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Diffstat (limited to 'arch/s390/kernel/traps.c')
-rw-r--r--arch/s390/kernel/traps.c29
1 files changed, 3 insertions, 26 deletions
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 6b8703ec2ae6..c5bd36fae56b 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -57,7 +57,6 @@ int sysctl_userprocess_debug = 0;
57 57
58extern pgm_check_handler_t do_protection_exception; 58extern pgm_check_handler_t do_protection_exception;
59extern pgm_check_handler_t do_dat_exception; 59extern pgm_check_handler_t do_dat_exception;
60extern pgm_check_handler_t do_pseudo_page_fault;
61#ifdef CONFIG_PFAULT 60#ifdef CONFIG_PFAULT
62extern int pfault_init(void); 61extern int pfault_init(void);
63extern void pfault_fini(void); 62extern void pfault_fini(void);
@@ -676,20 +675,6 @@ asmlinkage void kernel_stack_overflow(struct pt_regs * regs)
676 panic("Corrupt kernel stack, can't continue."); 675 panic("Corrupt kernel stack, can't continue.");
677} 676}
678 677
679#ifndef CONFIG_ARCH_S390X
680static int
681pagex_reboot_event(struct notifier_block *this, unsigned long event, void *ptr)
682{
683 if (MACHINE_IS_VM)
684 cpcmd("SET PAGEX OFF", NULL, 0, NULL);
685 return NOTIFY_DONE;
686}
687
688static struct notifier_block pagex_reboot_notifier = {
689 .notifier_call = &pagex_reboot_event,
690};
691#endif
692
693/* init is done in lowcore.S and head.S */ 678/* init is done in lowcore.S and head.S */
694 679
695void __init trap_init(void) 680void __init trap_init(void)
@@ -717,9 +702,7 @@ void __init trap_init(void)
717 pgm_check_table[0x11] = &do_dat_exception; 702 pgm_check_table[0x11] = &do_dat_exception;
718 pgm_check_table[0x12] = &translation_exception; 703 pgm_check_table[0x12] = &translation_exception;
719 pgm_check_table[0x13] = &special_op_exception; 704 pgm_check_table[0x13] = &special_op_exception;
720#ifndef CONFIG_ARCH_S390X 705#ifdef CONFIG_ARCH_S390X
721 pgm_check_table[0x14] = &do_pseudo_page_fault;
722#else /* CONFIG_ARCH_S390X */
723 pgm_check_table[0x38] = &do_dat_exception; 706 pgm_check_table[0x38] = &do_dat_exception;
724 pgm_check_table[0x39] = &do_dat_exception; 707 pgm_check_table[0x39] = &do_dat_exception;
725 pgm_check_table[0x3A] = &do_dat_exception; 708 pgm_check_table[0x3A] = &do_dat_exception;
@@ -731,12 +714,10 @@ void __init trap_init(void)
731 pgm_check_table[0x40] = &do_monitor_call; 714 pgm_check_table[0x40] = &do_monitor_call;
732 715
733 if (MACHINE_IS_VM) { 716 if (MACHINE_IS_VM) {
717#ifdef CONFIG_PFAULT
734 /* 718 /*
735 * First try to get pfault pseudo page faults going. 719 * Try to get pfault pseudo page faults going.
736 * If this isn't available turn on pagex page faults.
737 */ 720 */
738#ifdef CONFIG_PFAULT
739 /* request the 0x2603 external interrupt */
740 if (register_early_external_interrupt(0x2603, pfault_interrupt, 721 if (register_early_external_interrupt(0x2603, pfault_interrupt,
741 &ext_int_pfault) != 0) 722 &ext_int_pfault) != 0)
742 panic("Couldn't request external interrupt 0x2603"); 723 panic("Couldn't request external interrupt 0x2603");
@@ -748,9 +729,5 @@ void __init trap_init(void)
748 unregister_early_external_interrupt(0x2603, pfault_interrupt, 729 unregister_early_external_interrupt(0x2603, pfault_interrupt,
749 &ext_int_pfault); 730 &ext_int_pfault);
750#endif 731#endif
751#ifndef CONFIG_ARCH_S390X
752 register_reboot_notifier(&pagex_reboot_notifier);
753 cpcmd("SET PAGEX ON", NULL, 0, NULL);
754#endif
755 } 732 }
756} 733}