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virtio: postpone the execution of event_notifier_cleanup function

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Use the EventNotifier's cleanup callback function to execute the
event_notifier_cleanup function after kvm unregistered the eventfd.

This change supports running the virtio_bus_set_host_notifier
function inside a memory region transaction. Otherwise, a closed
fd is sent to kvm, which results in a failure.

Signed-off-by: Gal Hammer <ghammer@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gal Hammer 2018-01-14 12:06:55 +02:00 • committed by Michael S. Tsirkin
parent f87d72f5c5
commit 4fe6d78b2e
2 changed files with 15 additions and 8 deletions
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4
accel/kvm/kvm-all.c
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@ -812,6 +812,10 @@ static void kvm_mem_ioeventfd_del(MemoryListener *listener,
if (r < 0) {
abort();
}
if (e->cleanup) {
e->cleanup(e);
}
}
static void kvm_io_ioeventfd_add(MemoryListener *listener,