The skeleton was the cpuid driver.
The device file /dev/cpu/self/msr is open and read at the offset corresponding to the requested MSR. 64 bits are returned.
Included is a sample usage application that reads the Intel CPU cores temperature using various MSRs.
Issues:
wrmsruntested- no security checks
make install
A single socket machine (Xeon E3-1265L V2):
# ./cputemp
Found 8 CPU(s) in 1 socket(s)
Socket #0 temp : 41 °C
Core #0 temp : 35 °C
Core #1 temp : 37 °C
Core #2 temp : 33 °C
Core #3 temp : 41 °CA dual socket machine (Xeon E5506, no package thermal monitoring):
# ./cputemp
Found 8 CPU(s) in 2 socket(s)
Socket #0
Core #0 temp : 39 °C
Core #1 temp : 36 °C
Core #2 temp : 40 °C
Core #3 temp : 33 °C
Socket #1
Core #0 temp : 38 °C
Core #1 temp : 36 °C
Core #2 temp : 40 °C
Core #3 temp : 35 °C