On Tue, Apr 12, 2016 at 04:56:52PM +0100, Tvrtko Ursulin wrote: > From: Tvrtko Ursulin <tvrtko.ursu...@intel.com> > > Similarly to i915_gem_object_pin_map on LLC platforms, we can > use the new VMA based io mapping on !LLC to decrease the cost > of ringbuf pinning and unpinning.
If you are going to mention pin_map, you open up the discussion that we can avoid the mappable apertures requirement on !llc if we use pin_map with a pgprot_writecombine. That's my preferred solution, caching the ioremap is just a stopgap, or fallback for when we can't use direct CPU access. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
