On Thu, Aug 22, 2013 at 07:23:13PM +0300, ville.syrjala@xxxxxxxxxxxxxxx wrote: > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > All the different context sizes reported in the CXT_SIZE register > aren't meant to be simply added together. > > While BSpec is somewhat unclear on the topic of the actual context > size, empirical tests have now revealed the truth. So let's add a > big fat comment to remind people how it all works. By the way. I've done some digging. I believe (75% certain) pre-HSW, every context save writes the entire data. So if you wanted to set some pattern and see what HW actually overwrites, it should be doable. HSW+ though we can't do that. [snip] -- Ben Widawsky, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
