Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc, pci, virtio: new features, cleanups, fixes

- interrupt remapping for intel iommus
- a bunch of virtio cleanups
- fixes all over the place

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 21 Jul 2016 18:49:30 BST
# gpg:                using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (57 commits)
  intel_iommu: avoid unnamed fields
  virtio: Update migration docs
  virtio-gpu: Wrap in vmstate
  virtio-gpu: Use migrate_add_blocker for virgl migration blocking
  virtio-input: Wrap in vmstate
  9pfs: Wrap in vmstate
  virtio-serial: Wrap in vmstate
  virtio-net: Wrap in vmstate
  virtio-balloon: Wrap in vmstate
  virtio-rng: Wrap in vmstate
  virtio-blk: Wrap in vmstate
  virtio-scsi: Wrap in vmstate
  virtio: Migration helper function and macro
  virtio-serial: Remove old migration version support
  virtio-net: Remove old migration version support
  virtio-scsi: Replace HandleOutput typedef
  Revert "mirror: Workaround for unexpected iohandler events during completion"
  virtio-scsi: Call virtio_add_queue_aio
  virtio-blk: Call virtio_add_queue_aio
  virtio: Introduce virtio_add_queue_aio
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3 files changed, 30 insertions, 6 deletions

diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index 325354f9f3..e4f424ad4a 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -118,6 +118,8 @@ typedef struct VirtIOGPU {
         uint32_t req_3d;
         uint32_t bytes_3d;
     } stats;
+
+    Error *migration_blocker;
 } VirtIOGPU;
 
 extern const GraphicHwOps virtio_gpu_ops;
diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h
index 5e3f088f9a..a1e0cfb449 100644
--- a/include/hw/virtio/virtio-scsi.h
+++ b/include/hw/virtio/virtio-scsi.h
@@ -121,11 +121,9 @@ typedef struct VirtIOSCSIReq {
     } req;
 } VirtIOSCSIReq;
 
-typedef void (*HandleOutput)(VirtIODevice *, VirtQueue *);
-
 void virtio_scsi_common_realize(DeviceState *dev, Error **errp,
-                                HandleOutput ctrl, HandleOutput evt,
-                                HandleOutput cmd);
+                                VirtIOHandleOutput ctrl, VirtIOHandleOutput evt,
+                                VirtIOHandleOutput cmd);
 
 void virtio_scsi_common_unrealize(DeviceState *dev, Error **errp);
 void virtio_scsi_handle_event_vq(VirtIOSCSI *s, VirtQueue *vq);
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 8a681f56f1..d2490c1975 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -138,9 +138,13 @@ void virtio_cleanup(VirtIODevice *vdev);
 /* Set the child bus name. */
 void virtio_device_set_child_bus_name(VirtIODevice *vdev, char *bus_name);
 
+typedef void (*VirtIOHandleOutput)(VirtIODevice *, VirtQueue *);
+
 VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
-                            void (*handle_output)(VirtIODevice *,
-                                                  VirtQueue *));
+                            VirtIOHandleOutput handle_output);
+
+VirtQueue *virtio_add_queue_aio(VirtIODevice *vdev, int queue_size,
+                                VirtIOHandleOutput handle_output);
 
 void virtio_del_queue(VirtIODevice *vdev, int n);
 
@@ -167,6 +171,26 @@ bool virtio_should_notify(VirtIODevice *vdev, VirtQueue *vq);
 void virtio_notify(VirtIODevice *vdev, VirtQueue *vq);
 
 void virtio_save(VirtIODevice *vdev, QEMUFile *f);
+void virtio_vmstate_save(QEMUFile *f, void *opaque, size_t size);
+
+#define VMSTATE_VIRTIO_DEVICE(devname, v, getf, putf) \
+    static const VMStateDescription vmstate_virtio_ ## devname = { \
+        .name = "virtio-" #devname ,          \
+        .minimum_version_id = v,              \
+        .version_id = v,                      \
+        .fields = (VMStateField[]) {          \
+            {                                 \
+                .name = "virtio",             \
+                .info = &(const VMStateInfo) {\
+                        .name = "virtio",     \
+                        .get = getf,          \
+                        .put = putf,          \
+                    },                        \
+                .flags = VMS_SINGLE,          \
+            },                                \
+            VMSTATE_END_OF_LIST()             \
+        }                                     \
+    }
 
 int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id);