[01/15] pc-dimm: get memory region from ->get_memory_region()

Commit Message

Xiao Guangrong March 17, 2016, 8:32 a.m. UTC

Curretly, the memory region of backed memory is all directly
mapped to guest's address space, however, it will be not true
for nvdimm device if we introduce nvdimm label which only can
be indirectly accessed by ACPI DSM method

Also it improves the comments a bit to reflect this fact

Signed-off-by: Xiao Guangrong <[e-mail]>
---
 hw/mem/pc-dimm.c         | 3 ++-
 include/hw/mem/pc-dimm.h | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

Patch

diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c
index 973bf20..0ba17f0 100644
--- a/hw/mem/pc-dimm.c
+++ b/hw/mem/pc-dimm.c
@@ -353,8 +353,9 @@  static void pc_dimm_get_size(Object *obj, Visitor *v, const char *name,
     int64_t value;
     MemoryRegion *mr;
     PCDIMMDevice *dimm = PC_DIMM(obj);
+    PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(obj);
 
-    mr = host_memory_backend_get_memory(dimm->hostmem, errp);
+    mr = ddc->get_memory_region(dimm);
     value = memory_region_size(mr);
 
     visit_type_int(v, name, &value, errp);
diff --git a/include/hw/mem/pc-dimm.h b/include/hw/mem/pc-dimm.h
index 218dfb0..827f1bc 100644
--- a/include/hw/mem/pc-dimm.h
+++ b/include/hw/mem/pc-dimm.h
@@ -60,7 +60,8 @@  typedef struct PCDIMMDevice {
 
 /**
  * PCDIMMDeviceClass:
- * @get_memory_region: returns #MemoryRegion associated with @dimm
+ * @get_memory_region: returns #MemoryRegion associated with @dimm which
+ * is directly mapped into the physical address space of guest
  */
 typedef struct PCDIMMDeviceClass {
     /* private */