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Re: [Xen-devel] [RFC] Remove the x86 Periodic 100HZ PIT Timer Interrupt


  • To: "Yu, Ke" <ke.yu@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Date: Tue, 08 Apr 2008 07:42:57 +0100
  • Delivery-date: Mon, 07 Apr 2008 23:43:57 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AciYkFQNYmyqI0NSRKuabH1qVznbFQABlbckAB8ySAAADBTheg==
  • Thread-topic: [Xen-devel] [RFC] Remove the x86 Periodic 100HZ PIT Timer Interrupt

On 8/4/08 02:29, "Yu, Ke" <ke.yu@xxxxxxxxx> wrote:

> The logic in my mind is as follow, just want to make sure it leave
> enough space for you to refine PIT handling logic.
> 1. when xen is booting, setup PIT timer interrupt
> 2. if Cyclone/HPET/ACPI PM timer is clock source, setup AC timer for the
> overflow handling
> 3. if not using PIT and CPU has APIC, then disable PIT timer interrupt.

This is close enough for me to tweak, so I'll be happy if you could make a
patch for this.

 Thanks,
 Keir



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