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Date:   Sat, 13 May 2017 13:05:22 -0700
From:   PGNet Dev <>
To:     Andrew Cooper <>,
        Randy Dunlap <>,
        "" <>,
        Clemens Ladisch <>,
Subject: Re: [Xen-devel] HPET enabled in BIOS, not presented as
 available_clocksource -- config, kernel code, &/or BIOS?

On 5/13/17 12:59 PM, Andrew Cooper wrote:
> Ok.  Lack of a clocksource is to be expected.
> The reason why the HPETs are unavailable is that dom0 is not a position
> to program them; dom0 doesn't know what Xen has set up in the IDT.
> Use `xl dmesg` to get to the hypervisor dmesg log.  You should see
> mention of the HPET in there if Xen has found it.

back to the error at hand ...

  xl dmesg | grep -i hpet
   [    1.365876] hpet_acpi_add: no address or irqs in _CRS
   [    1.365876] hpet_acpi_add: no address or irqs in _CRS

again, only present when booting with Xen.

same kernel, no Xen, no such error.

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