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| author | Eugenio Pérez <eperezma@redhat.com> | 2026-01-19 15:32:59 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2026-01-28 15:32:17 -0500 |
| commit | 3543b04a4ea3de78bdc420350d21c538efd6116c (patch) | |
| tree | 720cb0f38deb12837e0dfc989d7f1d0c17da2562 /drivers/vhost | |
| parent | 0d215afdc8199ef9702567778bbc781449f48e50 (diff) | |
| download | linux-next-3543b04a4ea3de78bdc420350d21c538efd6116c.tar.gz linux-next-3543b04a4ea3de78bdc420350d21c538efd6116c.zip | |
vhost: forbid change vq groups ASID if DRIVER_OK is set
Only vdpa_sim support it. Forbid this behaviour as there is no use for
it right now, we can always enable it in the future with a feature flag.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20260119143306.1818855-7-eperezma@redhat.com>
Diffstat (limited to 'drivers/vhost')
| -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 9d25b735b43d..3f0184d42075 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -682,6 +682,8 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd, return -EFAULT; if (idx >= vdpa->ngroups || s.num >= vdpa->nas) return -EINVAL; + if (ops->get_status(vdpa) & VIRTIO_CONFIG_S_DRIVER_OK) + return -EBUSY; if (!ops->set_group_asid) return -EOPNOTSUPP; return ops->set_group_asid(vdpa, idx, s.num); |