diff --git a/arch/arm64/kernel/mikc.c b/arch/arm64/kernel/mikc.c
index 2c052b98..21a57150 100644
--- a/arch/arm64/kernel/mikc.c
+++ b/arch/arm64/kernel/mikc.c
@@ -19,7 +19,7 @@ int ihk_mc_ikc_init_first_local(struct ihk_ikc_channel_desc *channel,
 
 	memset(channel, 0, sizeof(struct ihk_ikc_channel_desc));
 
-	mikc_queue_pages = ((4 * num_processors * MASTER_IKCQ_PKTSIZE)
+	mikc_queue_pages = ((8 * num_processors * MASTER_IKCQ_PKTSIZE)
 			+ (PAGE_SIZE - 1)) / PAGE_SIZE;
 
 	/* Place both sides in this side */
diff --git a/kernel/host.c b/kernel/host.c
index 490160d0..9c03b2e6 100644
--- a/kernel/host.c
+++ b/kernel/host.c
@@ -895,7 +895,7 @@ void init_host_ikc2linux(int linux_cpu)
 		param.port = 503;
 		param.intr_cpu = linux_cpu;
 		param.pkt_size = sizeof(struct ikc_scd_packet);
-		param.queue_size = 2 * num_processors * sizeof(struct ikc_scd_packet);
+		param.queue_size = 4 * num_processors * sizeof(struct ikc_scd_packet);
 		if (param.queue_size < PAGE_SIZE * 4) {
 			param.queue_size = PAGE_SIZE * 4;
 		}