diff --git a/docs/formatdomaincaps.html.in b/docs/formatdomaincaps.html.in
index 62f1940e6a..10d23f4c0b 100644
--- a/docs/formatdomaincaps.html.in
+++ b/docs/formatdomaincaps.html.in
@@ -290,6 +290,34 @@
 <domainCapabilities>
 </pre>
 
+    <h3><a id="elementsMemoryBacking">Memory Backing</a></h3>
+
+    <p>
+      The <code>memory backing</code> element indicates whether or not
+      <a href="formatdomain.html#memory-backing">memory backing</a>
+      is supported.
+    </p>
+
+<pre>
+&lt;domainCapabilities&gt;
+  ...
+  &lt;memoryBacking supported='yes'&gt;
+    &lt;enum name='sourceType'&gt;
+      &lt;value&gt;anonymous&lt;/value&gt;
+      &lt;value&gt;file&lt;/value&gt;
+      &lt;value&gt;memfd&lt;/value&gt;
+    &lt;/enum&gt;
+  &lt;/memoryBacking&gt;
+  ...
+&lt;domainCapabilities&gt;
+</pre>
+
+    <dl>
+      <dt><code>sourceType</code></dt>
+      <dd>Options for the <code>type</code> attribute of the
+      &lt;memoryBacking&gt;&lt;source&gt; element.</dd>
+    </dl>
+
     <h3><a id="elementsDevices">Devices</a></h3>
 
     <p>
diff --git a/docs/schemas/domaincaps.rng b/docs/schemas/domaincaps.rng
index fc668e0c78..69d7824e7c 100644
--- a/docs/schemas/domaincaps.rng
+++ b/docs/schemas/domaincaps.rng
@@ -37,6 +37,9 @@
         <optional>
           <ref name="cpu"/>
         </optional>
+        <optional>
+          <ref name="memoryBacking"/>
+        </optional>
         <optional>
           <ref name="devices"/>
         </optional>
@@ -165,6 +168,13 @@
     </element>
   </define>
 
+  <define name="memoryBacking">
+    <element name="memoryBacking">
+      <ref name="supported"/>
+      <ref name="enum"/>
+    </element>
+  </define>
+
   <define name="devices">
     <element name="devices">
       <optional>
diff --git a/src/conf/domain_capabilities.c b/src/conf/domain_capabilities.c
index cb90ae0176..73139d0ec6 100644
--- a/src/conf/domain_capabilities.c
+++ b/src/conf/domain_capabilities.c
@@ -457,6 +457,18 @@ virDomainCapsCPUFormat(virBuffer *buf,
     virBufferAddLit(buf, "</cpu>\n");
 }
 
+static void
+virDomainCapsMemoryBackingFormat(virBuffer *buf,
+                                 const virDomainCapsMemoryBacking *memoryBacking)
+{
+    FORMAT_PROLOGUE(memoryBacking);
+
+    ENUM_PROCESS(memoryBacking, sourceType, virDomainMemorySourceTypeToString);
+
+    FORMAT_EPILOGUE(memoryBacking);
+}
+
+
 static void
 virDomainCapsDeviceDiskFormat(virBuffer *buf,
                               const virDomainCapsDeviceDisk *disk)
@@ -632,6 +644,8 @@ virDomainCapsFormat(const virDomainCaps *caps)
     virDomainCapsOSFormat(&buf, &caps->os);
     virDomainCapsCPUFormat(&buf, &caps->cpu);
 
+    virDomainCapsMemoryBackingFormat(&buf, &caps->memoryBacking);
+
     virBufferAddLit(&buf, "<devices>\n");
     virBufferAdjustIndent(&buf, 2);
 
diff --git a/src/conf/domain_capabilities.h b/src/conf/domain_capabilities.h
index b6433b20c9..a3765832c1 100644
--- a/src/conf/domain_capabilities.h
+++ b/src/conf/domain_capabilities.h
@@ -62,6 +62,13 @@ struct _virDomainCapsOS {
     virDomainCapsLoader loader;     /* Info about virDomainLoaderDef */
 };
 
+STATIC_ASSERT_ENUM(VIR_DOMAIN_MEMORY_SOURCE_LAST);
+typedef struct _virDomainCapsMemoryBacking virDomainCapsMemoryBacking;
+struct _virDomainCapsMemoryBacking {
+    virTristateBool supported;
+    virDomainCapsEnum sourceType; /* virDomainMemorySource */
+};
+
 STATIC_ASSERT_ENUM(VIR_DOMAIN_DISK_DEVICE_LAST);
 STATIC_ASSERT_ENUM(VIR_DOMAIN_DISK_BUS_LAST);
 STATIC_ASSERT_ENUM(VIR_DOMAIN_DISK_MODEL_LAST);
@@ -196,6 +203,7 @@ struct _virDomainCaps {
 
     virDomainCapsOS os;
     virDomainCapsCPU cpu;
+    virDomainCapsMemoryBacking memoryBacking;
     virDomainCapsDeviceDisk disk;
     virDomainCapsDeviceGraphics graphics;
     virDomainCapsDeviceVideo video;