> > > However, the typical BIOS fails to initialize the MSR, > > > and the typical Linux distro neglects to invoke x86_energy_perf_policy(8). > > > > > > The result is that some modern hardware is running in hardware default, > > > which is "performance" mode, rather than the intended design default > > > of "normal" mode. > > > > > > Initialize the MSR to the "normal" setting during kernel boot. > > > > > > Of course, x86_energy_perf_policy(8) is available to change > > > the default after boot, should the user have a policy preference. > > > > > > cc: stable@xxxxxxxxxx ... > Will it be possible to measure a performance difference between > "performance" and "normal"? Yes, it will be possible. Ok. So... what "serious bug" does this fix? You really need to use cc: stable less. Tweaking performance/power ratio is _not_ serious bug. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
