Read/write MSR (Model Specific Register) by python.
A MSR is any of various control registers in the x86 instruction set used for debugging, program execution tracing, computer performance monitoring, and toggling certain CPU features.
Use man msr for detail.
This library requires:
- Python under x86/x86_64 Linux OS.
- Root user permission.
- Already loaded msr module by command:
sudo modprobe msr
Download and decompress this package
sudo python3 setup.py build
sudo python3 setup.py install
from msreditor import MSR
if __name__ == "__main__":
a = MSR(0) # open msr of CPU 0
orig = a[0x38f] # read msr offset 0x38f
print(orig)
if int(orig) == 0x70000000f:
a[0x38f] = 0
else:
a[0x38f] = 0x70000000f # update value of 0x38f
print(a[0x38f])