DEBUGCTLMSR_BTF   234 arch/x86/include/asm/msr-index.h #define DEBUGCTLMSR_BTF			(1UL <<  1) /* single-step on branches */
DEBUGCTLMSR_BTF   464 tools/testing/selftests/kvm/include/x86_64/processor.h #define DEBUGCTLMSR_BTF			(1UL <<  1) /* single-step on branches */