Kernel driver coretemp
  ======================
  
  Supported chips:
    * All Intel Core family
      Prefix: 'coretemp'

      CPUID: family 0x6, models 0xe (Pentium M DC), 0xf (Core 2 DC 65nm),
                                0x16 (Core 2 SC 65nm), 0x17 (Penryn 45nm),

                                0x1a (Nehalem), 0x1c (Atom), 0x1e (Lynnfield)

      Datasheet: Intel 64 and IA-32 Architectures Software Developer's Manual
                 Volume 3A: System Programming Guide

                 http://softwarecommunity.intel.com/Wiki/Mobility/720.htm

  
  Author: Rudolf Marek
  
  Description
  -----------

  This driver permits reading the DTS (Digital Temperature Sensor) embedded
  inside Intel CPUs. This driver can read both the per-core and per-package
  temperature using the appropriate sensors. The per-package sensor is new;
  as of now, it is present only in the SandyBridge platform. The driver will
  show the temperature of all cores inside a package under a single device
  directory inside hwmon.

  Temperature is measured in degrees Celsius and measurement resolution is
  1 degree C. Valid temperatures are from 0 to TjMax degrees C, because
  the actual value of temperature register is in fact a delta from TjMax.

  Temperature known as TjMax is the maximum junction temperature of processor,
  which depends on the CPU model. See table below. At this temperature, protection

  mechanism will perform actions to forcibly cool down the processor. Alarm
  may be raised, if the temperature grows enough (more than TjMax) to trigger
  the Out-Of-Spec bit. Following table summarizes the exported sysfs files:

  All Sysfs entries are named with their core_id (represented here by 'X').
  tempX_input	 - Core temperature (in millidegrees Celsius).
  tempX_max	 - All cooling devices should be turned on (on Core2).
  tempX_crit	 - Maximum junction temperature (in millidegrees Celsius).
  tempX_crit_alarm - Set when Out-of-spec bit is set, never clears.

  		   Correct CPU operation is no longer guaranteed.

  tempX_label	 - Contains string "Core X", where X is processor
  		   number. For Package temp, this will be "Physical id Y",
  		   where Y is the package number.

  On CPU models which support it, TjMax is read from a model-specific register.
  On other models, it is set to an arbitrary value based on weak heuristics.
  If these heuristics don't work for you, you can pass the correct TjMax value
  as a module parameter (tjmax).

  
  Appendix A. Known TjMax lists (TBD):
  Some information comes from ark.intel.com
  
  Process		Processor					TjMax(C)
  
  32nm		Core i3/i5/i7 Processors
  		i7 660UM/640/620, 640LM/620, 620M, 610E		105
  		i5 540UM/520/430, 540M/520/450/430		105
  		i3 330E, 370M/350/330				90 rPGA, 105 BGA
  		i3 330UM					105
  
  32nm		Core i7 Extreme Processors
  		980X						100
  
  32nm		Celeron Processors
  		U3400						105
  		P4505/P4500 					90
  
  45nm		Xeon Processors 5400 Quad-Core
  		X5492, X5482, X5472, X5470, X5460, X5450	85
  		E5472, E5462, E5450/40/30/20/10/05		85
  		L5408						95
  		L5430, L5420, L5410				70
  
  45nm		Xeon Processors 5200 Dual-Core
  		X5282, X5272, X5270, X5260			90
  		E5240						90
  		E5205, E5220					70, 90
  		L5240						70
  		L5238, L5215					95
  
  45nm		Atom Processors
  		D525/510/425/410				100
  		Z560/550/540/530P/530/520PT/520/515/510PT/510P	90
  		Z510/500					90
  		N475/470/455/450				100
  		N280/270					90
  		330/230						125
  
  45nm		Core2 Processors
  		Solo ULV SU3500/3300				100
  		T9900/9800/9600/9550/9500/9400/9300/8300/8100	105
  		T6670/6500/6400					105
  		T6600						90
  		SU9600/9400/9300				105
  		SP9600/9400					105
  		SL9600/9400/9380/9300				105
  		P9700/9600/9500/8800/8700/8600/8400/7570	105
  		P7550/7450					90
  
  45nm		Core2 Quad Processors
  		Q9100/9000					100
  
  45nm		Core2 Extreme Processors
  		X9100/9000					105
  		QX9300						100
  
  45nm		Core i3/i5/i7 Processors
  		i7 940XM/920					100
  		i7 840QM/820/740/720				100
  
  45nm		Celeron Processors
  		SU2300						100
  		900 						105
  
  65nm		Core2 Duo Processors
  		Solo U2200, U2100				100
  		U7700/7600/7500					100
  		T7800/7700/7600/7500/7400/7300/7250/7200/7100	100
  		T5870/5670/5600/5550/5500/5470/5450/5300/5270	100
  		T5250						100
  		T5800/5750/5200					85
  		L7700/7500/7400/7300/7200			100
  
  65nm		Core2 Extreme Processors
  		X7900/7800					100
  
  65nm		Core Duo Processors
  		U2500/2400					100
  		T2700/2600/2450/2400/2350/2300E/2300/2250/2050	100
  		L2500/2400/2300					100
  
  65nm		Core Solo Processors
  		U1500/1400/1300					100
  		T1400/1350/1300/1250				100
  
  65nm		Xeon Processors 5000 Quad-Core
  		X5000						90-95
  		E5000						80
  		L5000						70
  		L5318						95
  
  65nm		Xeon Processors 5000 Dual-Core
  		5080, 5063, 5060, 5050, 5030			80-90
  		5160, 5150, 5148, 5140, 5130, 5120, 5110	80
  		L5138						100
  
  65nm		Celeron Processors
  		T1700/1600					100
  		560/550/540/530					100