iommu_map_sg
ret = iommu_map_sg(domain, iova, sg, nents, prot, GFP_ATOMIC);
ret = iommu_map_sg(domain, iova, sgt->sgl, sgt->orig_nents, ioprot,
EXPORT_SYMBOL_GPL(iommu_map_sg);
return iommu_map_sg(domain, iova, sgt->sgl, sgt->orig_nents, prot,
extern ssize_t iommu_map_sg(struct iommu_domain *domain, unsigned long iova,