MSR_AMD_PSTATE_DEF_BASE  413 arch/x86/include/asm/msr-index.h #define MSR_AMD_PSTATE_DEF_BASE		0xc0010064
MSR_AMD_PSTATE_DEF_BASE  822 tools/testing/selftests/kvm/include/x86_64/processor.h #define MSR_AMD_PSTATE_DEF_BASE		0xc0010064