On Mon, Dec 02, 2019 at 09:24:31AM -0800, Frank Yang wrote:
> Interesting; what's the use case for this?

Mostly reduce data copying.

> Do we already have a mechanism
> to import memory to virtio-gpu via importing a bo handle from somewhere
> else?

Inside the guest?  Import is not working yet, that needs another update
(blob resources) due to current virtio-gpu resources requiring a format
at creation time and dmabufs not having one.

See https://www.kraxel.org/blog/2019/11/virtio-gpu-status-and-plans/ for
some background.

Exporting virtio-gpu resources works in the drm-misc-next branch, should
land in mainline this merge window (i.e. 5.5-rc1).


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