2  * Page fault handler for SH with an MMU.
7  *  Based on linux/arch/i386/mm/fault.c:
157 		 * be another reason for the fault. Return NULL here to  in vmalloc_sync_one()
158 		 * signal that we have not taken care of the fault.  in vmalloc_sync_one()
174  * Handle a fault on the vmalloc or module mapping area
225 	/* Are we prepared to handle this kernel fault?  */  in no_context()
314 	       unsigned long address, vm_fault_t fault)  in mm_fault_error()  argument
320 	if (fault_signal_pending(fault, regs)) {  in mm_fault_error()
327 	if (!(fault & VM_FAULT_RETRY))  in mm_fault_error()
330 	if (!(fault & VM_FAULT_ERROR))  in mm_fault_error()
333 	if (fault & VM_FAULT_OOM) {  in mm_fault_error()
342 		 * userspace (which will retry the fault, or kill us if we got  in mm_fault_error()
347 		if (fault & VM_FAULT_SIGBUS)  in mm_fault_error()
349 		else if (fault & VM_FAULT_SIGSEGV)  in mm_fault_error()
397 	vm_fault_t fault;  in do_page_fault()  local
405 	 * We fault-in kernel-space virtual memory on-demand. The  in do_page_fault()
426 	/* Only enable interrupts if they were on before the fault */  in do_page_fault()
434 	 * with pagefaults disabled then we must not take the fault:  in do_page_fault()
478 	 * If for any reason at all we couldn't handle the fault,  in do_page_fault()
480 	 * the fault.  in do_page_fault()
482 	fault = handle_mm_fault(vma, address, flags, regs);  in do_page_fault()
484 	if (unlikely(fault & (VM_FAULT_RETRY | VM_FAULT_ERROR)))  in do_page_fault()
485 		if (mm_fault_error(regs, error_code, address, fault))  in do_page_fault()
488 	/* The fault is fully completed (including releasing mmap lock) */  in do_page_fault()
489 	if (fault & VM_FAULT_COMPLETED)  in do_page_fault()
492 	if (fault & VM_FAULT_RETRY) {  in do_page_fault()