Re: [Xen-devel] Questions on the PIT and APIC timer in Xen

[Bei Guan <gbtju85@xxxxxxxxx>]

2012/3/28 Jan Beulich <JBeulich@xxxxxxxx>

>>> On 28.03.12 at 09:31, Bei Guan <gbtju85@xxxxxxxxx> wrote:
> I wonder whether the PIT/APIC timer for HVM Guest OS is emulated by Xen or
> not.

Of course they are.

> What's difference between setting the boot PIT/APIC timer for a PV Guest OS
> and HVM Guest OS?

A PV guest can't make use of either.

Hi Jan, 

Thank you for your reply.

But, I also would like to know what timer a PV Guest OS on Xen use? And how does Xen set the timer for a PV Guest.

The same questions for a HVM Guest OS, how does Xen set the timer for a HVM? Thank you very much.

 

Jan

-- 
Best Regards,

Bei Guan

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