[PATCH 09/21] hw: Let memory_region_allocate_system_memory take MachineState argument

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

All the codebase calls memory_region_allocate_system_memory() with
a NULL 'owner' from the board_init() function.
Let pass a MachineState argument, and enforce the QOM ownership of
the system memory.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/core/numa.c      | 11 +++++++----
 include/hw/boards.h |  6 ++++--
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/hw/core/numa.c b/hw/core/numa.c
index 038c96d4ab..2e29e4bfe0 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -520,21 +520,24 @@ static void allocate_system_memory_nonnuma(MemoryRegion *mr, Object *owner,
     vmstate_register_ram_global(mr);
 }
 
-void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
+void memory_region_allocate_system_memory(MemoryRegion *mr, MachineState *ms,
                                           const char *name,
                                           uint64_t ram_size)
 {
     uint64_t addr = 0;
     int i;
-    MachineState *ms = MACHINE(qdev_get_machine());
+
+    if (!ms) {
+        ms = MACHINE(qdev_get_machine());
+    }
 
     if (ms->numa_state == NULL ||
         ms->numa_state->num_nodes == 0 || !have_memdevs) {
-        allocate_system_memory_nonnuma(mr, owner, name, ram_size);
+        allocate_system_memory_nonnuma(mr, OBJECT(ms), name, ram_size);
         return;
     }
 
-    memory_region_init(mr, owner, name, ram_size);
+    memory_region_init(mr, OBJECT(ms), name, ram_size);
     for (i = 0; i < ms->numa_state->num_nodes; i++) {
         uint64_t size = ms->numa_state->nodes[i].node_mem;
         HostMemoryBackend *backend = ms->numa_state->nodes[i].node_memdev;
diff --git a/include/hw/boards.h b/include/hw/boards.h
index de45087f34..3b6cb82b6c 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -14,7 +14,7 @@
 /**
  * memory_region_allocate_system_memory - Allocate a board's main memory
  * @mr: the #MemoryRegion to be initialized
- * @owner: the object that tracks the region's reference count
+ * @ms: the #MachineState object that own the system memory
  * @name: name of the memory region
  * @ram_size: size of the region in bytes
  *
@@ -38,8 +38,10 @@
  * Smaller pieces of memory (display RAM, static RAMs, etc) don't need
  * to be backed via the -mem-path memory backend and can simply
  * be created via memory_region_init_ram().
+ *
+ * The #MachineState object will track the region's reference count.
  */
-void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
+void memory_region_allocate_system_memory(MemoryRegion *mr, MachineState *ms,
                                           const char *name,
                                           uint64_t ram_size);
 
-- 
2.21.0