__HYPERCALL_ARG3REG  101 include/asm-x86/xen/hypercall.h 	register unsigned long __arg3 asm(__HYPERCALL_ARG3REG) = __arg3; \
__HYPERCALL_ARG3REG  127 include/asm-x86/xen/hypercall.h #define __HYPERCALL_CLOBBER2	__HYPERCALL_CLOBBER3, __HYPERCALL_ARG3REG