Tjmax value retrieved from MSR_IA32_TEMPERATURE_TARGET can be changed at runtime when the Intel SST-PP (Intel Speed Select Technology - Performance Profile) level is changed. As a result, the ttarget temperature also changes. Enhance the coretemp driver to always use updated tjmax when it can be retrieved from MSR_IA32_TEMPERATURE_TARGET. When tjmax can not be retrieved from MSR_IA32_TEMPERATURE_TARGET, stick with previous behavior and always use static value. Plus that ttarget is not available in this case. The same dynaimic tjmax enhancement, for driver/thermal drivers can be found at https://patchwork.kernel.org/project/linux-pm/list/?series=693050 thanks, rui
