127 	[T_PRIVINFLT] =	{ .ei = true,	.msg = "privileged instruction fault" },
128 	[T_BPTFLT] =	{ .ei = false,	.msg = "breakpoint instruction fault" },
130 	[T_PROTFLT] =	{ .ei = true,	.msg = "general protection fault" },
132 	[T_PAGEFLT] =	{ .ei = true,	.msg = "page fault" },
133 	[T_ALIGNFLT] = 	{ .ei = true,	.msg = "alignment fault" },
134 	[T_DIVIDE] =	{ .ei = true,	.msg = "integer divide fault" },
137 	[T_BOUND] =	{ .ei = true,	.msg = "FPU bounds check fault" },
139 	[T_DOUBLEFLT] =	{ .ei = false,	.msg = "double fault" },
140 	[T_FPOPFLT] =	{ .ei = true,	.msg = "FPU operand fetch fault" },
141 	[T_TSSFLT] =	{ .ei = true,	.msg = "invalid TSS fault" },
142 	[T_SEGNPFLT] =	{ .ei = true,	.msg = "segment not present fault" },
143 	[T_STKFLT] =	{ .ei = true,	.msg = "stack fault" },
210  * Exception, fault, and trap interface to the FreeBSD kernel.
268 	 * want to fault. On returning from the probe, the no-fault  in trap()
301 	 * spurious page fault.  in trap()
317 		case T_PRIVINFLT:	/* privileged instruction fault */  in trap()
322 		case T_BPTFLT:		/* bpt instruction fault */  in trap()
360 		case T_PROTFLT:		/* general protection fault */  in trap()
361 		case T_STKFLT:		/* stack fault */  in trap()
376 		case T_SEGNPFLT:	/* segment not present fault */  in trap()
380 		case T_TSSFLT:		/* invalid TSS fault */  in trap()
388 		case T_DOUBLEFLT:	/* double fault */  in trap()
394 		case T_PAGEFLT:		/* page fault */  in trap()
401 				 * treat the fault as an illegal instruction   in trap()
402 				 * (T_PRIVINFLT) instead of a page fault.  in trap()
414 		case T_DIVIDE:		/* integer divide fault */  in trap()
435 		case T_OFLOW:		/* integer overflow fault */  in trap()
440 		case T_BOUND:		/* bounds check fault */  in trap()
448 			/* transparent fault (due to context switch "late") */  in trap()
457 		case T_FPOPFLT:		/* FPU operand fetch fault */  in trap()
480 		case T_PAGEFLT:			/* page fault */  in trap()
493 		case T_FPOPFLT:		/* FPU operand fetch fault */  in trap()
506 		case T_PROTFLT:		/* general protection fault */  in trap()
507 		case T_STKFLT:		/* stack fault */  in trap()
523 		case T_SEGNPFLT:	/* segment not present fault */  in trap()
530 			 * underlying LDT entry.  This causes a fault  in trap()
552 			 * This causes a fault in kernel mode when the  in trap()
554 			 * to get this fault so that we can fix the  in trap()
604 			 * causes a TSS fault when the kernel attempts to  in trap()
606 			 * want to get this fault so that we can fix the  in trap()
728  * Handle all details of a page fault.
730  * -2 if the fault was caused by triggered workaround for Intel Pentium
732  * -1 if this fault was fatal, typically from kernel mode
734  * 0  if this fault was handled by updating either the user or kernel
736  * 1  if this fault was from usermode and it was not handled, a synchronous
760 		 * nonetheless cause one spurious page fault per virtual page.   in trap_pfault()
763 		 * every page fault is treated as a spurious page fault,  in trap_pfault()
765 		 * recent page fault within the same "no faulting" section.  in trap_pfault()
771 			 * flushed automatically by a page fault.  in trap_pfault()
779 		 * If we get a page fault while in a critical section, then  in trap_pfault()
780 		 * it is most likely a fatal kernel page fault.  The kernel  in trap_pfault()
786 		 * If we get a page fault while holding a non-sleepable  in trap_pfault()
787 		 * lock, then it is most likely a fatal kernel page fault.  in trap_pfault()
794 		    "Kernel page fault") != 0) {  in trap_pfault()
806 		 * fault.  in trap_pfault()
855 	/* Fault in the page. */  in trap_pfault()
905 		printf("fault virtual address	= 0x%x\n", eva);  in trap_fatal()
906 		printf("fault code		= %s %s%s, %s\n",  in trap_fatal()
951 		frame->tf_err = eva;	/* smuggle fault address to ddb */  in trap_fatal()
986  * Double fault handler. Called when a fault occurs while writing
993  * the time of the double fault is not available at <kstack> unless
994  * the machine was idle when the double fault occurred. The downside
1006 	printf("\nFatal double fault:\n");  in dblfault_handler()
1023 	panic("double fault");  in dblfault_handler()