Intel Graphics Get Ready For Linux 3.11 Kernel

While the Linux 3.10 kernel hasn't even been released yet, the Intel Open-Source Technology Center developers working on the Linux graphics stack already have a lot of worthwhile changes heading into the Linux 3.11 kernel.

Since late last month there's already been a number of Intel Linux graphics changes queued up for Linux 3.11, including the stabilizing of Valley View / Bay Trail. Published this morning was the latest batch of Intel driver changes heading into the i915 DRM driver in Linux 3.11.

Per Daniel Vetter's mailing list post, the key changes equate to:

- Haswell IPS support (Paulo Zanoni)
- VECS support on Haswell (Ben Widawsky, Xiang Haihao, ...)
- Haswell watermark fixes (Paulo Zanoni)
- "Make the gun bigger again" multithread fence fix from Chris.
- i915_error_state finnally no longer fails with -ENOMEM! Big thanks to
Mika for tackling this.
- vlv sideband locking fixes from Jani
- Hangcheck prep work for arb_robustness support (Mika&Chris)
- edp vs cpu port confusion clean-up from Imre
- pile of smaller fixes and cleanups all over.

As some decoding to these changes, VECS is important for video with Haswell, IPS is for Intermediate Pixel Storage and can provide power-savings benefits, and all of the other Haswell changes are also worthwhile.