Re: [Qemu-devel] VFIO based vGPU(was Re: [Announcement] 2015-Q3 release of XenGT - a Mediated ...)

[Jike Song]

On 01/20/2016 05:05 PM, Tian, Kevin wrote:
> I would expect we can spell out next level tasks toward above
> direction, upon which Alex can easily judge whether there are
> some common VFIO framework changes that he can help :-)

Hi Alex,

Here is a draft task list after a short discussion w/ Kevin,
would you please have a look?

        Bus Driver

                { in i915/vgt/xxx.c }

                - define a subset of vfio_pci interfaces
                - selective pass-through (say aperture)
                - trap MMIO: interface w/ QEMU

        IOMMU

                { in a new vfio_xxx.c }

                - allocate: struct device & IOMMU group
                - map/unmap functions for vgpu
                - rb-tree to maintain iova/hpa mappings
                - interacts with kvmgt.c


        vgpu instance management

                { in i915 }

                - path, create/destroy


--
Thanks,
Jike