Revert "[PARISC] Optimize TLB flush on SMP systems"

This reverts commit 592ac93a607109e0643da6c23ae07ac749e973b1
which causes SMP machines with maxcpus > 1 to fail to boot...

include/asm-parisc/tlbflush.h

@@ -39,19 +39,21 @@ extern void flush_tlb_all_local(void *);
  * etc. do not do that).
  */
 
-static inline void __flush_tlb_mm(void *mmv)
-{
-	struct mm_struct *mm = (struct mm_struct *)mmv;
-	if (mm == current->active_mm)
-		load_context(mm->context);
-}
-
 static inline void flush_tlb_mm(struct mm_struct *mm)
 {
-	if (mm->context != 0)
-		free_sid(mm->context);
-	mm->context = alloc_sid();
-	on_each_cpu(__flush_tlb_mm, mm, 1, 1);
+	BUG_ON(mm == &init_mm); /* Should never happen */
+
+#ifdef CONFIG_SMP
+	flush_tlb_all();
+#else
+	if (mm) {
+		if (mm->context != 0)
+			free_sid(mm->context);
+		mm->context = alloc_sid();
+		if (mm == current->active_mm)
+			load_context(mm->context);
+	}
+#endif
 }
 
 extern __inline__ void flush_tlb_pgtables(struct mm_struct *mm, unsigned long start, unsigned long end)