On Fri, Dec 27, 2013 at 03:15:39PM +0100, Kashyap Chamarthy wrote: > [. . .] > > >> KVM does not emulate P-states at all. intel_pstate_init() calls > >> intel_pstate_msrs_not_valid() before printing "Intel P-state driver > >> initializing." which suppose to fail since it checks that two reads of > >> MSR_IA32_APERF return different values, but KVM does not emulate this msr > >> at all, so both calls should return zero (KVM suppose to inject #GP, all > >> rdmsrl > >> are patched to be rdmsrl_safe in a guest). > >> > >> Anything interesting in host dmesg? > > Heya Gleb, > > Here's the relevant dmesg snippet (full dmesg, refer the attachment below): That's guest dmesg. What about host one? Can you ftrace the failure?
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