2016-01-19 16:12, Yuanhan Liu:
> int
> vtpci_init(struct rte_pci_device *dev, struct virtio_hw *hw)
> {
> - hw->vtpci_ops = &legacy_ops;
> + hw->dev = dev;
> +
> + /*
> + * Try if we can succeed reading virtio pci caps, which exists
> + * only on modern pci device. If failed, we fallback to legacy
> + * virtio handling.
> + */
> + if (virtio_read_caps(dev, hw) == 0) {
> + PMD_INIT_LOG(INFO, "modern virtio pci detected.");
> + hw->vtpci_ops = &modern_ops;
> + hw->modern = 1;
> + dev->driver->drv_flags |= RTE_PCI_DRV_INTR_LSC;
> + return 0;
> + }
RTE_PCI_DRV_INTR_LSC is already set by virtio_resource_init_by_uio().
Do you mean interrupt was not supported with legacy virtio?
