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>

1 files changed, 40 insertions, 62 deletions

diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 56d85062ff..01f1351554 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -1492,7 +1492,7 @@ static void virtio_net_set_multiqueue(VirtIONet *n, int multiqueue)
     virtio_net_set_queues(n);
 }
 
-static void virtio_net_save(QEMUFile *f, void *opaque)
+static void virtio_net_save(QEMUFile *f, void *opaque, size_t size)
 {
     VirtIONet *n = opaque;
     VirtIODevice *vdev = VIRTIO_DEVICE(n);
@@ -1538,15 +1538,12 @@ static void virtio_net_save_device(VirtIODevice *vdev, QEMUFile *f)
     }
 }
 
-static int virtio_net_load(QEMUFile *f, void *opaque, int version_id)
+static int virtio_net_load(QEMUFile *f, void *opaque, size_t size)
 {
     VirtIONet *n = opaque;
     VirtIODevice *vdev = VIRTIO_DEVICE(n);
 
-    if (version_id < 2 || version_id > VIRTIO_NET_VM_VERSION)
-        return -EINVAL;
-
-    return virtio_load(vdev, f, version_id);
+    return virtio_load(vdev, f, VIRTIO_NET_VM_VERSION);
 }
 
 static int virtio_net_load_device(VirtIODevice *vdev, QEMUFile *f,
@@ -1562,68 +1559,49 @@ static int virtio_net_load_device(VirtIODevice *vdev, QEMUFile *f,
                                virtio_vdev_has_feature(vdev,
                                                        VIRTIO_F_VERSION_1));
 
-    if (version_id >= 3)
-        n->status = qemu_get_be16(f);
+    n->status = qemu_get_be16(f);
 
-    if (version_id >= 4) {
-        if (version_id < 8) {
-            n->promisc = qemu_get_be32(f);
-            n->allmulti = qemu_get_be32(f);
-        } else {
-            n->promisc = qemu_get_byte(f);
-            n->allmulti = qemu_get_byte(f);
-        }
-    }
+    n->promisc = qemu_get_byte(f);
+    n->allmulti = qemu_get_byte(f);
 
-    if (version_id >= 5) {
-        n->mac_table.in_use = qemu_get_be32(f);
-        /* MAC_TABLE_ENTRIES may be different from the saved image */
-        if (n->mac_table.in_use <= MAC_TABLE_ENTRIES) {
-            qemu_get_buffer(f, n->mac_table.macs,
-                            n->mac_table.in_use * ETH_ALEN);
-        } else {
-            int64_t i;
-
-            /* Overflow detected - can happen if source has a larger MAC table.
-             * We simply set overflow flag so there's no need to maintain the
-             * table of addresses, discard them all.
-             * Note: 64 bit math to avoid integer overflow.
-             */
-            for (i = 0; i < (int64_t)n->mac_table.in_use * ETH_ALEN; ++i) {
-                qemu_get_byte(f);
-            }
-            n->mac_table.multi_overflow = n->mac_table.uni_overflow = 1;
-            n->mac_table.in_use = 0;
+    n->mac_table.in_use = qemu_get_be32(f);
+    /* MAC_TABLE_ENTRIES may be different from the saved image */
+    if (n->mac_table.in_use <= MAC_TABLE_ENTRIES) {
+        qemu_get_buffer(f, n->mac_table.macs,
+                        n->mac_table.in_use * ETH_ALEN);
+    } else {
+        int64_t i;
+
+        /* Overflow detected - can happen if source has a larger MAC table.
+         * We simply set overflow flag so there's no need to maintain the
+         * table of addresses, discard them all.
+         * Note: 64 bit math to avoid integer overflow.
+         */
+        for (i = 0; i < (int64_t)n->mac_table.in_use * ETH_ALEN; ++i) {
+            qemu_get_byte(f);
         }
+        n->mac_table.multi_overflow = n->mac_table.uni_overflow = 1;
+        n->mac_table.in_use = 0;
     }
  
-    if (version_id >= 6)
-        qemu_get_buffer(f, (uint8_t *)n->vlans, MAX_VLAN >> 3);
+    qemu_get_buffer(f, (uint8_t *)n->vlans, MAX_VLAN >> 3);
 
-    if (version_id >= 7) {
-        if (qemu_get_be32(f) && !peer_has_vnet_hdr(n)) {
-            error_report("virtio-net: saved image requires vnet_hdr=on");
-            return -1;
-        }
+    if (qemu_get_be32(f) && !peer_has_vnet_hdr(n)) {
+        error_report("virtio-net: saved image requires vnet_hdr=on");
+        return -1;
     }
 
-    if (version_id >= 9) {
-        n->mac_table.multi_overflow = qemu_get_byte(f);
-        n->mac_table.uni_overflow = qemu_get_byte(f);
-    }
+    n->mac_table.multi_overflow = qemu_get_byte(f);
+    n->mac_table.uni_overflow = qemu_get_byte(f);
 
-    if (version_id >= 10) {
-        n->alluni = qemu_get_byte(f);
-        n->nomulti = qemu_get_byte(f);
-        n->nouni = qemu_get_byte(f);
-        n->nobcast = qemu_get_byte(f);
-    }
+    n->alluni = qemu_get_byte(f);
+    n->nomulti = qemu_get_byte(f);
+    n->nouni = qemu_get_byte(f);
+    n->nobcast = qemu_get_byte(f);
 
-    if (version_id >= 11) {
-        if (qemu_get_byte(f) && !peer_has_ufo(n)) {
-            error_report("virtio-net: saved image requires TUN_F_UFO support");
-            return -1;
-        }
+    if (qemu_get_byte(f) && !peer_has_ufo(n)) {
+        error_report("virtio-net: saved image requires TUN_F_UFO support");
+        return -1;
     }
 
     if (n->max_queues > 1) {
@@ -1809,8 +1787,6 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp)
     nc->rxfilter_notify_enabled = 1;
 
     n->qdev = dev;
-    register_savevm(dev, "virtio-net", -1, VIRTIO_NET_VM_VERSION,
-                    virtio_net_save, virtio_net_load, n);
 }
 
 static void virtio_net_device_unrealize(DeviceState *dev, Error **errp)
@@ -1822,8 +1798,6 @@ static void virtio_net_device_unrealize(DeviceState *dev, Error **errp)
     /* This will stop vhost backend if appropriate. */
     virtio_net_set_status(vdev, 0);
 
-    unregister_savevm(dev, "virtio-net", n);
-
     g_free(n->netclient_name);
     n->netclient_name = NULL;
     g_free(n->netclient_type);
@@ -1858,6 +1832,9 @@ static void virtio_net_instance_init(Object *obj)
                                   DEVICE(n), NULL);
 }
 
+VMSTATE_VIRTIO_DEVICE(net, VIRTIO_NET_VM_VERSION, virtio_net_load,
+                      virtio_net_save);
+
 static Property virtio_net_properties[] = {
     DEFINE_PROP_BIT("csum", VirtIONet, host_features, VIRTIO_NET_F_CSUM, true),
     DEFINE_PROP_BIT("guest_csum", VirtIONet, host_features,
@@ -1912,6 +1889,7 @@ static void virtio_net_class_init(ObjectClass *klass, void *data)
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
 
     dc->props = virtio_net_properties;
+    dc->vmsd = &vmstate_virtio_net;
     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
     vdc->realize = virtio_net_device_realize;
     vdc->unrealize = virtio_net_device_unrealize;