[Bug 87729] [BSW PPGTT Bisected]igt/gem_ctx_thrash causes OOM killer

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87729

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|intel-gfx-bugs at lists.freede |michel.thierry at intel.com
                   |sktop.org                   |
            Summary|[BSW                        |[BSW PPGTT
                   |Regression]igt/gem_ctx_thra |Bisected]igt/gem_ctx_thrash
                   |sh causes OOM killer        |causes OOM killer

--- Comment #1 from lu hua <huax.lu at intel.com> ---
2f82bbdf3d4f1361c3d713c516d8aa390102374d is the first bad commit
commit 2f82bbdf3d4f1361c3d713c516d8aa390102374d
Author:     Michel Thierry <michel.thierry at intel.com>
AuthorDate: Mon Dec 15 14:58:00 2014 +0000
Commit:     Daniel Vetter <daniel.vetter at ffwll.ch>
CommitDate: Tue Dec 16 10:39:12 2014 +0100

    drm/i915: Use true PPGTT in Gen8+ when execlists are enabled

    In Gen8+, full ppgtt needs execlist, otherwise the ctx switch can hang.

    Also remove the current restriction, a user should be able to explicitly
set
    ppgtt=2.

    Note, this patch considers that execlist support has been enabled by
    default on Gen8.

    v2: Remove non-default restriction and clarify commit message (Daniel)

    Cc: Daniel Vetter <daniel at ffwll.ch>
    Signed-off-by: Michel Thierry <michel.thierry at intel.com>
    [danvet: s/comment/commit message/ in the commit message since that's
    what Michel meant as per our irc discussion.]
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

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