Collection of iova tree fixes detected preparing live migration with real
devices and multiqueue.

These cannot be triggered in simple setups (vdpa_sim_net, no display, no
device reset with different features) but it's possible to trigger them with
real devices or if the kernel fails some step like memory mapping / unmapping.

First two patches are already in the list at [1]. Last one is not a fix by
itself but a straightforward merge of the same code.

[1] https://lists.nongnu.org/archive/html/qemu-devel/2022-08/msg00773.html

Eugenio Pérez (7):
  vdpa: Skip the maps not in the iova tree
  vdpa: do not save failed dma maps in SVQ iova tree
  util: make a copy of iova_tree_remove_parameter
  vdpa: Remove SVQ vring from iova_tree at shutdown
  vdpa: Make SVQ vring unmapping return void
  vhost: Always store new kick fd on vhost_svq_set_svq_kick_fd
  vdpa: Use ring hwaddr at vhost_vdpa_svq_unmap_ring

 hw/virtio/vhost-shadow-virtqueue.c |  4 +-
 hw/virtio/vhost-vdpa.c             | 70 +++++++++++++++---------------
 util/iova-tree.c                   |  4 +-
 3 files changed, 41 insertions(+), 37 deletions(-)

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2.31.1