[Xen-bugs] [Bug 1412] New: Xen + CPUFreq - AMD P-States missing from config

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1412

           Summary: Xen + CPUFreq - AMD P-States missing from config
           Product: Xen
           Version: unstable
          Platform: x86-64
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Hardware Support
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: adwin.putteeraj@xxxxxxxxx


Using a Dom0 kernel disables the selection of P-States in kernel cpufreq
(Frequency Scaling) config (while leaving Powernowd enabled).

Booting in such a kernel sets the CPUs at their lowest P-State.
Xenpm is able to manage C-States but not P-States, and even leaving cpufreq to
dom0-kernel doesn't bring back the P-States.

Commenting the external processor depend in drivers/cpufreq/Kconfig enables the
selection of P-States, but compilation fails, since cpufreq is defined both in
xen and the kernel itself.


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