MSR_IA32_MISC_ENABLE_FAST_STRING_BIT  653 arch/x86/include/asm/msr-index.h #define MSR_IA32_MISC_ENABLE_FAST_STRING		(1ULL << MSR_IA32_MISC_ENABLE_FAST_STRING_BIT)
MSR_IA32_MISC_ENABLE_FAST_STRING_BIT  884 tools/testing/selftests/kvm/include/x86_64/processor.h #define MSR_IA32_MISC_ENABLE_FAST_STRING		(1ULL << MSR_IA32_MISC_ENABLE_FAST_STRING_BIT)