EAX_EDX_RET        34 include/asm-x86/msr.h #define EAX_EDX_RET(val, low, high)	"=a" (low), "=d" (high)
EAX_EDX_RET        39 include/asm-x86/msr.h #define EAX_EDX_RET(val, low, high)	"=A" (val)