diff --git a/misc/vm_configs/xmls/config-xmls/generic/hybrid.xml b/misc/vm_configs/xmls/config-xmls/generic/hybrid.xml
index e0e19f1c2..2f7606a4c 100644
--- a/misc/vm_configs/xmls/config-xmls/generic/hybrid.xml
+++ b/misc/vm_configs/xmls/config-xmls/generic/hybrid.xml
@@ -88,18 +88,18 @@
         <kern_load_addr desc="The loading address in host memory for the VM kernel">0x8000</kern_load_addr>
         <kern_entry_addr desc="The entry address in host memory for the VM kernel">0x8000</kern_entry_addr>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM2_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">1</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
     </pci_devs>
@@ -132,18 +132,18 @@
         <ramdisk_mod desc="The tag for ramdisk image which act as multiboot module, it must exactly match the module tag in GRUB multiboot cmdline."></ramdisk_mod>
         <bootargs configurable="0" desc="Specify kernel boot arguments">SOS_VM_BOOTARGS</bootargs>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address." readonly="true">SOS_COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">SOS_COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">SOS_COM2_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">SOS_COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs configurable="0" desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
     </pci_devs>
@@ -170,17 +170,17 @@
         <base desc="SGX EPC section base, must be page aligned">0</base>
         <size desc="SGX EPC section size in Bytes, must be page aligned">0</size>
     </epc_section>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">0</target_uart_id>
-    </vuart>
+    </legacy_vuart>
   </vm>
 </acrn-config>
diff --git a/misc/vm_configs/xmls/config-xmls/generic/hybrid_rt.xml b/misc/vm_configs/xmls/config-xmls/generic/hybrid_rt.xml
index d83fffa50..eef750792 100644
--- a/misc/vm_configs/xmls/config-xmls/generic/hybrid_rt.xml
+++ b/misc/vm_configs/xmls/config-xmls/generic/hybrid_rt.xml
@@ -90,18 +90,18 @@
         <ramdisk_mod desc="The tag for ramdisk image which act as multiboot module, it must exactly match the module tag in GRUB multiboot cmdline."></ramdisk_mod>
         <bootargs desc="Specify kernel boot arguments"></bootargs>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM2_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">1</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
     </pci_devs>
@@ -133,18 +133,18 @@
         <ramdisk_mod desc="The tag for ramdisk image which act as multiboot module, it must exactly match the module tag in GRUB multiboot cmdline."></ramdisk_mod>
         <bootargs configurable="0" desc="Specify kernel boot arguments">SOS_VM_BOOTARGS</bootargs>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address." readonly="true">SOS_COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">SOS_COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">SOS_COM2_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">SOS_COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs configurable="0" desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
     </pci_devs>
@@ -171,18 +171,18 @@
         <base desc="SGX EPC section base, must be page aligned">0</base>
         <size desc="SGX EPC section size in Bytes, must be page aligned">0</size>
     </epc_section>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">0</target_uart_id>
-    </vuart>
+    </legacy_vuart>
   </vm>
   <vm id="3">
     <vm_type desc="Specify the VM type" readonly="true">POST_STD_VM</vm_type>
@@ -199,17 +199,17 @@
         <base desc="SGX EPC section base, must be page aligned">0</base>
         <size desc="SGX EPC section size in Bytes, must be page aligned">0</size>
     </epc_section>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">0</target_uart_id>
-    </vuart>
+    </legacy_vuart>
   </vm>
 </acrn-config>
diff --git a/misc/vm_configs/xmls/config-xmls/generic/industry.xml b/misc/vm_configs/xmls/config-xmls/generic/industry.xml
index d5bcb7602..d1275602f 100644
--- a/misc/vm_configs/xmls/config-xmls/generic/industry.xml
+++ b/misc/vm_configs/xmls/config-xmls/generic/industry.xml
@@ -77,18 +77,18 @@
         <ramdisk_mod desc="The tag for ramdisk image which act as multiboot module, it must exactly match the module tag in GRUB multiboot cmdline."></ramdisk_mod>
         <bootargs configurable="0" desc="Specify kernel boot arguments">SOS_VM_BOOTARGS</bootargs>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address." readonly="true">SOS_COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">SOS_COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">SOS_COM2_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">SOS_COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">2</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs configurable="0" desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
     </pci_devs>
@@ -115,18 +115,18 @@
         <base desc="SGX EPC section base, must be page aligned">0</base>
         <size desc="SGX EPC section size in Bytes, must be page aligned">0</size>
     </epc_section>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
   </vm>
   <vm id="2">
     <vm_type desc="Specify the VM type" readonly="true">POST_RT_VM</vm_type>
@@ -145,17 +145,17 @@
         <base desc="SGX EPC section base, must be page aligned">0</base>
         <size desc="SGX EPC section size in Bytes, must be page aligned">0</size>
     </epc_section>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM2_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
   </vm>
 </acrn-config>
diff --git a/misc/vm_configs/xmls/config-xmls/generic/logical_partition.xml b/misc/vm_configs/xmls/config-xmls/generic/logical_partition.xml
index ad900b221..85912d0d5 100644
--- a/misc/vm_configs/xmls/config-xmls/generic/logical_partition.xml
+++ b/misc/vm_configs/xmls/config-xmls/generic/logical_partition.xml
@@ -91,18 +91,18 @@
         rw rootwait root=/dev/sda3 console=ttyS0 noxsave nohpet no_timer_check ignore_loglevel log_buf_len=16M consoleblank=0 tsc=reliable
         </bootargs>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address." readonly="true">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM2_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">1</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
         <pci_dev desc="pci device"></pci_dev>
@@ -145,18 +145,18 @@
         consoleblank=0 tsc=reliable
         </bootargs>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address." readonly="true">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM2_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
         <pci_dev desc="pci device"></pci_dev>
diff --git a/misc/vm_configs/xmls/config-xmls/generic/sdc.xml b/misc/vm_configs/xmls/config-xmls/generic/sdc.xml
index f522f1eff..2c699a867 100644
--- a/misc/vm_configs/xmls/config-xmls/generic/sdc.xml
+++ b/misc/vm_configs/xmls/config-xmls/generic/sdc.xml
@@ -77,18 +77,18 @@
         <ramdisk_mod desc="The tag for ramdisk image which act as multiboot module, it must exactly match the module tag in GRUB multiboot cmdline."></ramdisk_mod>
         <bootargs configurable="0" desc="Specify kernel boot arguments">SOS_VM_BOOTARGS</bootargs>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address." readonly="true">SOS_COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">SOS_COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">SOS_COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">1</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs configurable="0" desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
     </pci_devs>
@@ -115,18 +115,18 @@
         <base desc="SGX EPC section base, must be page aligned">0</base>
         <size desc="SGX EPC section size in Bytes, must be page aligned">0</size>
     </epc_section>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
   </vm>
   <vm id="2" configurable="1" desc="specific for Kata">
     <vm_type readonly="true" desc="Specify the VM type">KATA_VM</vm_type>
@@ -140,17 +140,17 @@
         <base desc="SGX EPC section base, must be page aligned">0</base>
         <size desc="SGX EPC section size in Bytes, must be page aligned">0</size>
     </epc_section>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base configurable="0" desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base configurable="0" desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">0</target_uart_id>
-    </vuart>
+    </legacy_vuart>
   </vm>
 </acrn-config>
diff --git a/misc/vm_configs/xmls/config-xmls/template/KATA_VM.xml b/misc/vm_configs/xmls/config-xmls/template/KATA_VM.xml
index 310e0c421..8f5ffbac8 100644
--- a/misc/vm_configs/xmls/config-xmls/template/KATA_VM.xml
+++ b/misc/vm_configs/xmls/config-xmls/template/KATA_VM.xml
@@ -11,17 +11,17 @@
         <base desc="SGX EPC section base, must be page aligned">0</base>
         <size desc="SGX EPC section size in Bytes, must be page aligned">0</size>
     </epc_section>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base configurable="0" desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
   </vm>
 </acrn-config>
diff --git a/misc/vm_configs/xmls/config-xmls/template/POST_RT_VM.xml b/misc/vm_configs/xmls/config-xmls/template/POST_RT_VM.xml
index f2124c63e..6fd44a73f 100644
--- a/misc/vm_configs/xmls/config-xmls/template/POST_RT_VM.xml
+++ b/misc/vm_configs/xmls/config-xmls/template/POST_RT_VM.xml
@@ -14,17 +14,17 @@
         <base desc="SGX EPC section base, must be page aligned">0</base>
         <size desc="SGX EPC section size in Bytes, must be page aligned">0</size>
     </epc_section>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
   </vm>
 </acrn-config>
diff --git a/misc/vm_configs/xmls/config-xmls/template/POST_STD_VM.xml b/misc/vm_configs/xmls/config-xmls/template/POST_STD_VM.xml
index e573cb587..d8d8c5998 100644
--- a/misc/vm_configs/xmls/config-xmls/template/POST_STD_VM.xml
+++ b/misc/vm_configs/xmls/config-xmls/template/POST_STD_VM.xml
@@ -14,17 +14,17 @@
         <base desc="SGX EPC section base, must be page aligned">0</base>
         <size desc="SGX EPC section size in Bytes, must be page aligned">0</size>
     </epc_section>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
   </vm>
 </acrn-config>
diff --git a/misc/vm_configs/xmls/config-xmls/template/PRE_RT_VM.xml b/misc/vm_configs/xmls/config-xmls/template/PRE_RT_VM.xml
index f19063fe4..7cf7bf97c 100644
--- a/misc/vm_configs/xmls/config-xmls/template/PRE_RT_VM.xml
+++ b/misc/vm_configs/xmls/config-xmls/template/PRE_RT_VM.xml
@@ -29,18 +29,18 @@
         <ramdisk_mod desc="The tag for ramdisk image which act as multiboot module, it must exactly match the module tag in GRUB multiboot cmdline."></ramdisk_mod>
         <bootargs desc="Specify kernel boot arguments"></bootargs>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs configurable="0" desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
     </pci_devs>
diff --git a/misc/vm_configs/xmls/config-xmls/template/PRE_STD_VM.xml b/misc/vm_configs/xmls/config-xmls/template/PRE_STD_VM.xml
index 856d85599..a326096a6 100644
--- a/misc/vm_configs/xmls/config-xmls/template/PRE_STD_VM.xml
+++ b/misc/vm_configs/xmls/config-xmls/template/PRE_STD_VM.xml
@@ -28,18 +28,18 @@
         <ramdisk_mod desc="The tag for ramdisk image which act as multiboot module, it must exactly match the module tag in GRUB multiboot cmdline."></ramdisk_mod>
         <bootargs desc="Specify kernel boot arguments"></bootargs>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address." readonly="true">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
         <pci_dev desc="pci device"></pci_dev>
diff --git a/misc/vm_configs/xmls/config-xmls/template/SAFETY_VM.xml b/misc/vm_configs/xmls/config-xmls/template/SAFETY_VM.xml
index 3709cf14e..24f335cfd 100644
--- a/misc/vm_configs/xmls/config-xmls/template/SAFETY_VM.xml
+++ b/misc/vm_configs/xmls/config-xmls/template/SAFETY_VM.xml
@@ -30,18 +30,18 @@
         <kern_load_addr desc="The loading address in host memory for the VM kernel"></kern_load_addr>
         <kern_entry_addr desc="The entry address in host memory for the VM kernel"></kern_entry_addr>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">0</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs configurable="0" desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
     </pci_devs>
diff --git a/misc/vm_configs/xmls/config-xmls/template/SOS_VM.xml b/misc/vm_configs/xmls/config-xmls/template/SOS_VM.xml
index 625daef2e..a8546e00a 100644
--- a/misc/vm_configs/xmls/config-xmls/template/SOS_VM.xml
+++ b/misc/vm_configs/xmls/config-xmls/template/SOS_VM.xml
@@ -22,18 +22,18 @@
         <ramdisk_mod desc="The tag for ramdisk image which act as multiboot module, it must exactly match the module tag in GRUB multiboot cmdline."></ramdisk_mod>
         <bootargs configurable="0" desc="Specify kernel boot arguments">SOS_VM_BOOTARGS</bootargs>
     </os_config>
-    <vuart id="0">
+    <legacy_vuart id="0">
         <type configurable="0" desc="vCOM1 type">VUART_LEGACY_PIO</type>
         <base desc="vUART0 (A.K.A COM1) enabling switch. Enable by exposing its base address, disable by returning invalid base address." readonly="true">SOS_COM1_BASE</base>
         <irq configurable="0" desc="vCOM1 irq">SOS_COM1_IRQ</irq>
-    </vuart>
-    <vuart id="1">
+    </legacy_vuart>
+    <legacy_vuart id="1">
         <type configurable="0" desc="vCOM2 type">VUART_LEGACY_PIO</type>
         <base desc="vUART1 (A.K.A COM2) enabling switch. Enable by exposing its base address, disable by returning invalid base address.">INVALID_COM_BASE</base>
         <irq configurable="0" desc="vCOM2 irq">SOS_COM2_IRQ</irq>
         <target_vm_id desc="COM2 is used for VM communications. When it is enabled, please specify which target VM that current VM connect to.">2</target_vm_id>
         <target_uart_id configurable="0" desc="target vUART ID that vCOM2 connect to">1</target_uart_id>
-    </vuart>
+    </legacy_vuart>
     <pci_devs configurable="0" desc="pci devices list">
         <pci_dev desc="pci device"></pci_dev>
     </pci_devs>