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virtio-blk: Add blk_drain() to virtio_blk_device_unrealize()
authorJulia Suvorova <jusual@redhat.com>
Fri, 18 Oct 2019 14:28:56 +0000 (16:28 +0200)
committerStefan Hajnoczi <stefanha@redhat.com>
Fri, 25 Oct 2019 12:38:24 +0000 (14:38 +0200)
commit7bfde688fb1b05fa5f73d2498be959e59e1e1d57
tree439f21e6654beb4c1b27ea1ae3f42cffe8601f39tree | snapshot
parent58560ad254fbda71d4daa6622d71683190070ee2commit | diff
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>
hw/block/virtio-blk.c diff | blob | history
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