Commit 7a471694 authored by Cindy Lu's avatar Cindy Lu Committed by Michael S. Tsirkin
Browse files

vhost: implement vhost_force_iommu method 



use the vhost_force_iommu callback to force enable feature bit VIRTIO_F_IOMMU_PLATFORM

Signed-off-by: default avatarCindy Lu <lulu@redhat.com>
Message-Id: <20200701145538.22333-12-lulu@redhat.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarJason Wang <jasowang@redhat.com>
parent f6c99c34

hw/virtio/vhost.c

+5 −0
Original line number Diff line number Diff line
@@ -810,6 +810,11 @@ static int vhost_dev_set_features(struct vhost_dev *dev, 
    if (!vhost_dev_has_iommu(dev)) {

        features &= ~(0x1ULL << VIRTIO_F_IOMMU_PLATFORM);

    }

    if (dev->vhost_ops->vhost_force_iommu) {

        if (dev->vhost_ops->vhost_force_iommu(dev) == true) {

            features |= 0x1ULL << VIRTIO_F_IOMMU_PLATFORM;

       }

    }

    r = dev->vhost_ops->vhost_set_features(dev, features);

    if (r < 0) {

        VHOST_OPS_DEBUG("vhost_set_features failed");