[Qemu-devel] [PATCH v3 0/4] vl: introduce vm_shutdown()

[Stefan Hajnoczi <stefanha@redhat.com>]

v3:
 * Rebase on qemu.git/master after AIO_WAIT_WHILE() was merged [Fam]
v2:
 * Tackle the .ioeventfd_stop() vs vq handler race by removing the ioeventfd
   from a BH in the IOThread [Fam]

There are several race conditions in virtio-blk/virtio-scsi dataplane code.
This patch series addresses them, see the commit description for details on the
individual cases.

Stefan Hajnoczi (4):
  block: add aio_wait_bh_oneshot()
  virtio-blk: fix race between .ioeventfd_stop() and vq handler
  virtio-scsi: fix race between .ioeventfd_stop() and vq handler
  vl: introduce vm_shutdown()

 include/block/aio-wait.h        | 13 +++++++++++++
 include/sysemu/iothread.h       |  1 -
 include/sysemu/sysemu.h         |  1 +
 cpus.c                          | 16 +++++++++++++---
 hw/block/dataplane/virtio-blk.c | 24 +++++++++++++++++-------
 hw/scsi/virtio-scsi-dataplane.c |  9 +++++----
 iothread.c                      | 31 -------------------------------
 util/aio-wait.c                 | 31 +++++++++++++++++++++++++++++++
 vl.c                            | 13 +++----------
 9 files changed, 83 insertions(+), 56 deletions(-)

-- 
2.14.3