1 #define __percpu __attribute__((noderef, address_space(3))) 2 3 /* Turn v back into a normal var. */ 4 #define convert(v) \ 5 (*(typeof(v) __attribute__((address_space(0), force)) *)(&v)) 6 7 int main(int argc, char *argv) 8 { 9 unsigned int __percpu x; 10 11 convert(x) = 0; 12 return 0; 13 } 14 /* 15 * check-name: Rusty Russell's typeof attribute casting. 16 */ 17