On Wed, Feb 5, 2014 at 7:18 PM, Volkin, Bradley D <bradley.d.volkin@xxxxxxxxx> 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. The command parser itself should still work, even with the regression in -nightly. The copying and secure dispatch are obviously fail atm. That still leaves regression testing of current userspace and micro-optimizing the checker itself as possible things to do. Otoh not sure what exactly Chris wanted to test. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
