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Am 19.05.2014 12:10, schrieb Maarten Lankhorst: > op 19-05-14 10:27, Christian K?nig schreef: >> Am 19.05.2014 10:00, schrieb Maarten Lankhorst: >> [SNIP] >> The problem here is that the whole approach collides with the way we >> do reset handling from a conceptual point of view. Every IOCTL or >> other call chain into the driver is protected by the read side of

...the interface. > And this is what I'm suggesting here. We have avoided quite hard adding any form of those callbacks in the past and I don't really see a reason why that would have changed. For example see the discussion here: http://lists.freedesktop.org/archives/dri-devel/2012-May/022388.html Jerome and Dave rejected my approach for handling the sub allocator through a callback for exactly the same reason. And that was even for call chains inside the same driver, you're suggesting this for cross driver synchronization. Christian.