Mid 2010 MacBook Pro kernel_task extremely high CPU usage (150%+) lags and kernel panics
The line you have quoted is not an indication of CPU issues - you seem to be misinterpreting that.

The meaning of that line is that the kernel (i.e. the operating system core) failed because of a page fault. A page fault means that the operating system core tried to access a part of memory that isn't accessible to it (i.e. not mapped). This should not happen.

The causes of this are either a software bug or software incompatibility (for example if you run an operating system version earlier than the one originally supplied with the computer), or it is a hardware error. Usually the hardware error is due to defective RAM or insufficient cooling. 

Page faults caused by defective CPUs are extremely rare.