[dpdk-dev] [PATCH v2 7/7] virtio: add 1.0 support

[Xie, Huawei]

On 1/14/2016 3:49 PM, Yuanhan Liu wrote:
> On Thu, Jan 14, 2016 at 07:47:17AM +0000, Xie, Huawei wrote:
>> 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.
> Virtio 1.0 supports three transport layer, including MMIO and PCI. And
> we use PCI only in our pmd driver.

I don't mean that MMIO but use memory mapped IO for configuration.

>
> 	--yliu
>