Kernel driver pkgtemp======================Supported chips: * Intel family Prefix: 'pkgtemp' CPUID: Datasheet: Intel 64 and IA-32 Architectures Software Developer's Manual Volume 3A: System Programming GuideAuthor: Fenghua YuDescription-----------This driver permits reading package level temperature sensor embedded insideIntel CPU package. The sensors can be in core, uncore, memory controller, orother components in a package. The feature is first implemented in Intel SandyBridge platform.Temperature is measured in degrees Celsius and measurement resolution is1 degree C. Valid temperatures are from 0 to TjMax degrees C, because the actualvalue of temperature register is in fact a delta from TjMax.Temperature known as TjMax is the maximum junction temperature of package.We get this from MSR_IA32_TEMPERATURE_TARGET. If the MSR is not accessible,we define TjMax as 100 degrees Celsius. At this temperature, protectionmechanism will perform actions to forcibly cool down the package. Alarmmay be raised, if the temperature grows enough (more than TjMax) to triggerthe Out-Of-Spec bit. Following table summarizes the exported sysfs files:temp1_input - Package temperature (in millidegrees Celsius).temp1_max - All cooling devices should be turned on.temp1_crit - Maximum junction temperature (in millidegrees Celsius).temp1_crit_alarm - Set when Out-of-spec bit is set, never clears. Correct CPU operation is no longer guaranteed.