On Sun, 16 Dec 2012 17:51:55 +0000, Chris Wilson <chris at chris-wilson.co.uk> wrote: > Before performing the domain transition for pread/pwrite, and so a locked > completion if still required, wait for any pending rendering locklessly. > This should reduce contention when reading back results from the GPU, for > example. Meh, the pwrite side messes around with the ret=-EFAULT and so screws up the shmem_write patch. -Chris > -- Chris Wilson, Intel Open Source Technology Centre