The basic idea stayed the same since the last version of those patches. The exporter can provide explicit pin/unpin functions and the importer a move_notify callback. This allows us to avoid pinning buffers while importers have a mapping for them.
In difference to the last version the locking changes were separated from this patchset and committed to drm-misc-next. This allows drivers to implement the new locking semantics without the extra unpinned handling, but of course the changed locking semantics is still a prerequisite to the unpinned handling. The last time this set was send out the discussion ended by questioning if the move_notify callback was really the right approach of notifying the importers that a buffer is about to change its placement. A possible alternative would be to add a special crafted fence object instead. Let's discuss on the different approaches once more, Christian. _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
