Re: trace in arch/x86/kernel/apic/apic.c:1309 setup_local_APIC

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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.

> 
>>
>> 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]  [<ffffffffb669c37b>] dump_stack+0x45/0x57
>>>> [    1.835799]  [<ffffffffb6080d67>] warn_slowpath_common+0x97/0xe0
>>>> [    1.835806]  [<ffffffffb6080dca>] warn_slowpath_null+0x1a/0x20
>>>> [    1.835813]  [<ffffffffb603eeb4>] setup_local_APIC+0x284/0x340
>>>> [    1.835824]  [<ffffffffb6d7c29d>] apic_bsp_setup+0x5b/0xb0
>>>> [    1.835832]  [<ffffffffb6d79fa7>]
>>>> native_smp_prepare_cpus+0x23b/0x295
>>>> [    1.835842]  [<ffffffffb6d6c1b9>] kernel_init_freeable+0xc7/0x20f
>>>> [    1.835853]  [<ffffffffb668d5c0>] ? rest_init+0x80/0x80
>>>> [    1.835860]  [<ffffffffb668d5ce>] kernel_init+0xe/0xf0
>>>> [    1.835870]  [<ffffffffb66a2fe2>] ret_from_fork+0x42/0x70
>>>> [    1.835877]  [<ffffffffb668d5c0>] ? 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
>>>> -- 
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> 
> 
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