On Wed, Nov 26, 2025 at 09:44:12AM +0200, Zhi Wang wrote: > On Wed, 26 Nov 2025 06:17:25 +1000 > Dave Airlie <[email protected]> wrote: > > > On Tue, 25 Nov 2025 at 19:15, Christian König <[email protected]> > > wrote: > > > > > > On 11/25/25 10:08, Dave Airlie wrote: > > snip > > > So far I haven't heard anything about needing dma-buf interactions at > > that level, and maybe Zhi has more insight into the future there. > > > > For VFIO parts, the vendor VFIO driver relies on the core driver's support > to export the VM's framebuffer to the userspace either as type a) > VFIO_GFX_PLANE_TYPE_REGION, framebuffer as a region or b) > VFIO_GFX_PLANE_TYPE_DMABUF, framebuffer as a dmabuf, which is usually > backed by a GEM object. > > NVIDIA vGPU uses VFIO_GFX_PLANE_TYPE_REGION, so dma-buf interactions > are not required.
Good to know. Also looking at Nouveau, the "core" part of that driver (nvkm) does not use dmabuf, it is only the DRM parts. It is unlikely nova-core will have to deal with dmabufs or gem objects AFAICS. That's a DRM thing. thanks, - Joel
