[Qemu-devel] Re: Live Migration of 32-bit Linux guest broken since 2.6.35-rc2

[Avi Kivity]

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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