diff options
Diffstat (limited to 'arch/s390/mm/fault.c')
| -rw-r--r-- | arch/s390/mm/fault.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 9564fc779b2..a9a301866b3 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -307,7 +307,7 @@ static inline int do_exception(struct pt_regs *regs, int access, #ifdef CONFIG_PGSTE if (test_tsk_thread_flag(current, TIF_SIE) && S390_lowcore.gmap) { - address = gmap_fault(address, + address = __gmap_fault(address, (struct gmap *) S390_lowcore.gmap); if (address == -EFAULT) { fault = VM_FAULT_BADMAP; @@ -393,7 +393,7 @@ void __kprobes do_protection_exception(struct pt_regs *regs, long pgm_int_code, int fault; /* Protection exception is suppressing, decrement psw address. */ - regs->psw.addr -= (pgm_int_code >> 16); + regs->psw.addr = __rewind_psw(regs->psw, pgm_int_code >> 16); /* * Check for low-address protection. This needs to be treated * as a special case because the translation exception code @@ -454,7 +454,7 @@ int __handle_fault(unsigned long uaddr, unsigned long pgm_int_code, int write) struct pt_regs regs; int access, fault; - regs.psw.mask = psw_kernel_bits; + regs.psw.mask = psw_kernel_bits | PSW_MASK_DAT | PSW_MASK_MCHECK; if (!irqs_disabled()) regs.psw.mask |= PSW_MASK_IO | PSW_MASK_EXT; regs.psw.addr = (unsigned long) __builtin_return_address(0); @@ -587,8 +587,13 @@ static void pfault_interrupt(unsigned int ext_int_code, } else { /* Completion interrupt was faster than initial * interrupt. Set pfault_wait to -1 so the initial - * interrupt doesn't put the task to sleep. */ - tsk->thread.pfault_wait = -1; + * interrupt doesn't put the task to sleep. + * If the task is not running, ignore the completion + * interrupt since it must be a leftover of a PFAULT + * CANCEL operation which didn't remove all pending + * completion interrupts. */ + if (tsk->state == TASK_RUNNING) + tsk->thread.pfault_wait = -1; } put_task_struct(tsk); } else { |