PD_MODE_V2
if (amd_iommu_pgtable == PD_MODE_V2) {
if (amd_iommu_pgtable == PD_MODE_V2) {
amd_iommu_pgtable = PD_MODE_V2;
amd_iommu_pgtable = PD_MODE_V2;
return (pdom && (pdom->pd_mode == PD_MODE_V2));
domain->pd_mode = PD_MODE_V2;