3  * Based on arch/arm/mm/fault.c
269 	 * If we now have a valid translation, treat the translation fault as  in is_spurious_el1_translation_fault()
276 	 * If we got a different type of fault from the AT instruction,  in is_spurious_el1_translation_fault()
277 	 * treat the translation fault as spurious.  in is_spurious_el1_translation_fault()
305 	 * Are we prepared to handle this kernel fault?  in __do_kernel_fault()
312 	    "Ignoring spurious kernel translation fault at virtual address %016lx\n", addr))  in __do_kernel_fault()
340 	 * an alignment fault not caused by the memory type would take  in set_thread_esr()
341 	 * precedence over translation fault for a real access to empty  in set_thread_esr()
342 	 * space. Unfortunately we can't easily distinguish "alignment fault  in set_thread_esr()
343 	 * not caused by memory type" from "alignment fault caused by memory  in set_thread_esr()
345 	 * fault.)  in set_thread_esr()
355 			 * We always report the ESR as if the fault was taken  in set_thread_esr()
357 			 * clear. (In fact it always will be a fault to EL1.)  in set_thread_esr()
365 			 * Claim a level 0 translation fault.  in set_thread_esr()
392 	 * handle this fault with.  in do_bad_area()
429 	 * Check that the permissions on the VMA allow for the fault which  in __do_page_fault()
444  * should fault. EL0 cannot issue DC IVAC (undef).
456 	vm_fault_t fault;  in do_page_fault()  local
465 	 * the fault.  in do_page_fault()
522 	fault = __do_page_fault(mm, addr, mm_flags, vm_flags, regs);  in do_page_fault()
525 	if (fault_signal_pending(fault, regs)) {  in do_page_fault()
531 	if (fault & VM_FAULT_RETRY) {  in do_page_fault()
542 	if (likely(!(fault & (VM_FAULT_ERROR | VM_FAULT_BADMAP |  in do_page_fault()
548 	 * handle this fault with.  in do_page_fault()
553 	if (fault & VM_FAULT_OOM) {  in do_page_fault()
556 		 * userspace (which will retry the fault, or kill us if we got  in do_page_fault()
565 	if (fault & VM_FAULT_SIGBUS) {  in do_page_fault()
568 		 * this page fault.  in do_page_fault()
572 	} else if (fault & (VM_FAULT_HWPOISON_LARGE | VM_FAULT_HWPOISON)) {  in do_page_fault()
576 		if (fault & VM_FAULT_HWPOISON_LARGE)  in do_page_fault()
577 			lsb = hstate_index_to_shift(VM_FAULT_GET_HINDEX(fault));  in do_page_fault()
587 				      fault == VM_FAULT_BADACCESS ? SEGV_ACCERR : SEGV_MAPERR,  in do_page_fault()
619 	return 1; /* "fault" */  in do_bad()
654 	{ do_bad,		SIGKILL, SI_KERNEL,	"ttbr address size fault"	},
655 	{ do_bad,		SIGKILL, SI_KERNEL,	"level 1 address size fault"	},
656 	{ do_bad,		SIGKILL, SI_KERNEL,	"level 2 address size fault"	},
657 	{ do_bad,		SIGKILL, SI_KERNEL,	"level 3 address size fault"	},
658 	{ do_translation_fault,	SIGSEGV, SEGV_MAPERR,	"level 0 translation fault"	},
659 	{ do_translation_fault,	SIGSEGV, SEGV_MAPERR,	"level 1 translation fault"	},
660 	{ do_translation_fault,	SIGSEGV, SEGV_MAPERR,	"level 2 translation fault"	},
661 	{ do_translation_fault,	SIGSEGV, SEGV_MAPERR,	"level 3 translation fault"	},
663 	{ do_page_fault,	SIGSEGV, SEGV_ACCERR,	"level 1 access flag fault"	},
664 	{ do_page_fault,	SIGSEGV, SEGV_ACCERR,	"level 2 access flag fault"	},
665 	{ do_page_fault,	SIGSEGV, SEGV_ACCERR,	"level 3 access flag fault"	},
667 	{ do_page_fault,	SIGSEGV, SEGV_ACCERR,	"level 1 permission fault"	},
668 	{ do_page_fault,	SIGSEGV, SEGV_ACCERR,	"level 2 permission fault"	},
669 	{ do_page_fault,	SIGSEGV, SEGV_ACCERR,	"level 3 permission fault"	},
671 	{ do_tag_check_fault,	SIGSEGV, SEGV_MTESERR,	"synchronous tag check fault"	},
687 	{ do_alignment_fault,	SIGBUS,  BUS_ADRALN,	"alignment fault"		},
703 	{ do_bad,		SIGKILL, SI_KERNEL,	"Unsupported atomic hardware update fault"	},
706 	{ do_bad,		SIGKILL, SI_KERNEL,	"implementation fault (lockdown abort)" },
707 	{ do_bad,		SIGBUS,  BUS_OBJERR,	"implementation fault (unsupported exclusive)" },
715 	{ do_bad,		SIGKILL, SI_KERNEL,	"section domain fault"		},
716 	{ do_bad,		SIGKILL, SI_KERNEL,	"page domain fault"		},
728 		pr_alert("Unhandled fault at 0x%016lx\n", addr);  in do_mem_abort()