Linux 4.17 Getting A Fix

In Summary :


An AMD engineer noticed that with the existing Linux kernel code, using the MWAIT instruction is supported and used but on AMD CPUs but does not allow deeper c-states than C1 with current-generation hardware. The MWAIT x86 instruction is used as a hint for letting the processor enter a CPU-specific optimized state.

kindly refer the following link as follow up :


https://www.phoronix.com/scan.php?page=news_item&px=Linux-4.17-AMD-Power-Fix