On 16.10.2014 00:53, Dimitri John Ledkov wrote: > #include <cpuid.h> > > And then use __get_cpuid() for cpuid. I believe it's possible to > retrieve it without being root that way. > As user-space libraries use that to check if they can/cannot execute > certain optimized instructions. > (e.g. checking for SSE) msr is where all the magic is for me.