[dpdk-dev] [PATCH v2 7/7] virtio: add 1.0 support
huawei.xie at intel.com
Thu Jan 14 08:51:08 CET 2016
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.
>>> +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.
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