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-rw-r--r--arch/powerpc/kernel/kprobes.c20
1 files changed, 1 insertions, 19 deletions
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index 11f5b03a0b06..2156ea90eb54 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -36,12 +36,6 @@
36#include <asm/sstep.h> 36#include <asm/sstep.h>
37#include <asm/uaccess.h> 37#include <asm/uaccess.h>
38 38
39#ifdef CONFIG_PPC_ADV_DEBUG_REGS
40#define MSR_SINGLESTEP (MSR_DE)
41#else
42#define MSR_SINGLESTEP (MSR_SE)
43#endif
44
45DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL; 39DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
46DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk); 40DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
47 41
@@ -104,19 +98,7 @@ void __kprobes arch_remove_kprobe(struct kprobe *p)
104 98
105static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs) 99static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
106{ 100{
107 /* We turn off async exceptions to ensure that the single step will 101 enable_single_step(regs);
108 * be for the instruction we have the kprobe on, if we dont its
109 * possible we'd get the single step reported for an exception handler
110 * like Decrementer or External Interrupt */
111 regs->msr &= ~MSR_EE;
112 regs->msr |= MSR_SINGLESTEP;
113#ifdef CONFIG_PPC_ADV_DEBUG_REGS
114 regs->msr &= ~MSR_CE;
115 mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM);
116#ifdef CONFIG_PPC_47x
117 isync();
118#endif
119#endif
120 102
121 /* 103 /*
122 * On powerpc we should single step on the original 104 * On powerpc we should single step on the original