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-rw-r--r--include/hw/boards.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 236d239c19..fd4d62b501 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -152,6 +152,12 @@ typedef struct {
  *    It also will be used as a way to optin into "-m" option support.
  *    If it's not set by board, '-m' will be ignored and generic code will
  *    not create default RAM MemoryRegion.
+ * @fixup_ram_size:
+ *    Amends user provided ram size (with -m option) using machine
+ *    specific algorithm. To be used by old machine types for compat
+ *    purposes only.
+ *    Applies only to default memory backend, i.e., explicit memory backend
+ *    wasn't used.
  */
 struct MachineClass {
     /*< private >*/
@@ -218,6 +224,7 @@ struct MachineClass {
                                                          unsigned cpu_index);
     const CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine);
     int64_t (*get_default_cpu_node_id)(const MachineState *ms, int idx);
+    ram_addr_t (*fixup_ram_size)(ram_addr_t size);
 };
 
 /**