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

virtio: features, tests

libqos update with support for virtio 1.
Packed ring support for virtio.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Fri 25 Oct 2019 12:47:59 BST
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# 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: (25 commits)
  virtio: drop unused virtio_device_stop_ioeventfd() function
  libqos: add VIRTIO PCI 1.0 support
  libqos: extract Legacy virtio-pci.c code
  libqos: make the virtio-pci BAR index configurable
  libqos: expose common virtqueue setup/cleanup functions
  libqos: add MSI-X callbacks to QVirtioPCIDevice
  libqos: pass full QVirtQueue to set_queue_address()
  libqos: add iteration support to qpci_find_capability()
  libqos: access VIRTIO 1.0 vring in little-endian
  libqos: implement VIRTIO 1.0 FEATURES_OK step
  libqos: enforce Device Initialization order
  libqos: add missing virtio-9p feature negotiation
  tests/virtio-blk-test: set up virtqueue after feature negotiation
  virtio-scsi-test: add missing feature negotiation
  libqos: extend feature bits to 64-bit
  libqos: read QVIRTIO_MMIO_VERSION register
  tests/virtio-blk-test: read config space after feature negotiation
  virtio: add property to enable packed virtqueue
  vhost_net: enable packed ring support
  virtio: event suppression support for packed ring
  ...

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

diff --cc hw/block/virtio-blk.c
index 14e9f85b8b7ef1dddde060733f23e9afcba69699,7dbdeaaab9f021ac5a637ab044ea4e48f1b14df9..dd14b9a489c8b572de2e0ee7ee9ecc7c4eca20de
--- 1/hw/block/virtio-blk.c
--- 2/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@@ -1206,10 -1206,14 +1206,15 @@@ static void virtio_blk_device_unrealize
  {
      VirtIODevice *vdev = VIRTIO_DEVICE(dev);
      VirtIOBlock *s = VIRTIO_BLK(dev);
+     VirtIOBlkConf *conf = &s->conf;
+     unsigned i;
  
 +    blk_drain(s->blk);
      virtio_blk_data_plane_destroy(s->dataplane);
      s->dataplane = NULL;
+     for (i = 0; i < conf->num_queues; i++) {
+         virtio_del_queue(vdev, i);
+     }
      qemu_del_vm_change_state_handler(s->change);
      blockdev_mark_auto_del(s->blk);
      virtio_cleanup(vdev);