Re: [Qemu-devel] Suggested Parameters for SLES 10 64-bit

[Peter Lieven]

Alexander Graf wrote:
> Peter Lieven wrote:
>   
> > Alexander Graf wrote:
> >     
> > > Peter Lieven wrote:
> > >  
> > >       
> > > > we are running on intel xeons here:
> > > >     
> > > >         
> > > That might be the reason. Does it break when passing -no-kvm?
> > >
> > >  
> > >       
> > > > processor    : 0
> > > > vendor_id    : GenuineIntel
> > > > cpu family    : 6
> > > > model        : 26
> > > > model name    : Intel(R) Xeon(R) CPU           L5530  @ 2.40GHz
> > > > stepping    : 5
> > > > cpu MHz        : 2394.403
> > > > cache size    : 8192 KB
> > > > physical id    : 1
> > > > siblings    : 4
> > > > core id        : 0
> > > > cpu cores    : 4
> > > > apicid        : 16
> > > > initial apicid    : 16
> > > > fpu        : yes
> > > > fpu_exception    : yes
> > > > cpuid level    : 11
> > > > wp        : yes
> > > > flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
> > > > mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
> > > > syscall rdtscp lm constant_tsc arch_perfmon pebs bts rep_good
> > > > xtopology tsc_reliable nonstop_tsc pni dtes64 monitor ds_cpl vmx est
> > > > tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm tpr_shadow
> > > > vnmi flexpriority ept vpid
> > > > bogomips    : 4788.80
> > > > clflush size    : 64
> > > > cache_alignment    : 64
> > > > address sizes    : 40 bits physical, 48 bits virtual
> > > > power management:
> > > >
> > > > kvm-kmod is 2.6.32.7
> > > > ...
> > > >
> > > > which commandline parameters do you supply to qemu-kvm?
> > > >     
> > > >         
> > > None :)
> > >   
> > >       
> > It seems to stop working if i supply -no-kvm-irqchip. Can you try to
> > reproduce this?
> >
> > We introduced that parameter because we encountered some problems with
> > the e1000 kernel driver stopped to work in some
> > guests after live migration with a "nobody cared about interupt" (i
> > don't know the exact error anymore). supplying
> > -no-kvm-irqchip made live migration of these guests possible...
> > Sounds that familiar to someone?
> >     
>
> So it works with the in-kernel irqchip? That's the normally supported
> configuration anyways. If migration fails with that, that's a different
> thing and definitely needs to be addressed.
>   
Yes, it seems, I got the machine booting ~10 times without any problems.

I will try to reproduce the error condition after migration and come back
to the list.

Thanks for your help,
Peter
> Alex
>
>
>
>