[Qemu-devel] [PATCH v3 1/1] memory: add name in AddressSpace initialization.

[Alexander Barabash]

Pass the AddressSpace's name (to be used for debugging)
to address_space_init(). If NULL is passed, the name
of root memory region is used instead.

Signed-off-by: Alexander Barabash <address@hidden>
---
 exec.c                |    6 ++----
 hw/pci/pci.c          |    3 ++-
 include/exec/memory.h |    5 +++--
 memory.c              |    5 +++--
 4 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/exec.c b/exec.c
index a6923ad..b22abcc 100644
--- a/exec.c
+++ b/exec.c
@@ -1784,13 +1784,11 @@ static void memory_map_init(void)
 {
     system_memory = g_malloc(sizeof(*system_memory));
     memory_region_init(system_memory, "system", INT64_MAX);
-    address_space_init(&address_space_memory, system_memory);
-    address_space_memory.name = "memory";
+    address_space_init(&address_space_memory, system_memory, "memory");
 
     system_io = g_malloc(sizeof(*system_io));
     memory_region_init(system_io, "io", 65536);
-    address_space_init(&address_space_io, system_io);
-    address_space_io.name = "I/O";
+    address_space_init(&address_space_io, system_io, "IO");
 
     memory_listener_register(&core_memory_listener, &address_space_memory);
     memory_listener_register(&io_memory_listener, &address_space_io);
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 94840c4..6cc3abe 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -790,7 +790,8 @@ static PCIDevice *do_pci_register_device(PCIDevice 
*pci_dev, PCIBus *bus,
                                  get_system_memory(), 0,
                                  memory_region_size(get_system_memory()));
         memory_region_set_enabled(&pci_dev->bus_master_enable_region, false);
-        address_space_init(&pci_dev->bus_master_as, 
&pci_dev->bus_master_enable_region);
+        address_space_init(&pci_dev->bus_master_as,
+                           &pci_dev->bus_master_enable_region, NULL);
         pci_dev->dma = g_new(DMAContext, 1);
         dma_context_init(pci_dev->dma, &pci_dev->bus_master_as, NULL, NULL, 
NULL);
     }
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 2322732..cb79a65 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -817,9 +817,10 @@ void mtree_info(fprintf_function mon_printf, void *f);
  *
  * @as: an uninitialized #AddressSpace
  * @root: a #MemoryRegion that routes addesses for the address space
+ * @name: used for debugging. If NULL, name of the root memory region is used.
  */
-void address_space_init(AddressSpace *as, MemoryRegion *root);
-
+void address_space_init(AddressSpace *as, MemoryRegion *root,
+                         const char *name);
 
 /**
  * address_space_destroy: destroy an address space
diff --git a/memory.c b/memory.c
index 410c5f8..ab3b136 100644
--- a/memory.c
+++ b/memory.c
@@ -1562,14 +1562,14 @@ void memory_listener_unregister(MemoryListener 
*listener)
     QTAILQ_REMOVE(&memory_listeners, listener, link);
 }
 
-void address_space_init(AddressSpace *as, MemoryRegion *root)
+void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)
 {
     memory_region_transaction_begin();
     as->root = root;
     as->current_map = g_new(FlatView, 1);
     flatview_init(as->current_map);
     QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link);
-    as->name = NULL;
+    as->name = g_strdup(name ? name : root->name);
     memory_region_transaction_commit();
     address_space_init_dispatch(as);
 }
@@ -1584,6 +1584,7 @@ void address_space_destroy(AddressSpace *as)
     address_space_destroy_dispatch(as);
     flatview_destroy(as->current_map);
     g_free(as->current_map);
+    g_free((char *)as->name);
 }
 
 uint64_t io_mem_read(MemoryRegion *mr, hwaddr addr, unsigned size)
-- 
1.7.9.5