Virtual machine logs messages like "kernel: kvm: 5955: cpu2 unimplemented perfctr wrmsr: 0x186 data 0x530079"

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Issue

Customer gets the following message in the logs after a virtual machine starts:

Sep 25 17:47:34 localhost kernel: kvm: 5955: cpu2 unimplemented perfctr wrmsr: 0x186 data 0x530079
Sep 25 17:47:34 localhost kernel: kvm: 5955: cpu3 unimplemented perfctr wrmsr: 0x186 data 0x130079

Environment

Dom0 is Red Hat Enterprise Linux 5.5 x86_64.

HP P...

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