@@ -424,7 +424,8 @@ static void virtio_mmio_write(void *opaque, hwaddr offset, uint64_t value,
virtio_update_irq(vdev);
break;
case VIRTIO_MMIO_STATUS:
- if (!(value & VIRTIO_CONFIG_S_DRIVER_OK)) {
+ if (!(value & VIRTIO_CONFIG_S_DRIVER_OK) &&
+ !virtio_vdev_has_feature(vdev, VIRTIO_F_NOTIFICATION_DATA)) {
virtio_mmio_stop_ioeventfd(proxy);
}
@@ -436,7 +437,8 @@ static void virtio_mmio_write(void *opaque, hwaddr offset, uint64_t value,
virtio_set_status(vdev, value & 0xff);
- if (value & VIRTIO_CONFIG_S_DRIVER_OK) {
+ if ((value & VIRTIO_CONFIG_S_DRIVER_OK) &&
+ !virtio_vdev_has_feature(vdev, VIRTIO_F_NOTIFICATION_DATA)) {
virtio_mmio_start_ioeventfd(proxy);
}
Prevent ioeventfd from being enabled/disabled when a virtio-mmio device has negotiated the VIRTIO_F_NOTIFICATION_DATA transport feature. Due to ioeventfd not being able to carry the extra data associated with this feature, the ioeventfd should be left in a disabled state for emulated virtio-mmio devices using this feature. Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com> --- hw/virtio/virtio-mmio.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)