* [Qemu-devel] qemu-kvm 0.14.0 and clocksource=acpi_pm
@ 2011-03-15 14:19 Peter Lieven
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From: Peter Lieven @ 2011-03-15 14:19 UTC (permalink / raw)
To: kvm, qemu-devel
Hi,
i'm currently testing qemu-kvm 0.14.0 in conjunction with Linux 2.6.38
on the host system.
As there are some old kernels out that support kvm_clock but not
reliably we used to run some
of them with clocksource=acpi_pm.
However, on this new combination of qemu-kvm and linux kernel I see the
following message
in the guests:
Override clocksource acpi_pm is not HRT compatible. Cannot switch while in
HRT/NOHZ mode
This used to work with qemu-kvm 0.12.5 and linux 2.6.34.
The guest is Ubuntu LTS 10.04.2 64-bit.
Has anyone a clue?
Additionally it would be great if someone who knows definetely would say
from with kernel
on clocksource=kvm_clock is stable (especially in conjunction with live
migration)
BR,
Peter
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2011-03-15 14:19 [Qemu-devel] qemu-kvm 0.14.0 and clocksource=acpi_pm Peter Lieven
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