prev_state = exception_enter();
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS,
1, regs, regs->cp0_badvaddr);
+
+#ifdef CONFIG_64BIT
+ /*
+ * check, if we are hitting space between CPU implemented maximum
+ * virtual user address and 64bit maximum virtual user address
+ * and do exception handling to get EFAULTs for get_user/put_user
+ */
+ if ((regs->cp0_badvaddr >= (1UL << cpu_vmbits)) &&
+ (regs->cp0_badvaddr < XKSSEG)) {
+ if (fixup_exception(regs)) {
+ current->thread.cp0_baduaddr = regs->cp0_badvaddr;
+ return;
+ }
+ goto sigbus;
+ }
+#endif
+
/*
* Did we catch a fault trying to load an instruction?
*/