From: PGNet Dev <pgnet.dev@gmail.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>,
Randy Dunlap <rdunlap@infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Clemens Ladisch <clemens@ladisch.de>,
xen-devel@lists.xenproject.org
Subject: Re: [Xen-devel] HPET enabled in BIOS, not presented as available_clocksource -- config, kernel code, &/or BIOS?
Date: Sat, 13 May 2017 13:05:22 -0700 [thread overview]
Message-ID: <dcd8d407-4597-b754-2efa-a81fcd9e8a83@gmail.com> (raw)
In-Reply-To: <be4448d3-7661-8653-c65f-2a023292b842@citrix.com>
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.
next prev parent reply other threads:[~2017-05-13 20:05 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-13 2:30 HPET enabled in BIOS, not presented as available_clocksource -- config, kernel code, &/or BIOS? PGNet Dev
2017-05-13 17:41 ` Randy Dunlap
2017-05-13 18:26 ` PGNet Dev
2017-05-13 19:28 ` Randy Dunlap
2017-05-13 19:38 ` [Xen-devel] " Andrew Cooper
2017-05-13 19:49 ` PGNet Dev
2017-05-13 19:59 ` Andrew Cooper
2017-05-13 20:05 ` PGNet Dev [this message]
2017-05-13 20:16 ` Andrew Cooper
2017-05-13 21:07 ` PGNet Dev
2017-05-14 17:13 ` Juergen Gross
2017-05-13 20:28 ` Valentin Vidic
2017-05-13 21:06 ` PGNet Dev
2017-05-13 21:32 ` Valentin Vidic
2017-05-13 21:58 ` PGNet Dev
2017-05-13 22:15 ` Valentin Vidic
2017-05-13 23:17 ` PGNet Dev
2017-05-14 15:39 ` Andrew Cooper
2017-05-14 17:41 ` Randy Dunlap
2017-05-15 18:06 ` Austin S. Hemmelgarn
2017-05-17 0:12 ` PGNet Dev
2017-05-17 0:15 ` PGNet Dev
2017-05-13 19:45 ` Clemens Ladisch
2017-05-13 19:52 ` PGNet Dev
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