The vdpa_sim device supports ownership transfer to a new process, so
advertise VHOST_BACKEND_F_NEW_OWNER. User virtual addresses are used
by the software iommu, so VHOST_IOTLB_REMAP is required after
VHOST_NEW_OWNER, so advertise VHOST_BACKEND_F_IOTLB_REMAP.
Signed-off-by: Steve Sistare <steven.sistare@xxxxxxxxxx>
---
drivers/vdpa/vdpa_sim/vdpa_sim.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index 8734834983cb..d037869d8a89 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -430,7 +430,13 @@ static u64 vdpasim_get_device_features(struct vdpa_device *vdpa)
static u64 vdpasim_get_backend_features(const struct vdpa_device *vdpa)
{
- return BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK);
+ u64 features = BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK) |
+ BIT_ULL(VHOST_BACKEND_F_NEW_OWNER);
+
+ if (use_va)
+ features += BIT_ULL(VHOST_BACKEND_F_IOTLB_REMAP);
+
+ return features;
}
static int vdpasim_set_driver_features(struct vdpa_device *vdpa, u64 features)
--
2.39.3
