Stefan Hajnoczi cd7fdfe59f dataplane: avoid reentrancy during virtio_blk_data_plane_stop() ... When dataplane is stopping, the s->vdev->binding->set_host_notifier(..., false) call can invoke the virtqueue handler if an ioeventfd notification is pending. This causes hw/virtio-blk.c to invoke virtio_blk_data_plane_start() before virtio_blk_data_plane_stop() returns! The result is that we try to restart dataplane while trying to stop it and the following assertion is raised: msix_set_mask_notifier: Assertion `!dev->msix_mask_notifier' failed. Although the code was intended to prevent this scenario, the s->started boolean isn't enough. Add s->stopping so that we can postpone clearing s->started until we've completely stopped dataplane. This way, virtqueue handler calls during virtio_blk_data_plane_stop() are ignored. When dataplane is legitimately started again later we already self-kick ourselves to resume processing. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>		2013-01-18 16:57:59 +01:00
..
event-poll.c	dataplane: add event loop	2013-01-02 15:56:21 +01:00
event-poll.h	dataplane: add event loop	2013-01-02 15:56:21 +01:00
hostmem.c
hostmem.h
ioq.c	dataplane: add Linux AIO request queue	2013-01-02 15:58:03 +01:00
ioq.h	dataplane: add Linux AIO request queue	2013-01-02 15:58:03 +01:00
Makefile.objs	dataplane: use linux-headers/ for virtio includes	2013-01-03 07:13:25 -06:00
virtio-blk.c	dataplane: avoid reentrancy during virtio_blk_data_plane_stop()	2013-01-18 16:57:59 +01:00
virtio-blk.h	dataplane: add virtio-blk data plane code	2013-01-02 16:08:47 +01:00
vring.c	dataplane: add virtqueue vring code	2013-01-02 15:55:47 +01:00
vring.h	dataplane: add virtqueue vring code	2013-01-02 15:55:47 +01:00