diff options
| author | Longpeng <longpeng2@huawei.com> | 2022-03-15 11:25:51 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-03-28 16:53:00 -0400 |
| commit | a61280ddddaa45f95b60dd54c05f8e0e5b6810b7 (patch) | |
| tree | f31e76d3b574d121c152341b47e065d2b4f4d1ab /include/uapi | |
| parent | f1781bedea8cae7f26aa0f20a00017ab746d4d4c (diff) | |
vdpa: support exposing the config size to userspace
- GET_CONFIG_SIZE: return the size of the virtio config space.
The size contains the fields which are conditional on feature
bits.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Longpeng <longpeng2@huawei.com>
Link: https://lore.kernel.org/r/20220315032553.455-2-longpeng2@huawei.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/vhost.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h index c998860d7bbc..bc74e95a273a 100644 --- a/include/uapi/linux/vhost.h +++ b/include/uapi/linux/vhost.h @@ -150,4 +150,8 @@ /* Get the valid iova range */ #define VHOST_VDPA_GET_IOVA_RANGE _IOR(VHOST_VIRTIO, 0x78, \ struct vhost_vdpa_iova_range) + +/* Get the config size */ +#define VHOST_VDPA_GET_CONFIG_SIZE _IOR(VHOST_VIRTIO, 0x79, __u32) + #endif |