diff --git a/arch/x86/kernel/cpu.c b/arch/x86/kernel/cpu.c
index 067433f5..6a83759c 100644
--- a/arch/x86/kernel/cpu.c
+++ b/arch/x86/kernel/cpu.c
@@ -977,7 +977,7 @@ void handle_interrupt(int vector, struct x86_user_context *regs)
 	else {
 		list_for_each_entry(h, &handlers[vector - 32], list) {
 			if (h->func) {
-				h->func(h->priv);
+				h->func(h->priv, vector);
 			}
 		}
 	}
diff --git a/executer/kernel/mcctrl/ikc.c b/executer/kernel/mcctrl/ikc.c
index 791471f1..60174335 100644
--- a/executer/kernel/mcctrl/ikc.c
+++ b/executer/kernel/mcctrl/ikc.c
@@ -216,13 +216,6 @@ static void mcctrl_ikc_init(ihk_os_t os, int cpu, unsigned long rphys, struct ih
 
 static int connect_handler_ikc2linux(struct ihk_ikc_channel_info *param)
 {
-	struct ihk_ikc_channel_desc *c;
-	int linux_cpu;
-	ihk_os_t os = param->channel->remote_os;
-
-	c = param->channel;
-	linux_cpu = c->recv.queue->read_cpu;
-
 	param->packet_handler = syscall_packet_handler;
 
 	return 0;
diff --git a/kernel/host.c b/kernel/host.c
index a3bb2e9b..a55c49bd 100644
--- a/kernel/host.c
+++ b/kernel/host.c
@@ -728,6 +728,6 @@ void init_host_ikc2mckernel(void)
 	}
 	dkprintf("connected.\n");
 
-	ihk_ikc_set_intr_channel(NULL, param.channel, ihk_ikc_get_processor_id());
+	ihk_ikc_set_regular_channel(NULL, param.channel, ihk_ikc_get_processor_id());
 }
 
diff --git a/kernel/mem.c b/kernel/mem.c
index e1a198d5..ed437829 100644
--- a/kernel/mem.c
+++ b/kernel/mem.c
@@ -717,7 +717,7 @@ static struct ihk_mc_pa_ops allocator = {
 void sbox_write(int offset, unsigned int value);
 
 static int page_hash_count_pages(void);
-static void query_free_mem_interrupt_handler(void *priv)
+static void query_free_mem_interrupt_handler(void *priv, int vector)
 {
 	int i, pages = 0;
 
diff --git a/lib/include/ihk/cpu.h b/lib/include/ihk/cpu.h
index 71600773..bb4de8e4 100644
--- a/lib/include/ihk/cpu.h
+++ b/lib/include/ihk/cpu.h
@@ -29,7 +29,7 @@ unsigned long cpu_disable_interrupt_save(void);
 
 struct ihk_mc_interrupt_handler {
 	struct list_head list;
-	void (*func)(void *);
+	void (*func)(void *, int vector);
 	void *priv;
 };
 int ihk_mc_register_interrupt_handler(int vector,
@@ -38,7 +38,8 @@ int ihk_mc_unregister_interrupt_handler(int vector,
                                         struct ihk_mc_interrupt_handler *h);
 
 enum ihk_mc_gv_type {
-	IHK_GV_IKC = 1,
+	IHK_GV_IKC_MASTER = 0,
+	IHK_GV_IKC_REGULAR = 1,
 	IHK_GV_QUERY_FREE_MEM = 2
 };
 
@@ -109,7 +110,8 @@ enum ihk_asr_type {
 int ihk_mc_arch_set_special_register(enum ihk_asr_type, unsigned long value);
 int ihk_mc_arch_get_special_register(enum ihk_asr_type, unsigned long *value);
 
-extern unsigned int ihk_ikc_irq;
+extern unsigned int ihk_ikc_master_irq;
+extern unsigned int ihk_ikc_regular_irq;
 extern unsigned int ihk_ikc_irq_apicid;
 
 extern int gettime_local_support;