* Thus use this macro only when you are certain that "current" is current
* e.g. when dealing with signal frame setup code etc
*/
-#ifndef CONFIG_SMP
+#ifdef ARC_USE_SCRATCH_REG
#define pgd_offset_fast(mm, addr) \
({ \
pgd_t *pgd_base = (pgd_t *) read_aux_reg(ARC_REG_SCRATCH_DATA0); \