diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c
index 3953fbd..485748c 100644
--- a/arch/powerpc/kernel/kvm.c
+++ b/arch/powerpc/kernel/kvm.c
@@ -171,6 +171,10 @@ static void kvm_patch_ins_mtmsrd(u32 *inst, u32 rt)
 	if (!p)
 		return;
 
+	if ((inst > kvm_emulate_mtmsrd) &&
+	    (inst < kvm_emulate_mtmsrd + kvm_emulate_mtmsrd_len))
+		return;
+
 	/* Find out where we are and put everything there */
 	distance_start = (ulong)p - (ulong)inst;
 	next_inst = ((ulong)inst + 4);
@@ -220,6 +224,11 @@ static void kvm_patch_ins_mtmsr(u32 *inst, u32 rt)
 	int distance_end;
 	ulong next_inst;
 
+	if ((inst > kvm_emulate_mtmsr) &&
+	    (inst < kvm_emulate_mtmsr + kvm_emulate_mtmsr_len))
+		return;
+
+
 	p = kvm_alloc(kvm_emulate_mtmsr_len * 4);
 	if (!p)
 		return;
@@ -281,6 +290,10 @@ static void kvm_patch_ins_wrtee(u32 *inst, u32 rt, int imm_one)
 	int distance_end;
 	ulong next_inst;
 
+	if ((inst > kvm_emulate_wrtee) &&
+	    (inst < kvm_emulate_wrtee + kvm_emulate_wrtee_len))
+		return;
+
 	p = kvm_alloc(kvm_emulate_wrtee_len * 4);
 	if (!p)
 		return;
@@ -338,6 +351,10 @@ static void kvm_patch_ins_wrteei_0(u32 *inst)
 	int distance_end;
 	ulong next_inst;
 
+	if ((inst > kvm_emulate_wrteei_0) &&
+	    (inst < kvm_emulate_wrteei_0 + kvm_emulate_wrteei_0_len))
+		return;
+
 	p = kvm_alloc(kvm_emulate_wrteei_0_len * 4);
 	if (!p)
 		return;