On Fri, May 13, 2016 at 03:36:35PM +0100, Dave Gordon wrote: > This patch simply changes the default value of "enable_guc_submission" > from 0 (never) to -1 (auto). This means that GuC submission will be > used if the platform has a GuC, the GuC supports the request submission > protocol, and any required GuC firmwware was successfully loaded. If any > of these conditions are not met, the driver will fall back to using > execlist mode. Why? This is the commit that people will bisect to, it should explain why guc is preferred. At the moment, with the exception of reduced context-switch overhead, I don't see any compelling advantage for enabling guc, just lots of disadvantages. Enabing a major feature like this, the commit should tell us the advantages and disadvantages; and future roadmap (but really it should be compelling in and of itself). -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
