DEBUGCTLMSR_LBR   232 arch/x86/include/asm/msr-index.h #define DEBUGCTLMSR_LBR			(1UL <<  0) /* last branch recording */
DEBUGCTLMSR_LBR   462 tools/testing/selftests/kvm/include/x86_64/processor.h #define DEBUGCTLMSR_LBR			(1UL <<  0) /* last branch recording */