On Wed, Feb 05, 2014 at 10:18:44AM -0800, Volkin, Bradley D wrote: > On Wed, Feb 05, 2014 at 02:28:29AM -0800, Chris Wilson wrote: > > On Tue, Nov 26, 2013 at 08:51:17AM -0800, bradley.d.volkin@xxxxxxxxx wrote: > > > From: Brad Volkin <bradley.d.volkin@xxxxxxxxx> > > > > > > Certain OpenGL features (e.g. transform feedback, performance monitoring) > > > require userspace code to submit batches containing commands such as > > > MI_LOAD_REGISTER_IMM to access various registers. Unfortunately, some > > > generations of the hardware will noop these commands in "unsecure" batches > > > (which includes all userspace batches submitted via i915) even though the > > > commands may be safe and represent the intended programming model of the device. > > > > > > This series introduces a software command parser similar in operation to the > > > command parsing done in hardware for unsecure batches. However, the software > > > parser allows some operations that would be noop'd by hardware, if the parser > > > determines the operation is safe, and submits the batch as "secure" to prevent > > > hardware parsing. Currently the series implements this on IVB and HSW. > > > > Just one more question... Do you have a branch for people to test? > > Not at the moment. And as mentioned in the v2 cover letter, it's actually not > particularly testable (or mergeable for that matter) right now because of a > regression in secure dispatch on nightly. At this moment, I just want to be sure that the fixed dispatch overhead has been minimised. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
