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SubjectRe: [virtio-dev] [PATCH 2/2] drm/virtio: add iommu support.
> >> Once display manger is kicked off for example (sudo systemctl start lightdm.service) and
> >> resource id 3 gets created from user space down, it still gives a blank black screen.
> >
> > Hmm. I'd suspect there is simply a code path missing. Can you send the
> > patch you have?
> >
> > cheers,
> > Gerd
> >
> I sent the patch. For now it does dma_sync_sg on the pages in
> TRANSFER_TO_HOST_2D/3D when use_dma_api is true.

Hmm, the way it is hooked up it should not miss any resource update.
So not sure why it isn't working.
Pushed the patch nevertheless as it is clearly a step into the right


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