Some devices want to know their status, use this hook to allow them to
get that notification.
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
tools/kvm/include/kvm/virtio.h | 1 +
tools/kvm/virtio/pci.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/tools/kvm/include/kvm/virtio.h b/tools/kvm/include/kvm/virtio.h
index 924279b..269ea4a 100644
--- a/tools/kvm/include/kvm/virtio.h
+++ b/tools/kvm/include/kvm/virtio.h
@@ -80,6 +80,7 @@ struct virtio_ops {
void (*notify_vq_eventfd)(struct kvm *kvm, void *dev, u32 vq, u32 efd);
int (*signal_vq)(struct kvm *kvm, struct virtio_device *vdev, u32 queueid);
int (*signal_config)(struct kvm *kvm, struct virtio_device *vdev);
+ void (*notify_status)(struct kvm *kvm, void *dev, u8 status);
int (*init)(struct kvm *kvm, void *dev, struct virtio_device *vdev,
int device_id, int subsys_id, int class);
int (*exit)(struct kvm *kvm, struct virtio_device *vdev);
diff --git a/tools/kvm/virtio/pci.c b/tools/kvm/virtio/pci.c
index 227d567..fec8ce0 100644
--- a/tools/kvm/virtio/pci.c
+++ b/tools/kvm/virtio/pci.c
@@ -210,6 +210,8 @@ static bool virtio_pci__io_out(struct ioport *ioport, struct kvm *kvm, u16 port,
break;
case VIRTIO_PCI_STATUS:
vpci->status = ioport__read8(data);
+ if (vdev->ops->notify_status)
+ vdev->ops->notify_status(kvm, vpci->dev, vpci->status);
break;
default:
ret = virtio_pci__specific_io_out(kvm, vdev, port, data, size, offset);
--
1.8.2.1
--
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