diff --git a/misc/config_tools/schema/checks/vm_memory.xsd b/misc/config_tools/schema/checks/vm_memory.xsd
new file mode 100644
index 000000000..1e5827035
--- /dev/null
+++ b/misc/config_tools/schema/checks/vm_memory.xsd
@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2022 Intel Corporation. -->
+<!-- SPDX-License-Identifier: BSD-3-Clause -->
+<xs:schema xml:id="root"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           xmlns:acrn="https://projectacrn.org">
+
+  <xs:assert test="sum(//memory/range[not(@id)]/@size) &gt; (sum(/acrn-config//vm[load_order != 'SERVICE_VM']//memory/size) + sum(/acrn-config//vm[load_order != 'SERVICE_VM']//size_hpa)) * 1024 * 1024">
+    <xs:annotation acrn:severity="warning" acrn:report-on="/acrn-config//vm[load_order != 'SERVICE_VM']//memory">
+      <xs:documentation>The total memory size applied by all VMs large then the host memory ({(sum(/acrn-config//vm[load_order != 'SERVICE_VM']//memory/size) + sum(/acrn-config//vm[load_order != 'SERVICE_VM']//size_hpa)) * 1024 * 1024} > {sum(//memory/range[not(@id)]/@size)}).</xs:documentation>
+    </xs:annotation>
+  </xs:assert>
+
+</xs:schema>
diff --git a/misc/config_tools/schema/datachecks.xsd b/misc/config_tools/schema/datachecks.xsd
index a38944a0a..fa1697203 100644
--- a/misc/config_tools/schema/datachecks.xsd
+++ b/misc/config_tools/schema/datachecks.xsd
@@ -19,6 +19,7 @@
       <xi:include href="checks/ivsh_memory.xsd" xpointer="xpointer(id('root')/*)" />
       <xi:include href="checks/rdt_support.xsd" xpointer="xpointer(id('root')/*)" />
       <xi:include href="checks/pci_config.xsd" xpointer="xpointer(id('root')/*)" />
+      <xi:include href="checks/vm_memory.xsd" xpointer="xpointer(id('root')/*)" />
 
     </xs:complexType>
   </xs:element>