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| author | Jason Wang <jasowang@redhat.com> | 2022-06-09 12:19:01 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-06-09 00:26:35 -0400 |
| commit | 00d1f546470d89e072dd3cda12b5c794341e7268 (patch) | |
| tree | 1aa067f50995425114f84706eaf2f526b2211eab /drivers | |
| parent | acb0055e187334554398a381a16de72f1a3d47bb (diff) | |
| download | linux-stable-00d1f546470d89e072dd3cda12b5c794341e7268.tar.gz linux-stable-00d1f546470d89e072dd3cda12b5c794341e7268.tar.bz2 linux-stable-00d1f546470d89e072dd3cda12b5c794341e7268.zip | |
vdpa: make get_vq_group and set_group_asid optional
This patch makes get_vq_group and set_group_asid optional. This is
needed to unbreak the vDPA parent that doesn't support multiple
address spaces.
Cc: Gautam Dawar <gautam.dawar@xilinx.com>
Fixes: aaca8373c4b1 ("vhost-vdpa: support ASID based IOTLB API")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220609041901.2029-1-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/vhost/vdpa.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 935a1d0ddb97..5ad2596c6e8a 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -499,6 +499,8 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd, ops->set_vq_ready(vdpa, idx, s.num); return 0; case VHOST_VDPA_GET_VRING_GROUP: + if (!ops->get_vq_group) + return -EOPNOTSUPP; s.index = idx; s.num = ops->get_vq_group(vdpa, idx); if (s.num >= vdpa->ngroups) |