[Qemu-devel] [PATCH 0/8] virtio: allow migration with dataplane

[Paolo Bonzini]

Currently, dataplane threads are shut down during migration because
vring.c is not able to track dirty memory.  However, all the relevant
parts of QEMU have been made thread-safe now, so we can drop vring.c
completely.  With these patches, virtio-dataplane is now simply "virtio
with ioeventfd in a different AioContext".

Paolo Bonzini (8):
  block-migration: acquire AioContext as necessary
  vring: make vring_enable_notification return void
  virtio: add AioContext-specific function for host notifiers
  virtio: export vring_notify as virtio_should_notify
  virtio-blk: fix "disabled data plane" mode
  virtio-blk: do not use vring in dataplane
  virtio-scsi: do not use vring in dataplane
  vring: remove

 hw/block/dataplane/virtio-blk.c               | 130 +-----
 hw/block/dataplane/virtio-blk.h               |   1 +
 hw/block/virtio-blk.c                         |  51 +--
 hw/scsi/virtio-scsi-dataplane.c               | 196 ++-------
 hw/scsi/virtio-scsi.c                         |  52 +--
 hw/virtio/Makefile.objs                       |   1 -
 hw/virtio/dataplane/Makefile.objs             |   1 -
 hw/virtio/dataplane/vring.c                   | 549 --------------------------
 hw/virtio/virtio.c                            |  20 +-
 include/hw/virtio/dataplane/vring-accessors.h |  75 ----
 include/hw/virtio/dataplane/vring.h           |  51 ---
 include/hw/virtio/virtio-blk.h                |   4 +-
 include/hw/virtio/virtio-scsi.h               |  21 +-
 include/hw/virtio/virtio.h                    |   3 +
 migration/block.c                             |  61 ++-
 trace-events                                  |   3 -
 16 files changed, 134 insertions(+), 1085 deletions(-)
 delete mode 100644 hw/virtio/dataplane/Makefile.objs
 delete mode 100644 hw/virtio/dataplane/vring.c
 delete mode 100644 include/hw/virtio/dataplane/vring-accessors.h
 delete mode 100644 include/hw/virtio/dataplane/vring.h

-- 
1.8.3.1