diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2016-10-21 22:48:08 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-10-30 19:51:32 +0200 |
| commit | 8e93cef14e6f32adf6914b30b096039e6264f0e3 (patch) | |
| tree | abf77c2c554b5efcda21167689f61c9e04f4a0b2 /hw/virtio/virtio-bus.c | |
| parent | ff4c07df67f098234d9e49850435ccb49b8cbbdc (diff) | |
| download | qemu-8e93cef14e6f32adf6914b30b096039e6264f0e3.tar.gz | |
virtio: introduce virtio_device_ioeventfd_enabled
This will be used to forbid iothread configuration when the
proxy does not allow using ioeventfd. To simplify the implementation,
change the direction of the ioeventfd_disabled callback too.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/virtio/virtio-bus.c')
| -rw-r--r-- | hw/virtio/virtio-bus.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c index a8d2bd89c5..3ffec66d59 100644 --- a/hw/virtio/virtio-bus.c +++ b/hw/virtio/virtio-bus.c @@ -193,7 +193,7 @@ int virtio_bus_start_ioeventfd(VirtioBusState *bus) VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev); int r; - if (!k->ioeventfd_assign || k->ioeventfd_disabled(proxy)) { + if (!k->ioeventfd_assign || !k->ioeventfd_enabled(proxy)) { return -ENOSYS; } if (bus->ioeventfd_started || bus->ioeventfd_disabled) { @@ -223,6 +223,14 @@ void virtio_bus_stop_ioeventfd(VirtioBusState *bus) bus->ioeventfd_started = false; } +bool virtio_bus_ioeventfd_enabled(VirtioBusState *bus) +{ + VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(bus); + DeviceState *proxy = DEVICE(BUS(bus)->parent); + + return k->ioeventfd_assign && k->ioeventfd_enabled(proxy); +} + /* * This function switches from/to the generic ioeventfd handler. * assign==false means 'use generic ioeventfd handler'. |