[Bug 98213] REGRESSION: GPU hangs when enable_fbc=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98213

--- Comment #6 from Greg White <gwhite at kupulau.com> ---
OK, that took a long time, but looks like this is it:

c58b735fc762e891481e92af7124b85cb0a51fce is the first bad commit
commit c58b735fc762e891481e92af7124b85cb0a51fce
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Aug 18 17:16:57 2016 +0100

    drm/i915: Allocate rings from stolen

    If we have stolen available, make use of it for ringbuffer allocation.
    Previously this was restricted to !llc platforms, as writing to stolen
    requires a GGTT mapping - but now that we have partial mappable support,
    the mappable aperture isn't quite so precious so we can use it more
    freely and ringbuffers are a good user for the otherwise wasted stolen.

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
    Link:
http://patchwork.freedesktop.org/patch/msgid/20160818161718.27187-18-chris@chris-wilson.co.uk

:040000 040000 1a77b1ba168a72106a74ae5ad3f28a49f40a88b0
2cf3076da77f4753071dfb926e391166a8532354 M      drivers

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