about apic in uniprocessor

about apic in uniprocessor

[Pengcheng Liu]

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hi, I'm using kvm-48 which has apic kernel support know.
But I found when working on uniprocessor, the ioapic of kvm is not used.
Kvm only use pic when it works on uniprocessor?
 
Best Regards
 
Pengcheng Liu
Software School, Fudan University
Tel: 86-021-51355363-18
MP: 86-13472527372
E_mail: pcliu-/yWxSo1oARqlxZx38haCkw@public.gmane.org
 

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Re: about apic in uniprocessor

[Dor Laor]

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Pengcheng Liu wrote:
> hi, I'm using kvm-48 which has apic kernel support know.
> But I found when working on uniprocessor, the ioapic of kvm is not used.
> Kvm only use pic when it works on uniprocessor?
What's the guest OS? If it is windows with standard HAL then you must 
change the HAL.
If it's Linux then you can add kernel cmdline param 'lapic'
Does --no-kvm-irqchip changes anything? [this means user space apic]
Dor
>  
> Best Regards
>  
> Pengcheng Liu
> Software School, Fudan University
> Tel: 86-021-51355363-18
> MP: 86-13472527372
> E_mail: pcliu-/yWxSo1oARqlxZx38haCkw@public.gmane.org <mailto:pcliu-/yWxSo1oARqlxZx38haCkw@public.gmane.org>
>  
> ------------------------------------------------------------------------
>
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