diff options
| author | Gautam Dawar <gautam.dawar@xilinx.com> | 2022-03-30 23:33:51 +0530 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-05-31 12:44:30 -0400 |
| commit | 3ace88bd37436abc84906312146fe5158a469142 (patch) | |
| tree | 9a18b14f0bff075c6d8210a4f2aebbc5c0c50c4c /drivers/vhost/vdpa.c | |
| parent | 3d5698793897a2b9c0060d899881d1a0591630d5 (diff) | |
vhost-vdpa: introduce uAPI to get the number of virtqueue groups
Follows the vDPA support for multiple address spaces, this patch
introduce uAPI for the userspace to know the number of virtqueue
groups supported by the vDPA device.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Gautam Dawar <gdawar@xilinx.com>
Message-Id: <20220330180436.24644-12-gdawar@xilinx.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/vdpa.c')
| -rw-r--r-- | drivers/vhost/vdpa.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index cd1bee536c46..92f78df0f685 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -559,6 +559,10 @@ static long vhost_vdpa_unlocked_ioctl(struct file *filep, case VHOST_VDPA_GET_VRING_NUM: r = vhost_vdpa_get_vring_num(v, argp); break; + case VHOST_VDPA_GET_GROUP_NUM: + r = copy_to_user(argp, &v->vdpa->ngroups, + sizeof(v->vdpa->ngroups)); + break; case VHOST_SET_LOG_BASE: case VHOST_SET_LOG_FD: r = -ENOIOCTLCMD; |