Re: Re: [virtio-comment] About adding a new device type virtio-nvme

[Stefan Hajnoczi <stefanha@redhat.com>]

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On Wed, Jan 18, 2023 at 10:15:12AM +0800, 侯英乐 wrote:
> On Tue, 17 Jan 2023 10:34:09 -0500, Stefan wrote:
> >On Tue, Jan 17, 2023 at 05:41:57PM +0800, 侯英乐 wrote:
> >> On Tue, 17 Jan 2023 09:32:05 +0100，David wrote：
> >> >On 17.01.23 03:04, 侯英乐 wrote:
> >The two diagrams are quite similar. Did you want to highlight a
> 
> >difference between the two approaches in the diagram?
> 
> The biggest difference is the VFIO and vDPA frameworks. The vDPA (virtio data path acceleration) kernel framework
> is a pillar in productizing the end-to-end vDPA solution and it enables NIC vendors to integrate their vDPA NIC kernel 
> drivers into the framework as part of their productization efforts. 
> Detailed information reference：https://www.redhat.com/en/blog/introduction-vdpa-kernel-framework

For the sake of the argument, let's assume VFIO can't be used in your
situation so vDPA is required. The part I don't understand is which
specific NVMe features you need that virtio-blk lacks?

Stefan

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