50 static inline int notify_page_fault(struct pt_regs *regs)  in notify_page_fault()  argument
55 	if (!user_mode(regs)) {  in notify_page_fault()
57 		if (kprobe_running() && kprobe_fault_handler(regs, 11))  in notify_page_fault()
65 static inline int notify_page_fault(struct pt_regs *regs)  in notify_page_fault()  argument
75 static int store_updates_sp(struct pt_regs *regs)  in store_updates_sp()  argument
79 	if (get_user(inst, (unsigned int __user *)regs->nip))  in store_updates_sp()
116 static int do_sigbus(struct pt_regs *regs, unsigned long address,  in do_sigbus()  argument
124 	if (!user_mode(regs))  in do_sigbus()
149 static int mm_fault_error(struct pt_regs *regs, unsigned long addr, int fault)  in mm_fault_error()  argument
164 		if (user_mode(regs))  in mm_fault_error()
181 		if (!user_mode(regs))  in mm_fault_error()
188 		return do_sigbus(regs, addr, fault);  in mm_fault_error()
208 int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,  in do_page_fault()  argument
217 	int trap = TRAP(regs);  in do_page_fault()
244 		rc = acop_handle_fault(regs, address, error_code);  in do_page_fault()
250 	if (notify_page_fault(regs))  in do_page_fault()
253 	if (unlikely(debugger_fault_handler(regs)))  in do_page_fault()
257 	if (!user_mode(regs) && (address >= TASK_SIZE)) {  in do_page_fault()
266 		do_break(regs, address, error_code);  in do_page_fault()
272 	if (!arch_irq_disabled_regs(regs))  in do_page_fault()
276 		if (!user_mode(regs)) {  in do_page_fault()
285 		       regs->nip, regs->msr);  in do_page_fault()
286 		die("Weird page fault", regs, SIGSEGV);  in do_page_fault()
289 	perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);  in do_page_fault()
296 	if (user_mode(regs))  in do_page_fault()
297 		store_update_sp = store_updates_sp(regs);  in do_page_fault()
299 	if (user_mode(regs))  in do_page_fault()
318 		if (!user_mode(regs) && !search_exception_tables(regs->nip))  in do_page_fault()
351 		struct pt_regs *uregs = current->thread.regs;  in do_page_fault()
435 		rc = mm_fault_error(regs, address, fault);  in do_page_fault()
451 				      regs, address);  in do_page_fault()
466 				      regs, address);  in do_page_fault()
485 	if (user_mode(regs)) {  in do_page_fault()
486 		_exception(SIGSEGV, regs, code, address);  in do_page_fault()
508 void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig)  in bad_page_fault()  argument
513 	if ((entry = search_exception_tables(regs->nip)) != NULL) {  in bad_page_fault()
514 		regs->nip = entry->fixup;  in bad_page_fault()
520 	switch (regs->trap) {  in bad_page_fault()
524 			"data at address 0x%08lx\n", regs->dar);  in bad_page_fault()
537 		regs->nip);  in bad_page_fault()
542 	die("Kernel access of bad area", regs, sig);  in bad_page_fault()