This patch introduces the uAPI for getting the number of address spaces supported by this vDPA device. Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx> Signed-off-by: Gautam Dawar <gdawar@xxxxxxxxxx> --- drivers/vhost/vdpa.c | 3 +++ include/uapi/linux/vhost.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 7a8a99cef8a4..733b305c5029 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -542,6 +542,9 @@ 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; diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h index 8a4e6e426bbf..8762911a3cb8 100644 --- a/include/uapi/linux/vhost.h +++ b/include/uapi/linux/vhost.h @@ -148,4 +148,6 @@ /* Get the number of virtqueue groups. */ #define VHOST_VDPA_GET_GROUP_NUM _IOR(VHOST_VIRTIO, 0x79, unsigned int) +/* Get the number of address spaces. */ +#define VHOST_VDPA_GET_AS_NUM _IOR(VHOST_VIRTIO, 0x7A, unsigned int) #endif -- 2.25.0
