[Intel-gfx] [PATCH] i965: Always try to create a logical context

[Kenneth Graunke]

On Monday, November 20, 2017 1:29:42 AM PST Chris Wilson wrote:
> Always enable use of HW logical contexts to preserve GPU state between
> batches when the kernel supports such constructs, continuing to enforce
> the required support for gen6+.
> 
> At runtime, this effectively removes the BRW_NEW_CONTEXT flag (and the
> upload of invariant state) from the start of every batch for any kernel
> supporting contexts. So long as the older atoms are correctly listening
> to the right flag (NEW_CONTEXT rather than NEW_BATCH) this should
> eliminate a few redundant state uploads for the older platforms.
> 
> Cc: Jason Ekstrand <jason.ekstrand at intel.com>
> Cc: Kenneth Graunke <kenneth at whitecape.org>

Nice, I saw Ironlake RC6 go by and was wondering if contexts were up
next :)

It makes sense to use them if the kernel supports them.

Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
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