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

To: "Bei Guan" <gbtju85@xxxxxxxxx>
From: "Jan Beulich" <JBeulich@xxxxxxxx>
Date: Wed, 28 Mar 2012 14:00:27 +0100
Cc: xen-devel <xen-devel@xxxxxxxxxxxxx>, "Andrei E. Warkentin" <andrey.warkentin@xxxxxxxxx>
Delivery-date: Wed, 28 Mar 2012 13:00:16 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

>>> 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.

Jan


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