On Thu, 30 Jan 2020 at 18:17, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: > > On Braswell and Broxton (also known as Valleyview and Apollolake), we > need to serialise updates of the GGTT using the big stop_machine() > hammer. This has the side effect of appearing to lockdep as a possible > reclaim (since it uses the cpuhp mutex and that is tainted by per-cpu > allocations). However, we want to use vm->mutex (including ggtt->mutex) > from within the shrinker and so must avoid such possible taints. For this > purpose, we introduced the asynchronous vma binding and we can apply it > to the PIN_GLOBAL so long as take care to add the necessary waits for > the worker afterwards. > > Closes: https://gitlab.freedesktop.org/drm/intel/issues/211 > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx> _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
