1 files changed, 16 insertions, 0 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index e1a9fd7ff3..7a1b8c6f45 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1759,11 +1759,22 @@ static const TypeInfo spapr_machine_info = {
     },
 };
 
+#define SPAPR_COMPAT_2_2 \
+        {\
+            .driver   = TYPE_SPAPR_PCI_HOST_BRIDGE,\
+            .property = "mem_win_size",\
+            .value    = "0x20000000",\
+        }
+
+#define SPAPR_COMPAT_2_1 \
+        SPAPR_COMPAT_2_2
+
 static void spapr_machine_2_1_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
     static GlobalProperty compat_props[] = {
         HW_COMPAT_2_1,
+        SPAPR_COMPAT_2_1,
         { /* end of list */ }
     };
 
@@ -1780,10 +1791,15 @@ static const TypeInfo spapr_machine_2_1_info = {
 
 static void spapr_machine_2_2_class_init(ObjectClass *oc, void *data)
 {
+    static GlobalProperty compat_props[] = {
+        SPAPR_COMPAT_2_2,
+        { /* end of list */ }
+    };
     MachineClass *mc = MACHINE_CLASS(oc);
 
     mc->name = "pseries-2.2";
     mc->desc = "pSeries Logical Partition (PAPR compliant) v2.2";
+    mc->compat_props = compat_props;
 }
 
 static const TypeInfo spapr_machine_2_2_info = {