[PATCH v4 2/9] powerpc/kprobes: Move kprobes over to patch_instruction

Balbir Singh bsingharora at gmail.com
Tue Jun 27 17:48:56 AEST 2017


arch_arm/disarm_probe use direct assignment for copying
instructions, replace them with patch_instruction

Signed-off-by: Balbir Singh <bsingharora at gmail.com>
---
 arch/powerpc/kernel/kprobes.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index 01addfb..a52bae8 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -164,7 +164,7 @@ NOKPROBE_SYMBOL(arch_prepare_kprobe);
 
 void arch_arm_kprobe(struct kprobe *p)
 {
-	*p->addr = BREAKPOINT_INSTRUCTION;
+	patch_instruction(p->addr, BREAKPOINT_INSTRUCTION);
 	flush_icache_range((unsigned long) p->addr,
 			   (unsigned long) p->addr + sizeof(kprobe_opcode_t));
 }
@@ -172,7 +172,7 @@ NOKPROBE_SYMBOL(arch_arm_kprobe);
 
 void arch_disarm_kprobe(struct kprobe *p)
 {
-	*p->addr = p->opcode;
+	patch_instruction(p->addr, p->opcode);
 	flush_icache_range((unsigned long) p->addr,
 			   (unsigned long) p->addr + sizeof(kprobe_opcode_t));
 }
-- 
2.9.4



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