MSR_P6_PERFCTR0 385 arch/x86/include/asm/msr-index.h #define MSR_P6_PERFCTR0 0x000000c1 MSR_P6_PERFCTR0 614 tools/testing/selftests/kvm/include/x86_64/processor.h #define MSR_P6_PERFCTR0 0x000000c1