Re: Live Migration of 32-bit Linux guest broken since 2.6.35-rc2

Avi Kivity
2010-06-08T11:51:45Z

On 06/08/2010 02:31 PM, Avi Kivity wrote:
> On 06/08/2010 02:29 PM, Avi Kivity wrote:
>> On 06/08/2010 12:13 PM, Peter Lieven wrote:
>>> sorry, the subject should read 2.6.35-rc2
>>>
>>> Peter Lieven wrote:
>>>> Hi,
>>>>
>>>> I freshly installed kernel 2.6.35-rc2 using userspace qemu-kvm 0.12.4.
>>>>
>>>> When I live migrate a 32-bit opensuse-11.2 VM, the incoming VM shows
>>>> the following error after the mem transfer has finished:
>>>>
>>>> kvm: unhandled exit 80000022
>>>> kvm: kvm_run returned -22
>>>>
>>>> cmdline:
>>>> /usr/bin/qemu-kvm-0.12.4 -net none -drive
>>>> format=host_device,file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-e1861b105-4cb000e7e8c4bf3b-opensuse-11-2-i586,if=ide,boot=on,cache=none,aio=native
>>>> -m 1024 -monitor tcp:0:4003,server,nowait -vnc :3 -name
>>>> 'opensuse-11.2-i586' -boot order=dc,menu=on -k de -incoming
>>>> tcp:172.21.55.20:5003 -pidfile /var/run/qemu/vm-154.pid -mem-path
>>>> /hugepages -mem-prealloc -rtc base=utc -usb -usbdevice tablet -cpu
>>>> qemu64,model_id='Intel(R) Xeon(R) CPU E5430 @ 2.66GHz'
>>>>
>>>> Migrating the same VM worked with 2.6.34 kvm module.
>>
>>
>> Please provide you host /proc/cpuinfo.
>>
>
> Also, after migration fails, the output of 'info registers' in the
> monitor.
>

And finally, perhaps you have NX disabled in the bios of one of the
machines?

What does 'dmesg | grep NX' show on both hosts?

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