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[Xen-devel][PATCH] Set xen as default cpufreq, set userspace as default governor

Set userspace governor as default, which stays same effect
as when cpufreq in xen is not enabled. As a result, enable cpufreq
in xen by default to avoid reboot to activate cpufreq. Now it's
always on but w/o performance impact if user doesn't tempt
to change governor. We also add some warning info for debug.

Signed-off-by: Liu, Jinsong <jinsong.liu@xxxxxxxxx>

Attachment: px-xen-2-set-default.patch
Description: px-xen-2-set-default.patch

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