pci_p2pmem_virt_to_bus
nvmeq->sq_dma_addr = pci_p2pmem_virt_to_bus(pdev,
EXPORT_SYMBOL_GPL(pci_p2pmem_virt_to_bus);
pci_bus_addr_t pci_p2pmem_virt_to_bus(struct pci_dev *pdev, void *addr);