[PATCH v2 0/3] ast, mgag200: Map console BO while it's being displayed
daniel at ffwll.ch
Thu Sep 5 07:56:17 UTC 2019
On Thu, Sep 5, 2019 at 9:01 AM Gerd Hoffmann <kraxel at redhat.com> wrote:
> > - imo we should fix this by using the io_mapping stuff, that avoids
> > the overhead of repeated pat checks for map/unmap.
> Another idea: IIRC ttm has a move_notify callback. So we could simply
> keep mappings active even when the refcount goes down to zero. Then do
> the actual unmap either in the move_notify or in the destroy callback.
Yeah that should be a really clean solution, and only needs changes in
the vram helpers. Which is nice, more common code!
Software Engineer, Intel Corporation
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