[S390] kprobes: single stepped breakpoint

Remove special case of a kprobe on a breakpoint while a relocated
instruction is single stepped. The only instruction that may cause
a fault while kprobe single stepping is active is the relocated
instruction. There is no kprobe on the instruction slot retrieved
with get_insn_slot().

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 0 insertions, 6 deletions

diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 2564793ec2b..b8e51759b6e 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -273,12 +273,6 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
         if (kprobe_running()) {
                 p = get_kprobe(addr);
                 if (p) {
-                        if (kcb->kprobe_status == KPROBE_HIT_SS &&
-                            *p->ainsn.insn == BREAKPOINT_INSTRUCTION) {
-                                regs->psw.mask &= ~PSW_MASK_PER;
-                                regs->psw.mask |= kcb->kprobe_saved_imask;
-                                goto no_kprobe;
-                        }
                         /* We have reentered the kprobe_handler(), since
                          * another probe was hit while within the handler.
                          * We here save the original kprobes variables and