{
/* Caller must be a probed driver on dev */
struct iommu_group *group = dev->iommu_group;
+ struct group_device *device;
void *curr;
int ret;
if (!group)
return -ENODEV;
- if (!dev_has_iommu(dev) || dev_iommu_ops(dev) != domain->owner)
+ if (!dev_has_iommu(dev) || dev_iommu_ops(dev) != domain->owner ||
+ pasid == IOMMU_NO_PASID)
return -EINVAL;
mutex_lock(&group->mutex);
+ for_each_group_device(group, device) {
+ if (pasid >= device->dev->iommu->max_pasids) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+ }
+
curr = xa_cmpxchg(&group->pasid_array, pasid, NULL, domain, GFP_KERNEL);
if (curr) {
ret = xa_err(curr) ? : -EBUSY;