On Tue, Jul 30, 2013 at 03:04:22PM +1000, Dave Airlie wrote: > Hey, > > so I put a patch into intel driver a while ago to avoid doing a bo > flush using map/unmap for output slave device if the kernel has vmap > flushing > > However on reflection I realised this only works for CPU accessing > devices like UDL but doesn't work for GPU accessing devices like > nouveau/radeon, > > Going forward I'm sure we'll eventually get GPU sync via Maarten's > patches but I'm thinking I should revert this change in the intel > driver for now, > so reverse optimus can work properly > > Anyone got any ideas for a better plan going forward, maybe a stop gap > before Maartens patches. I don't think it is possible to w/a this in userspace, so let's blame Daniel^WBen for this mess and cheer on our knight in shining armour. Go Maarten! But we need to be sure there is a similar synchronisation point for CPU access to a foriegn dma-buf. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
