PVSCSI_MAX_NUM_PAGES_REQ_RING
sc->req_ring_num_pages = PVSCSI_MAX_NUM_PAGES_REQ_RING;
} else if (sc->req_ring_num_pages > PVSCSI_MAX_NUM_PAGES_REQ_RING) {
sc->req_ring_num_pages = PVSCSI_MAX_NUM_PAGES_REQ_RING;
uint64_t req_ring_ppn[PVSCSI_MAX_NUM_PAGES_REQ_RING];
(PVSCSI_MAX_NUM_PAGES_REQ_RING * PVSCSI_MAX_NUM_REQ_ENTRIES_PER_PAGE)