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NVIDIA: SAUCE: hw/vfio: thread vf-token through iommufd bind #38

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NVIDIA: SAUCE: hw/vfio: thread vf-token through iommufd bind #38

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10 changes: 10 additions & 0 deletions hw/vfio/iommufd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -129,6 +129,7 @@ static void iommufd_cdev_kvm_device_del(VFIODevice *vbasedev)

static bool iommufd_cdev_connect_and_bind(VFIODevice *vbasedev, Error **errp)
{
VFIOPCIDevice *vdev = vfio_pci_from_vfio_device(vbasedev);
IOMMUFDBackend *iommufd = vbasedev->iommufd;
struct vfio_device_bind_iommufd bind = {
.argsz = sizeof(bind),
Expand All @@ -154,6 +155,15 @@ static bool iommufd_cdev_connect_and_bind(VFIODevice *vbasedev, Error **errp)

/* Bind device to iommufd */
bind.iommufd = iommufd->fd;

/*
* Pass the VF token when binding a PCI device.
*/
if (!vbasedev->mdev && vdev && !qemu_uuid_is_null(&vdev->vf_token)) {
bind.flags |= VFIO_DEVICE_BIND_FLAG_TOKEN;
bind.token_uuid_ptr = (uintptr_t)&vdev->vf_token;
}

if (ioctl(vbasedev->fd, VFIO_DEVICE_BIND_IOMMUFD, &bind)) {
error_setg_errno(errp, errno, "error bind device fd=%d to iommufd=%d",
vbasedev->fd, bind.iommufd);
Expand Down