iommu_map_pgtbl
pte = iommu_map_pgtbl(domain->pgtbl_obj, idx, flags, sf);
re = iommu_map_pgtbl(dmar->ctx_obj, 0, IOMMU_PGF_NOALLOC, &sf);
ctxp = iommu_map_pgtbl(dmar->ctx_obj, 1 + PCI_RID2BUS(ctx->context.rid),
pte = iommu_map_pgtbl(tbl->pgtbl_obj, idx, IOMMU_PGF_WAITOK, &sf);
pte = iommu_map_pgtbl(domain->pgtbl_obj, idx, flags, sf);
void *iommu_map_pgtbl(struct vm_object *obj, vm_pindex_t idx, int flags,