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[Xen-devel] FW: ACPI HPET Timer - Works on standard Kernel - Broken on X

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Subject: [Xen-devel] FW: ACPI HPET Timer - Works on standard Kernel - Broken on Xen Kernel
From: "Robert Dunkley" <Robert@xxxxxxxxx>
Date: Thu, 28 Aug 2008 08:28:04 +0100
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Thread-topic: ACPI HPET Timer - Works on standard Kernel - Broken on Xen Kernel

Sorry to have to send this to the dev list but no one in the user list seems to know the answer and Google turned up nothing at all.

 

I have an error in my dmesg system log about hpet not correctly enabling:

hpet_acpi_add: no address or irqs in _CRS

 

The same kernel without Xen enables it fine:

hpet0: at MMIO 0xfed00000 (virtual 0xffffffffff5fe000), IRQs 2, 8, 31

hpet0: 3 32-bit timers, 25000000 Hz

hpet_resources: 0xfed00000 is busy

 

Do I have to pass an additional boot option? (ACPI is already enabled) or is there something wrong with my Xen Kernel build? Anyone have any idea why the Xen kernel would break hpet support? (I’m using default Centos 5.2 kernel and 3.2.1 stable)

 

Thanks,

 

Rob

 

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