[S390] kprobes: insn slots

The s390 architecture can execute code on kmalloc/vmalloc memory.
No need for the __ARCH_WANT_KPROBES_INSN_SLOT detour.

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

1 files changed, 0 insertions, 8 deletions

diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index f68eaaaa8062..61f0b6c3618c 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -126,10 +126,6 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
         if (is_prohibited_opcode((kprobe_opcode_t *) p->addr))
                 return -EINVAL;
 
-        /* Use the get_insn_slot() facility for correctness */
-        if (!(p->ainsn.insn = get_insn_slot()))
-                return -ENOMEM;
-
         p->opcode = *p->addr;
         memcpy(p->ainsn.insn, p->addr, ((p->opcode >> 14) + 3) & -2);
 
@@ -173,10 +169,6 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
 
 void __kprobes arch_remove_kprobe(struct kprobe *p)
 {
-        if (p->ainsn.insn) {
-                free_insn_slot(p->ainsn.insn, 0);
-                p->ainsn.insn = NULL;
-        }
 }
 
 static void __kprobes enable_singlestep(struct kprobe_ctlblk *kcb,