sysbus: add sysbus_address_space()

Given a bus device, retrieves the memory address space for its bus.

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/hw/sysbus.c b/hw/sysbus.c
index 81a57bdba8..7016903163 100644
--- a/hw/sysbus.c
+++ b/hw/sysbus.c
@@ -261,3 +261,8 @@ void sysbus_del_io(SysBusDevice *dev, MemoryRegion *mem)
 {
     memory_region_del_subregion(get_system_io(), mem);
 }
+
+MemoryRegion *sysbus_address_space(SysBusDevice *dev)
+{
+    return get_system_memory();
+}