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| author | Julia Suvorova <jusual@redhat.com> | 2019-10-18 16:28:56 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2019-10-25 14:38:24 +0200 |
| commit | 7bfde688fb1b05fa5f73d2498be959e59e1e1d57 (patch) | |
| tree | 439f21e6654beb4c1b27ea1ae3f42cffe8601f39 /hw/block | |
| parent | 58560ad254fbda71d4daa6622d71683190070ee2 (diff) | |
| download | qemu-7bfde688fb1b05fa5f73d2498be959e59e1e1d57.zip qemu-7bfde688fb1b05fa5f73d2498be959e59e1e1d57.tar.gz qemu-7bfde688fb1b05fa5f73d2498be959e59e1e1d57.tar.bz2 | |
virtio-blk: Add blk_drain() to virtio_blk_device_unrealize()
QEMU does not wait for completed I/O requests, assuming that the guest
driver will reset the device before calling unrealize(). This does not
happen on Windows, and QEMU crashes in virtio_notify(), getting the
result of a completed I/O request on hot-unplugged device.
Signed-off-by: Julia Suvorova <jusual@redhat.com>
Message-Id: <20191018142856.31870-1-jusual@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw/block')
| -rw-r--r-- | hw/block/virtio-blk.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index ed2ddeb..14e9f85 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -1207,6 +1207,7 @@ static void virtio_blk_device_unrealize(DeviceState *dev, Error **errp) VirtIODevice *vdev = VIRTIO_DEVICE(dev); VirtIOBlock *s = VIRTIO_BLK(dev); + blk_drain(s->blk); virtio_blk_data_plane_destroy(s->dataplane); s->dataplane = NULL; qemu_del_vm_change_state_handler(s->change); |