Stefan Hajnoczi 1010cadf62 virtio-blk: fix race between .ioeventfd_stop() and vq handler ... If the main loop thread invokes .ioeventfd_stop() just as the vq handler function begins in the IOThread then the handler may lose the race for the AioContext lock. By the time the vq handler is able to acquire the AioContext lock the ioeventfd has already been removed and the handler isn't supposed to run anymore! Use the new aio_wait_bh_oneshot() function to perform ioeventfd removal from within the IOThread. This way no races with the vq handler are possible. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 20180307144205.20619-3-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>		2018-03-08 17:38:51 +00:00
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Makefile.objs	dataplane: delete IOQueue since it is no longer used	2014-06-04 09:56:12 +02:00
trace-events	docs: fix broken paths to docs/devel/tracing.txt	2017-07-31 13:12:53 +03:00
virtio-blk.c	virtio-blk: fix race between .ioeventfd_stop() and vq handler	2018-03-08 17:38:51 +00:00
virtio-blk.h	hw/block: Fix the return type	2017-12-19 09:25:28 +00:00