diff --git a/hypervisor/arch/x86/guest/vm.c b/hypervisor/arch/x86/guest/vm.c
index c8f48af57..c8197d60b 100644
--- a/hypervisor/arch/x86/guest/vm.c
+++ b/hypervisor/arch/x86/guest/vm.c
@@ -32,6 +32,7 @@
 #include <pci_dev.h>
 #include <vacpi.h>
 #include <platform_caps.h>
+#include <mmio_dev.h>
 
 vm_sw_loader_t vm_sw_loader;
 
@@ -257,6 +258,10 @@ static void prepare_prelaunched_vm_memmap(struct acrn_vm *vm, const struct acrn_
 			remaining_hpa_size = vm_config->memory.size_hpa2;
 		}
 	}
+
+	for (i = 0U; i < MAX_MMIO_DEV_NUM; i++) {
+		(void)assign_mmio_dev(vm, &vm_config->mmiodevs[i]);
+	}
 }
 
 /**
@@ -328,6 +333,10 @@ static void prepare_sos_vm_memmap(struct acrn_vm *vm)
 		if (vm_config->load_order == PRE_LAUNCHED_VM) {
 			ept_del_mr(vm, pml4_page, vm_config->memory.start_hpa, vm_config->memory.size);
 		}
+
+		for (i = 0U; i < MAX_MMIO_DEV_NUM; i++) {
+			(void)deassign_mmio_dev(vm, &vm_config->mmiodevs[i]);
+		}
 	}
 
 	/* unmap AP trampoline code for security
diff --git a/hypervisor/include/arch/x86/vm_config.h b/hypervisor/include/arch/x86/vm_config.h
index 66ae37b7f..4f4f8df67 100644
--- a/hypervisor/include/arch/x86/vm_config.h
+++ b/hypervisor/include/arch/x86/vm_config.h
@@ -14,6 +14,7 @@
 #include <vm_uuids.h>
 #include <vm_configurations.h>
 #include <sgx.h>
+#include <acrn_hv_defs.h>
 
 #define CONFIG_MAX_VM_NUM	(PRE_VM_NUM + SOS_VM_NUM + MAX_POST_VM_NUM)
 
@@ -33,6 +34,8 @@
 #define PCI_DEV_TYPE_HVEMUL	(1U << 1U)
 #define PCI_DEV_TYPE_SOSEMUL	(1U << 2U)
 
+#define MAX_MMIO_DEV_NUM	2U
+
 #define CONFIG_SOS_VM		.load_order = SOS_VM,	\
 				.uuid = SOS_VM_UUID,	\
 				.severity = SEVERITY_SOS,	\
@@ -174,6 +177,8 @@ struct acrn_vm_config {
 							 */
 
 	struct vuart_config vuart[MAX_VUART_NUM_PER_VM];/* vuart configuration for VM */
+
+	struct acrn_mmiodev mmiodevs[MAX_MMIO_DEV_NUM];
 } __aligned(8);
 
 struct acrn_vm_config *get_vm_config(uint16_t vm_id);