diff options
| author | Igor Mammedov <imammedo@redhat.com> | 2015-10-06 10:37:27 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-10-22 14:34:48 +0300 |
| commit | 2ce68e4cf5be9b5176a3c3c372948d6340724d2d (patch) | |
| tree | 1454cb042a4b1ca1280dfda03bcaa1307dadb6f8 /include/hw/virtio | |
| parent | 052bd52fa978d3f04bc476137ad6e1b9a697f9bd (diff) | |
vhost: add vhost_has_free_slot() interface
it will allow for other parts of QEMU check if it's safe
to map memory region during hotplug/runtime.
That way hotplug path will have a chance to cancel
hotplug operation instead of crashing in vhost_commit().
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/virtio')
| -rw-r--r-- | include/hw/virtio/vhost-backend.h | 2 | ||||
| -rw-r--r-- | include/hw/virtio/vhost.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-backend.h index 3a0f6e2dc2..7d4a8ad968 100644 --- a/include/hw/virtio/vhost-backend.h +++ b/include/hw/virtio/vhost-backend.h @@ -26,6 +26,7 @@ typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque); typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev); typedef int (*vhost_backend_get_vq_index)(struct vhost_dev *dev, int idx); typedef int (*vhost_backend_set_vring_enable)(struct vhost_dev *dev, int enable); +typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev); typedef struct VhostOps { VhostBackendType backend_type; @@ -34,6 +35,7 @@ typedef struct VhostOps { vhost_backend_cleanup vhost_backend_cleanup; vhost_backend_get_vq_index vhost_backend_get_vq_index; vhost_backend_set_vring_enable vhost_backend_set_vring_enable; + vhost_backend_memslots_limit vhost_backend_memslots_limit; } VhostOps; extern const VhostOps user_ops; diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index c3758f3c78..080831ed67 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -59,6 +59,7 @@ struct vhost_dev { const VhostOps *vhost_ops; void *opaque; struct vhost_log *log; + QLIST_ENTRY(vhost_dev) entry; }; int vhost_dev_init(struct vhost_dev *hdev, void *opaque, @@ -83,4 +84,5 @@ uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bits, uint64_t features); void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits, uint64_t features); +bool vhost_has_free_slot(void); #endif |