3  *  linux/arch/arm/mm/fault.c
26 #include "fault.h"
156 	 * Are we prepared to handle this kernel fault?  in __do_kernel_fault()
194 		pr_err("%s: unhandled page fault (%d) at 0x%08lx, code 0x%03x\n",  in __do_user_fault()
220 	 * have no context to handle this fault with.  in do_bad_area()
269 	vm_fault_t fault;  in do_page_fault()  local
283 	 * context, we must not take the fault..  in do_page_fault()
308 	 * routed via the translation fault mechanism. Check whether uaccess  in do_page_fault()
324 		fault = 0;  in do_page_fault()
328 	fault = handle_mm_fault(vma, addr, flags | FAULT_FLAG_VMA_LOCK, regs);  in do_page_fault()
329 	if (!(fault & (VM_FAULT_RETRY | VM_FAULT_COMPLETED)))  in do_page_fault()
332 	if (!(fault & VM_FAULT_RETRY)) {  in do_page_fault()
337 	if (fault & VM_FAULT_MAJOR)  in do_page_fault()
341 	if (fault_signal_pending(fault, regs)) {  in do_page_fault()
351 		fault = 0;  in do_page_fault()
358 	 * permissions on the VMA allow for the fault which occurred.  in do_page_fault()
362 		fault = 0;  in do_page_fault()
367 	fault = handle_mm_fault(vma, addr & PAGE_MASK, flags, regs);  in do_page_fault()
373 	if (fault_signal_pending(fault, regs)) {  in do_page_fault()
379 	/* The fault is fully completed (including releasing mmap lock) */  in do_page_fault()
380 	if (fault & VM_FAULT_COMPLETED)  in do_page_fault()
383 	if (!(fault & VM_FAULT_ERROR)) {  in do_page_fault()
384 		if (fault & VM_FAULT_RETRY) {  in do_page_fault()
394 	if (likely(!(fault & VM_FAULT_ERROR)))  in do_page_fault()
401 	 * have no context to handle this fault with.  in do_page_fault()
406 	if (fault & VM_FAULT_OOM) {  in do_page_fault()
409 		 * userspace (which will retry the fault, or kill us if we  in do_page_fault()
416 	if (fault & VM_FAULT_SIGBUS) {  in do_page_fault()
419 		 * successfully fix up this page fault.  in do_page_fault()
447  * First Level Translation Fault Handler
553  * This abort handler always returns "fault".
600 	pr_alert("Unhandled fault: %s (0x%03x) at 0x%08lx\n",  in do_DataAbort()
664 				"I-cache maintenance fault");  in exceptions_init()
673 				"section access flag fault");  in exceptions_init()
675 				"section access flag fault");  in exceptions_init()