[Bug 83677] [HSW] GPU hang on ctx load

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83677

--- Comment #11 from Simon Farnsworth <simon at farnz.org.uk> ---
I used "git bisect good" for GPU hangs, "git bisect bad" for "it works", and
"git bisect skip" for "compiler says no kernel for you."

Assuming no mistakes, I get:

: sfarnsworth host64  $ git bisect log
git bisect start
# good: [257d90d13794c2eb545ab0d6c708f21e2a0378b6] drm-intel-nightly:
2014y-08m-21d-10h-03m-09s integration manifest
git bisect good 257d90d13794c2eb545ab0d6c708f21e2a0378b6
# bad: [3a5e1e6176fb61735a98f16a80c756b3cc69f125] drm/i915: Convert a couple
more INTEL_INFO-esque macros to be pointer agnostic
git bisect bad 3a5e1e6176fb61735a98f16a80c756b3cc69f125
# skip: [9abf49b9962e1fe5d30ac1cf32e8cc2272d531c4] intel-gtt: Report
stolen_size as 0 when local memory is present
git bisect skip 9abf49b9962e1fe5d30ac1cf32e8cc2272d531c4
# skip: [30b824d88baa6b1a23e189c3c06ecf32e8cf0cbf] drm/i915: Reduce number of
register access during IVB+ interrupt handling
git bisect skip 30b824d88baa6b1a23e189c3c06ecf32e8cf0cbf
# skip: [d33c3d9e218a8c96e6a15cc4b558b2b7780fe134] drm/i915: Check the minimum
pitch for the user framebuffer
git bisect skip d33c3d9e218a8c96e6a15cc4b558b2b7780fe134
# skip: [dfd9d929b9a66d5ed9bfffc0335fc11293451290] drm/i915/sdvo: Fix LVDS
connector status detection
git bisect skip dfd9d929b9a66d5ed9bfffc0335fc11293451290
# bad: [20ae302941850d0b3e00f6cbdc88d2824585f112] drm/i915: Improved w/a for
rps on Baytrail
git bisect bad 20ae302941850d0b3e00f6cbdc88d2824585f112
# good: [555633d6527465a77845a9d705cd2075ccbdeef0] drm/i915: Remove DRI1 ring
accessors and API
git bisect good 555633d6527465a77845a9d705cd2075ccbdeef0
# bad: [01094f706a41793d8708592e1925960370f83e05] drm/i915: Decouple the stuck
pageflip on modeset
git bisect bad 01094f706a41793d8708592e1925960370f83e05
# bad: [03e2e353953fdd6627a0864be0e3c223762bd85c] drm/i915: Prevent recursive
deadlock on releasing a busy userptr
git bisect bad 03e2e353953fdd6627a0864be0e3c223762bd85c
# skip: [6196a504b501a7e3ed6e740913243c2d2d070c21] drm/i915: Renames variables
and functions that act upon intel_engine_cs
git bisect skip 6196a504b501a7e3ed6e740913243c2d2d070c21
# bad: [6fd4781d6c60795ab43180cdc081532054214fe7] drm/i915: s/seqno/request/
tracking inside objects
git bisect bad 6fd4781d6c60795ab43180cdc081532054214fe7
# only skipped commits left to test
# possible first bad commit: [6fd4781d6c60795ab43180cdc081532054214fe7]
drm/i915: s/seqno/request/ tracking inside objects
# possible first bad commit: [6196a504b501a7e3ed6e740913243c2d2d070c21]
drm/i915: Renames variables and functions that act upon intel_engine_cs

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