On Fri, 15 Sep 2017, Thomas Gleixner wrote: > On Fri, 15 Sep 2017, kernel test robot wrote: > > [ 0.035023] CPU: Intel Common KVM processor (family: 0xf, model: 0x6, > > stepping: 0x1) > > [ 0.042302] Performance Events: unsupported Netburst CPU model 6 no PMU > > driver, software events only. > > Cute. So there is no supported PMU, but for some unknown reason the lockup > detector can create an event, otherwise the perf availaibility check in > lockup_detector_init() would fail .... > > Peter???
In my VM the corresponding dmesg is: [ 0.038086] Performance Events: unsupported p6 CPU model 61 no PMU driver, software events only. [ 0.041031] Hierarchical SRCU implementation. [ 0.046210] NMI watchdog: Perf event create on CPU 0 failed with -2 [ 0.046980] NMI watchdog: Perf NMI watchdog permanetely disabled Confused
