Include sysemu/hostmem.h less

Move the HostMemoryBackend typedef from sysemu/hostmem.h to
qemu/typedefs.h.  This renders a few inclusions of sysemu/hostmem.h
superfluous; drop them.

Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190812052359.30071-25-armbru@redhat.com>

hw/mem/nvdimm.c

@@ -30,6 +30,7 @@
 #include "hw/mem/nvdimm.h"
 #include "hw/qdev-properties.h"
 #include "hw/mem/memory-device.h"
+#include "sysemu/hostmem.h"
 
 static void nvdimm_get_label_size(Object *obj, Visitor *v, const char *name,
                                   void *opaque, Error **errp)

hw/virtio/virtio-pmem.c

@@ -21,6 +21,7 @@
 #include "hw/virtio/virtio-access.h"
 #include "standard-headers/linux/virtio_ids.h"
 #include "standard-headers/linux/virtio_pmem.h"
+#include "sysemu/hostmem.h"
 #include "block/aio.h"
 #include "block/thread-pool.h"
 

include/hw/mem/pc-dimm.h

@@ -17,7 +17,6 @@
 #define QEMU_PC_DIMM_H
 
 #include "exec/memory.h"
-#include "sysemu/hostmem.h"
 #include "hw/qdev-core.h"
 
 #define TYPE_PC_DIMM "pc-dimm"

include/hw/virtio/virtio-pmem.h

@@ -16,7 +16,6 @@
 
 #include "hw/virtio/virtio.h"
 #include "qapi/qapi-types-misc.h"
-#include "sysemu/hostmem.h"
 
 #define TYPE_VIRTIO_PMEM "virtio-pmem"
 

include/qemu/typedefs.h

@@ -49,6 +49,7 @@ typedef struct FWCfgEntry FWCfgEntry;
 typedef struct FWCfgIoState FWCfgIoState;
 typedef struct FWCfgMemState FWCfgMemState;
 typedef struct FWCfgState FWCfgState;
+typedef struct HostMemoryBackend HostMemoryBackend;
 typedef struct HVFX86EmulatorState HVFX86EmulatorState;
 typedef struct I2CBus I2CBus;
 typedef struct I2SCodec I2SCodec;

include/sysemu/hostmem.h

@@ -27,7 +27,6 @@
 #define MEMORY_BACKEND_CLASS(klass) \
     OBJECT_CLASS_CHECK(HostMemoryBackendClass, (klass), TYPE_MEMORY_BACKEND)
 
-typedef struct HostMemoryBackend HostMemoryBackend;
 typedef struct HostMemoryBackendClass HostMemoryBackendClass;
 
 /**