On Fri, 27 May 2011 14:37:45 -0700, "Segovia, Benjamin" <benjamin.sego...@intel.com> wrote: > Hello gurus, > > I have two question mostly regarding libdrm_intel > > 1/ What is the difference between drm_intel_bo_map and > drm_intel_gem_bo_map_gtt ? bo_map uses the CPU domain, and so is CPU linear (needs sw detiling). bo_gtt_map uses the uncached [WC] GTT domain, and so is GPU linear (detiling is performed by the hardware using a fence).
> 2/ Will it be possible (or is it already possible) to directly share a > regularly allocated piece of physical memory? Typical use case is the > following one using OpenCL API: Yes. I've proposed a vmap interface to bind user-pages into the GTT, similar to a completely unused bit of TTM functionality. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel
