On 1/12/2016 2:58 PM, Yuanhan Liu wrote:
> Modern (v1.0) virtio pci device defines several pci capabilities.
[snip]
> +static void
> +modern_notify_queue(struct virtio_hw *hw __rte_unused, struct virtqueue *vq)
> +{
> +     modern_write16(1, vq->notify_addr);
> +}

Does virtio 1.0 only supports MMIO? MMIO has long VMEXIT latency than
PORT IO.

[snip]

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