dvma_unbind_req_t
iommu_p->iommu_mtlb_req_p = (dvma_unbind_req_t *)
kmem_zalloc(sizeof (dvma_unbind_req_t) *
sizeof (dvma_unbind_req_t) * (tm_mtlb_maxpgs + 1));
dvma_unbind_req_t *req_p, *req_max_p;
dvma_unbind_req_t *req_base_p = iommu_p->iommu_mtlb_req_p;
dvma_unbind_req_t *iommu_mtlb_req_p; /* unbind requests */