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Subject: Re: [virtio-dev] [PATCH 2/2] drm/virtio: add iommu support.
Hi, > > Just pass it down, the call sites all know it (see patch just sent). > > Tested that patch you sent. Together with this patch it also resolves > the virtio gpu graphical display issue for SEV guest. Cool. Can you ack or review the patch so I can commit it? > Is there a way to optimize the dma_sync_sg to only sync on the pages > being updated instead of all the pages in the obj sgl list every time? Well, the rectangle is passed to virtio_gpu_cmd_transfer_to_host_2d, so it should be possible to figure which pages are affected and trim the scatter list accordingly. cheers, Gerd
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