On Wed, Sep 05, 2018 at 08:53:17AM -0700, Eduardo Valentin wrote: > On Wed, Sep 05, 2018 at 10:52:12AM +0200, Peter Zijlstra wrote: > > On Thu, Aug 23, 2018 at 08:07:32AM -0700, Eduardo Valentin wrote: > > > On a system with X86_FEATURE_ARCH_PERFMON disabled > > > and with a model not known by family PMU drivers, > > > user gets a kernel message log like the following: > > > [ 0.100114] Performance Events: unsupported p6 CPU model 85 no PMU > > > driver, software events only. > > > > > > The "unsupported .. CPU" part may be confusing for some > > > users leading to wrong understanding that the kernel > > > does not support the CPU model. > > > > Send them back to first grade, such that they might learn to read? > > > > :-)
I think it's a valid concern, I guess Eduardo actually has real people who got confused. -Andi
