel@nongnu.org; Tue, 26 Jan 2016 06:51:11 -0500 Received: from mail-pf0-x243.google.com ([2607:f8b0:400e:c00::243]:36118) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aO29K-0006Nx-8I for qemu-devel@nongnu.org; Tue, 26 Jan 2016 06:51:06 -0500 Received: by mail-pf0-x243.google.com with SMTP id n128so8126635pfn.3 for ; Tue, 26 Jan 2016 03:51:06 -0800 (PST) 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> <56A75B2B.6070609@profihost.ag> From: Yang Zhang Message-ID: <56A75DA0.4080700@gmail.com> Date: Tue, 26 Jan 2016 19:50:56 +0800 MIME-Version: 1.0 In-Reply-To: <56A75B2B.6070609@profihost.ag> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] trace in arch/x86/kernel/apic/apic.c:1309 setup_local_APIC List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stefan Priebe - Profihost AG , "Han, Huaitong" Cc: "qemu-devel@nongnu.org" , "kvm@vger.kernel.org" On 2016/1/26 19:40, Stefan Priebe - Profihost AG wrote: > > 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. Westmere doesn't have the x2apic support. It is strange to see it here. Can you try to disable x2apic manually on you Qemu cmdline? >>>>>>> [ 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 >>>>> >>>> >>>> >> >> -- best regards yang