Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart

[linux-drm-fsl-dcu.git] / arch / s390 / kernel / traps.c

diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 3cbb0dcf1f1dc845d744077c95c416796e85ddb0..f0e5a320e2ec4d5e43a94802643bcc722017002e 100644 (file)
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -283,7 +283,7 @@ char *task_show_regs(struct task_struct *task, char *buffer)
        return buffer;
 }
 
-DEFINE_SPINLOCK(die_lock);
+static DEFINE_SPINLOCK(die_lock);
 
 void die(const char * str, struct pt_regs * regs, long err)
 {
@@ -364,8 +364,7 @@ void __kprobes do_single_step(struct pt_regs *regs)
                force_sig(SIGTRAP, current);
 }
 
-asmlinkage void
-default_trap_handler(struct pt_regs * regs, long interruption_code)
+static void default_trap_handler(struct pt_regs * regs, long interruption_code)
 {
         if (regs->psw.mask & PSW_MASK_PSTATE) {
                local_irq_enable();
@@ -376,7 +375,7 @@ default_trap_handler(struct pt_regs * regs, long interruption_code)
 }
 
 #define DO_ERROR_INFO(signr, str, name, sicode, siaddr) \
-asmlinkage void name(struct pt_regs * regs, long interruption_code) \
+static void name(struct pt_regs * regs, long interruption_code) \
 { \
         siginfo_t info; \
         info.si_signo = signr; \
@@ -442,7 +441,7 @@ do_fp_trap(struct pt_regs *regs, void __user *location,
                "floating point exception", regs, &si);
 }
 
-asmlinkage void illegal_op(struct pt_regs * regs, long interruption_code)
+static void illegal_op(struct pt_regs * regs, long interruption_code)
 {
        siginfo_t info;
         __u8 opcode[6];
@@ -491,8 +490,15 @@ asmlinkage void illegal_op(struct pt_regs * regs, long interruption_code)
 #endif
                } else
                        signal = SIGILL;
-       } else
-               signal = SIGILL;
+       } else {
+               /*
+                * If we get an illegal op in kernel mode, send it through the
+                * kprobes notifier. If kprobes doesn't pick it up, SIGILL
+                */
+               if (notify_die(DIE_BPT, "bpt", regs, interruption_code,
+                              3, SIGTRAP) != NOTIFY_STOP)
+                       signal = SIGILL;
+       }
 
 #ifdef CONFIG_MATHEMU
         if (signal == SIGFPE)
@@ -585,7 +591,7 @@ DO_ERROR_INFO(SIGILL, "specification exception", specification_exception,
              ILL_ILLOPN, get_check_address(regs));
 #endif
 
-asmlinkage void data_exception(struct pt_regs * regs, long interruption_code)
+static void data_exception(struct pt_regs * regs, long interruption_code)
 {
        __u16 __user *location;
        int signal = 0;
@@ -675,7 +681,7 @@ asmlinkage void data_exception(struct pt_regs * regs, long interruption_code)
        }
 }
 
-asmlinkage void space_switch_exception(struct pt_regs * regs, long int_code)
+static void space_switch_exception(struct pt_regs * regs, long int_code)
 {
         siginfo_t info;