Re: ✗ Fi.CI.IGT: failure for series starting with [1/2] drm/i915: Prevent a race during I915_GEM_MMAP ioctl with WC set

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Quoting Patchwork (2019-01-07 10:44:01)
> ### IGT changes ###
> 
> #### Possible regressions ####
> 
>   * igt@gem_userptr_blits@readonly-unsync:
>     - shard-apl:          PASS -> TIMEOUT
> 
>   * igt@kms_draw_crc@draw-method-rgb565-mmap-wc-untiled:
>     - shard-apl:          PASS -> FAIL
>     - shard-glk:          PASS -> FAIL
>     - shard-kbl:          PASS -> FAIL

igt_fb doesn't compute a page aligned size, and igt_draw ends up making
a mmap request not rounding up to the page boundary. I wonder if that
hasn't been causing a few flip-flips...
-Chris
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