[SOLVED] How to read PPIN directly (linux)

[pro lamer]

FWIW:
I'm posting this since it took me more than one webpage to learn by myself

Way of checking PPIN of an Intel CPU (some Xeons):

1. Enable this feature in BIOS
2. Instal msr-tools (at least this is the package name on arch linux)
3. Run the code (omitting sudo stuff for simplicity)

   # rdmsr 0x4f

4. Check output ;-)
5. Disable the feature in BIOS ;-)