@@ -532,6 +532,9 @@ static long vhost_vdpa_unlocked_ioctl(struct file *filep,
r = copy_to_user(argp, &v->vdpa->ngroups,
sizeof(v->vdpa->ngroups));
break;
+ case VHOST_VDPA_GET_AS_NUM:
+ r = copy_to_user(argp, &v->vdpa->nas, sizeof(v->vdpa->nas));
+ break;
case VHOST_SET_LOG_BASE:
case VHOST_SET_LOG_FD:
r = -ENOIOCTLCMD;
@@ -145,4 +145,6 @@
/* Get the number of virtqueue groups. */
#define VHOST_VDPA_GET_GROUP_NUM _IOR(VHOST_VIRTIO, 0x78, unsigned int)
+/* Get the number of address spaces. */
+#define VHOST_VDPA_GET_AS_NUM _IOR(VHOST_VIRTIO, 0x79, unsigned int)
#endif
A new uAPI is introduced for the userspace to know the address spaces that is supported by a specific device. Signed-off-by: Jason Wang <jasowang@redhat.com> --- drivers/vhost/vdpa.c | 3 +++ include/uapi/linux/vhost.h | 2 ++ 2 files changed, 5 insertions(+)