diff --git a/hypervisor/arch/x86/guest/assign.c b/hypervisor/arch/x86/guest/assign.c
index 4d9938fd0..9c1857bfb 100644
--- a/hypervisor/arch/x86/guest/assign.c
+++ b/hypervisor/arch/x86/guest/assign.c
@@ -512,7 +512,7 @@ void ptirq_softirq(uint16_t pcpu_id)
 		} else {
 			if (vmsi != NULL) {
 				/* TODO: vmsi destmode check required */
-				(void)vlapic_intr_msi(entry->vm, vmsi->addr.full, vmsi->data.full);
+				(void)vlapic_inject_msi(entry->vm, vmsi->addr.full, vmsi->data.full);
 				dev_dbg(DBG_LEVEL_PTIRQ, "dev-assign: irq=0x%x MSI VR: 0x%x-0x%x",
 					entry->allocated_pirq, vmsi->data.bits.vector,
 					irq_to_vector(entry->allocated_pirq));
diff --git a/hypervisor/arch/x86/guest/vlapic.c b/hypervisor/arch/x86/guest/vlapic.c
index e3ca06725..d320238cb 100644
--- a/hypervisor/arch/x86/guest/vlapic.c
+++ b/hypervisor/arch/x86/guest/vlapic.c
@@ -1873,7 +1873,7 @@ vlapic_set_local_intr(struct acrn_vm *vm, uint16_t vcpu_id_arg, uint32_t lvt_ind
 }
 
 /**
- * @brief Inject MSI to target VM.
+ * @brief Inject MSI to target VM for case that local APIC is virtualized.
  *
  * @param[in] vm   Pointer to VM data structure
  * @param[in] addr MSI address.
@@ -1884,8 +1884,7 @@ vlapic_set_local_intr(struct acrn_vm *vm, uint16_t vcpu_id_arg, uint32_t lvt_ind
  *
  * @pre vm != NULL
  */
-int32_t
-vlapic_intr_msi(struct acrn_vm *vm, uint64_t addr, uint64_t msg)
+static int32_t inject_msi_for_non_lapic_pt(struct acrn_vm *vm, uint64_t addr, uint64_t msg)
 {
 	uint32_t delmode, vec;
 	uint32_t dest;
@@ -1933,7 +1932,7 @@ vlapic_intr_msi(struct acrn_vm *vm, uint64_t addr, uint64_t msg)
 /**
  *@pre Pointer vm shall point to SOS_VM
  */
-void inject_msi_lapic_pt(struct acrn_vm *vm, const struct acrn_msi_entry *vmsi)
+static void inject_msi_for_lapic_pt(struct acrn_vm *vm, uint64_t addr, uint64_t data)
 {
 	union apic_icr icr;
 	struct acrn_vcpu *vcpu;
@@ -1944,11 +1943,11 @@ void inject_msi_lapic_pt(struct acrn_vm *vm, const struct acrn_msi_entry *vmsi)
 	uint16_t vcpu_id;
 	bool phys;
 
-	vmsi_addr.full = vmsi->msi_addr;
-	vmsi_data.full = (uint32_t)vmsi->msi_data;
+	vmsi_addr.full = addr;
+	vmsi_data.full = (uint32_t)data;
 
 	dev_dbg(DBG_LEVEL_LAPICPT, "%s: msi_addr 0x%016lx, msi_data 0x%016lx",
-		__func__, vmsi->msi_addr, vmsi->msi_data);
+		__func__, addr, data);
 
 	if (vmsi_addr.bits.addr_base == MSI_ADDR_BASE) {
 		vdest = vmsi_addr.bits.dest_field;
@@ -1980,6 +1979,49 @@ void inject_msi_lapic_pt(struct acrn_vm *vm, const struct acrn_msi_entry *vmsi)
 	}
 }
 
+/**
+ * @brief Inject MSI to target VM for both virtual local APIC and local APIC pass-through cases.
+ *
+ * @param[in] vm   Pointer to VM data structure.
+ * @param[in] addr MSI address.
+ * @param[in] data  MSI data.
+ *
+ * @retval 0 on success.
+ * @retval -1 on error that addr is invalid.
+ *
+ * @pre vm != NULL
+ */
+int32_t vlapic_inject_msi(struct acrn_vm *vm, uint64_t addr, uint64_t data)
+{
+	int32_t ret = -1;
+
+	/* For target cpu with lapic pt, send ipi instead of injection via vlapic */
+	if (is_lapic_pt_configured(vm)) {
+		enum vm_vlapic_mode vlapic_mode = check_vm_vlapic_mode(vm);
+
+		if (vlapic_mode == VM_VLAPIC_X2APIC) {
+			/*
+			 * All the vCPUs of VM are in x2APIC mode and LAPIC is PT
+			 * Inject the vMSI as an IPI directly to VM
+			 */
+			inject_msi_for_lapic_pt(vm, addr, data);
+			ret = 0;
+		} else if (vlapic_mode == VM_VLAPIC_XAPIC) {
+			/*
+			 * All the vCPUs of VM are in xAPIC and use vLAPIC
+			 * Inject using vLAPIC
+			 */
+			ret = inject_msi_for_non_lapic_pt(vm, addr, data);
+		} else {
+			/* Returns error for VM_VLAPIC_DISABLED and VM_VLAPIC_TRANSITION cases*/
+		}
+	} else {
+		ret = inject_msi_for_non_lapic_pt(vm, addr, data);
+	}
+
+	return ret;
+}
+
 /* interrupt context */
 static void vlapic_timer_expired(void *data)
 {
diff --git a/hypervisor/common/hypercall.c b/hypervisor/common/hypercall.c
index d6de4db63..5be2ef10e 100644
--- a/hypervisor/common/hypercall.c
+++ b/hypervisor/common/hypercall.c
@@ -438,32 +438,7 @@ int32_t hcall_inject_msi(struct acrn_vm *vm, struct acrn_vm *target_vm, __unused
 		struct acrn_msi_entry msi;
 
 		if (copy_from_gpa(vm, &msi, param2, sizeof(msi)) == 0) {
-			/* For target cpu with lapic pt, send ipi instead of injection via vlapic */
-			if (is_lapic_pt_configured(target_vm)) {
-				enum vm_vlapic_mode vlapic_mode = check_vm_vlapic_mode(target_vm);
-
-				if (vlapic_mode == VM_VLAPIC_X2APIC) {
-					/*
-					 * All the vCPUs of VM are in x2APIC mode and LAPIC is PT
-					 * Inject the vMSI as an IPI directly to VM
-					 */
-					inject_msi_lapic_pt(target_vm, &msi);
-					ret = 0;
-				} else if (vlapic_mode == VM_VLAPIC_XAPIC) {
-					/*
-					 * All the vCPUs of VM are in xAPIC and use vLAPIC
-					 * Inject using vLAPIC
-					 */
-					ret = vlapic_intr_msi(target_vm, msi.msi_addr, msi.msi_data);
-				} else {
-					/*
-					 * For cases VM_VLAPIC_DISABLED and VM_VLAPIC_TRANSITION
-					 * Silently drop interrupt
-					 */
-				}
-			} else {
-				ret = vlapic_intr_msi(target_vm, msi.msi_addr, msi.msi_data);
-			}
+			ret = vlapic_inject_msi(target_vm, msi.msi_addr, msi.msi_data);
 		}
 	}
 
diff --git a/hypervisor/include/arch/x86/guest/vlapic.h b/hypervisor/include/arch/x86/guest/vlapic.h
index cebda498d..1ec99e320 100644
--- a/hypervisor/include/arch/x86/guest/vlapic.h
+++ b/hypervisor/include/arch/x86/guest/vlapic.h
@@ -152,15 +152,15 @@ int32_t vlapic_set_local_intr(struct acrn_vm *vm, uint16_t vcpu_id_arg, uint32_t
  *
  * @param[in] vm   Pointer to VM data structure
  * @param[in] addr MSI address.
- * @param[in] msg  MSI data.
+ * @param[in] data MSI data.
  *
  * @retval 0 on success.
  * @retval -1 on error that addr is invalid.
  *
  * @pre vm != NULL
  */
-int32_t vlapic_intr_msi(struct acrn_vm *vm, uint64_t addr, uint64_t msg);
-void inject_msi_lapic_pt(struct acrn_vm *vm, const struct acrn_msi_entry *vmsi);
+int32_t vlapic_inject_msi(struct acrn_vm *vm, uint64_t addr, uint64_t data);
+
 
 void vlapic_receive_intr(struct acrn_vm *vm, bool level, uint32_t dest,
 		bool phys, uint32_t delmode, uint32_t vec, bool rh);