https://bugzilla.kernel.org/show_bug.cgi?id=219044

--- Comment #3 from Nicolas Granger (nicolas.grange...@gmail.com) ---
Hi Perry,

CPPC seems indeed disabled. Is AMD in contact with vendors to push them to
enable it? They make people think AMD CPUs suck in idle power draw.

$ rdmsr 0xc00102b3 -a
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

$ rdmsr 0xc00102b0 -a
dc912a10
dc912a10dc912a10
e2912a10
e2912a10e2912a10
e8912a10
e8912a10e8912a10
d0912a10
d0912a10d0912a10
e8912a10
e8912a10e8912a10
d6912a10
d6912a10d6912a10
c4912a10
c4912a10c4912a10
ca912a10
ca912a10ca912a10

$ rdmsr 0xc00102b1 -a
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

$ cpuid
Leaf     Subleaf    EAX            EBX            ECX            EDX            
80000008 00000000:  00003030 00..  111ef257 W...  0000400f .@..  00010000 ....

$ python -c "print(0x111ef257 & (0x1 << 27))"
0

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