diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2017-02-17 04:52:16 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-02-17 21:52:30 +0200 |
| commit | b4b9862b536f41fcdf6ad193a306a852c5b5b71a (patch) | |
| tree | 4656b728a41bc7d5f3089d08f65e66dbc1e8e90d /hw | |
| parent | 97cd965c070152bc626c7507df9fb356bbe1cd81 (diff) | |
virtio: Fix no interrupt when not creating msi controller
For ARM virt machine, if we use virt-2.7 which will not create ITS node,
the virtio-net can not recieve interrupts so it can't get ip address
through dhcp.
This fixes commit 83d768b(virtio: set ISR on dataplane notifications).
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/virtio/virtio.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index c08e50fb41..23483c752f 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1584,6 +1584,12 @@ void virtio_notify_irqfd(VirtIODevice *vdev, VirtQueue *vq) event_notifier_set(&vq->guest_notifier); } +static void virtio_irq(VirtQueue *vq) +{ + virtio_set_isr(vq->vdev, 0x1); + virtio_notify_vector(vq->vdev, vq->vector); +} + void virtio_notify(VirtIODevice *vdev, VirtQueue *vq) { bool should_notify; @@ -1596,8 +1602,7 @@ void virtio_notify(VirtIODevice *vdev, VirtQueue *vq) } trace_virtio_notify(vdev, vq); - virtio_set_isr(vq->vdev, 0x1); - virtio_notify_vector(vdev, vq->vector); + virtio_irq(vq); } void virtio_notify_config(VirtIODevice *vdev) @@ -2240,7 +2245,7 @@ static void virtio_queue_guest_notifier_read(EventNotifier *n) { VirtQueue *vq = container_of(n, VirtQueue, guest_notifier); if (event_notifier_test_and_clear(n)) { - virtio_notify_vector(vq->vdev, vq->vector); + virtio_irq(vq); } } |