diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2015-06-04 12:34:23 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-06-10 18:15:05 +0200 |
| commit | b8f059081d93f1802480059d1d49fe5c1d32f60c (patch) | |
| tree | 1e066b355ef4f9a013e18aac4c2840f0fa1bee24 | |
| parent | dfb8e184db758bff275f94f7aa634300886cfe21 (diff) | |
virtio: generation counter support
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/virtio/virtio-pci.c | 2 | ||||
| -rw-r--r-- | hw/virtio/virtio.c | 1 | ||||
| -rw-r--r-- | include/hw/virtio/virtio.h | 1 |
3 files changed, 3 insertions, 1 deletions
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 8fc3c4ea9b..7805bddc74 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -977,7 +977,7 @@ static uint64_t virtio_pci_common_read(void *opaque, hwaddr addr, val = vdev->status; break; case VIRTIO_PCI_COMMON_CFGGENERATION: - val = 0; /* TODO */ + val = vdev->generation; break; case VIRTIO_PCI_COMMON_Q_SELECT: val = vdev->queue_sel; diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 8a6ebae368..cae5ecab19 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -930,6 +930,7 @@ void virtio_notify_config(VirtIODevice *vdev) return; vdev->isr |= 0x03; + vdev->generation++; virtio_notify_vector(vdev, vdev->config_vector); } diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index df8991357f..b9e36f95d3 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -78,6 +78,7 @@ struct VirtIODevice size_t config_len; void *config; uint16_t config_vector; + uint32_t generation; int nvectors; VirtQueue *vq; uint16_t device_id; |