diff --git a/OvmfPkg/Library/PlatformInitLib/MemDetect.c b/OvmfPkg/Library/PlatformInitLib/MemDetect.c
index 76a9dc9211..f042517bb6 100644
--- a/OvmfPkg/Library/PlatformInitLib/MemDetect.c
+++ b/OvmfPkg/Library/PlatformInitLib/MemDetect.c
@@ -873,6 +873,18 @@ PlatformAddressWidthInitialization (
 
   if (PlatformInfoHob->HostBridgeDevId == 0xffff /* microvm */) {
     PlatformAddressWidthFromCpuid (PlatformInfoHob, FALSE);
+    return;
+  } else if (PlatformInfoHob->HostBridgeDevId == CLOUDHV_DEVICE_ID) {
+    PlatformInfoHob->FirstNonAddress = BASE_4GB;
+    Status                           = PlatformScanE820 (PlatformGetFirstNonAddressCB, PlatformInfoHob);
+    if (EFI_ERROR (Status)) {
+      PlatformInfoHob->FirstNonAddress = BASE_4GB + PlatformGetSystemMemorySizeAbove4gb ();
+    }
+
+    PlatformInfoHob->PcdPciMmio64Base = PlatformInfoHob->FirstNonAddress;
+    PlatformAddressWidthFromCpuid (PlatformInfoHob, FALSE);
+    PlatformInfoHob->PcdPciMmio64Size = PlatformInfoHob->FirstNonAddress - PlatformInfoHob->PcdPciMmio64Base;
+
     return;
   }