X86_FEATURE_CX16  127 arch/x86/include/asm/cpufeatures.h #define X86_FEATURE_CX16		( 4*32+13) /* CMPXCHG16B instruction */
X86_FEATURE_CX16  127 tools/arch/x86/include/asm/cpufeatures.h #define X86_FEATURE_CX16		( 4*32+13) /* CMPXCHG16B instruction */