Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...

[pandora-kernel.git] / arch / powerpc / kernel / kprobes.c

diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index b36f074..bc47352 100644 (file)
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -114,6 +114,9 @@ static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
 #ifdef CONFIG_PPC_ADV_DEBUG_REGS
        regs->msr &= ~MSR_CE;
        mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM);
+#ifdef CONFIG_PPC_47x
+       isync();
+#endif
 #endif
 
        /*
@@ -375,17 +378,6 @@ static int __kprobes trampoline_probe_handler(struct kprobe *p,
  * single-stepped a copy of the instruction.  The address of this
  * copy is p->ainsn.insn.
  */
-static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
-{
-       int ret;
-       unsigned int insn = *p->ainsn.insn;
-
-       regs->nip = (unsigned long)p->addr;
-       ret = emulate_step(regs, insn);
-       if (ret == 0)
-               regs->nip = (unsigned long)p->addr + 4;
-}
-
 static int __kprobes post_kprobe_handler(struct pt_regs *regs)
 {
        struct kprobe *cur = kprobe_running();
@@ -403,7 +395,8 @@ static int __kprobes post_kprobe_handler(struct pt_regs *regs)
                cur->post_handler(cur, regs, 0);
        }
 
-       resume_execution(cur, regs);
+       /* Adjust nip to after the single-stepped instruction */
+       regs->nip = (unsigned long)cur->addr + 4;
        regs->msr |= kcb->kprobe_saved_msr;
 
        /*Restore back the original saved kprobes variables and continue. */