[Qemu-devel] [PATCH v4 3/7] pc: reserve hotpluggable memory range with memory_region_init_hva_range()

[Igor Mammedov <imammedo@redhat.com>]

It makes sure that all hotplugged memory will be put in
continuos HVA range allowing to use 1:1 GVA<->HVA mapping.

1:1 mapping will be used by vhost to reduce number of memory
ranges for hotplugged memory to a single range that covers
all hotpluggable memory address space.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/i386/pc.c     | 4 ++--
 hw/mem/pc-dimm.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 7661ea9..75f73ec 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1373,8 +1373,8 @@ FWCfgState *pc_memory_init(MachineState *machine,
             exit(EXIT_FAILURE);
         }
 
-        memory_region_init(&pcms->hotplug_memory.mr, OBJECT(pcms),
-                           "hotplug-memory", hotplug_mem_size);
+        memory_region_init_hva_range(&pcms->hotplug_memory.mr, OBJECT(pcms),
+                                     "hotplug-memory", hotplug_mem_size);
         memory_region_add_subregion(system_memory, pcms->hotplug_memory.base,
                                     &pcms->hotplug_memory.mr);
     }
diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c
index bb04862..cb98926 100644
--- a/hw/mem/pc-dimm.c
+++ b/hw/mem/pc-dimm.c
@@ -95,7 +95,7 @@ void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms,
         goto out;
     }
 
-    memory_region_add_subregion(&hpms->mr, addr - hpms->base, mr);
+    memory_region_add_subregion_to_hva(&hpms->mr, addr - hpms->base, mr);
     vmstate_register_ram(mr, dev);
     numa_set_mem_node_id(addr, memory_region_size(mr), dimm->node);
 
-- 
1.8.3.1