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Re: [Xen-devel] HPET enabled in BIOS, not presented as available_clocksource -- config, kernel code, &/or BIOS?

From Juergen Gross <jgross@suse.com>
Newsgroups linux.kernel
Subject Re: [Xen-devel] HPET enabled in BIOS, not presented as available_clocksource -- config, kernel code, &/or BIOS?
Date 2017-05-14 19:20 +0200
Message-ID <tH5lv-4r8-7@gated-at.bofh.it> (permalink)
References (4 earlier) <tGLd8-82A-9@gated-at.bofh.it> <tGLd8-82A-7@gated-at.bofh.it> <tGLmN-88a-5@gated-at.bofh.it> <tGLwt-8r2-7@gated-at.bofh.it> <tGLG9-8uV-5@gated-at.bofh.it>
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On 13/05/17 22:16, Andrew Cooper wrote:
> On 13/05/2017 21:05, PGNet Dev wrote:
>> 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.
> 
> We don't have code like that in upstream Xen.  No function with that
> name, or a string which looks like that error message.

This is a Linux kernel message.


Juergen

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HPET enabled in BIOS, not presented as available_clocksource --  config, kernel code, &/or BIOS? PGNet Dev <pgnet.dev@gmail.com> - 2017-05-13 04:40 +0200
  Re: HPET enabled in BIOS, not presented as available_clocksource --  config, kernel code, &/or BIOS? Randy Dunlap <rdunlap@infradead.org> - 2017-05-13 19:50 +0200
    Re: HPET enabled in BIOS, not presented as available_clocksource --  config, kernel code, &/or BIOS? PGNet Dev <pgnet.dev@gmail.com> - 2017-05-13 20:30 +0200
      Re: HPET enabled in BIOS, not presented as available_clocksource --  config, kernel code, &/or BIOS? Randy Dunlap <rdunlap@infradead.org> - 2017-05-13 21:30 +0200
        Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? PGNet Dev <pgnet.dev@gmail.com> - 2017-05-13 21:50 +0200
          Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? Andrew Cooper <andrew.cooper3@citrix.com> - 2017-05-13 22:00 +0200
            Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? PGNet Dev <pgnet.dev@gmail.com> - 2017-05-13 22:10 +0200
              Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? Andrew Cooper <andrew.cooper3@citrix.com> - 2017-05-13 22:20 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? PGNet Dev <pgnet.dev@gmail.com> - 2017-05-13 23:10 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? Juergen Gross <jgross@suse.com> - 2017-05-14 19:20 +0200
              Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? Valentin Vidic <Valentin.Vidic@CARNet.hr> - 2017-05-13 22:30 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? PGNet Dev <pgnet.dev@gmail.com> - 2017-05-13 23:10 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? Valentin Vidic <Valentin.Vidic@CARNet.hr> - 2017-05-13 23:40 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? PGNet Dev <pgnet.dev@gmail.com> - 2017-05-14 00:00 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? Valentin Vidic <Valentin.Vidic@CARNet.hr> - 2017-05-14 00:20 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? PGNet Dev <pgnet.dev@gmail.com> - 2017-05-14 01:20 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? Andrew Cooper <andrew.cooper3@citrix.com> - 2017-05-14 17:50 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? Randy Dunlap <rdunlap@infradead.org> - 2017-05-14 19:50 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? "Austin S. Hemmelgarn" <ahferroin7@gmail.com> - 2017-05-15 20:10 +0200
                Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? PGNet Dev <pgnet.dev@gmail.com> - 2017-05-17 02:20 +0200
        Re: [Xen-devel] HPET enabled in BIOS, not presented as  available_clocksource -- config, kernel code, &/or BIOS? Andrew Cooper <andrew.cooper3@citrix.com> - 2017-05-13 22:10 +0200
    Re: HPET enabled in BIOS, not presented as available_clocksource --  config, kernel code, &/or BIOS? PGNet Dev <pgnet.dev@gmail.com> - 2017-05-13 22:00 +0200
    Re: HPET enabled in BIOS, not presented as available_clocksource --  config, kernel code, &/or BIOS? Clemens Ladisch <clemens@ladisch.de> - 2017-05-13 22:00 +0200

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