On Fri, Apr 19, 2013 at 11:16:11AM +0300, Jani Nikula wrote: > It seems the error state often contains plenty of zero data [citation > needed]. It's also fairly big. Truncate more than (arbitrarily chosen) > three consecutive zero values: > > 00000000 : 0b640001 > 00000004 : 000047f8 > 00000008 : 00002044 > 0000000c : 00000000 > 00000010 : 00000000 > 00000014 : 00000000 ... > 00000024 : 01000000 > 00000028 : 13000001 > > It could be prettier and more informative, but care must be taken not to > confuse intel_error_decode. I didn't put much effort into either before > getting an ack on the idea. This would be safer if it were only applied to rings and after MI_BATCHBUFFER_END in batches. In the larger 3DSTATE commands, we can indeed end up with large blocks of zeroes and the decoder relies on the correct count to skip instructions. -Chris -- Chris Wilson, Intel Open Source Technology Centre
