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

[Peter Lieven <pl@dlh.net>]

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
>
>
>
>