[Bug 94585] [BXT-P/KBL/BSW] igt/gem_reset_stats / some ban subtests fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94585

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #7 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit e075a32f515becef66dc849f5eca47409ccf5473
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri May 13 11:57:22 2016 +0100

    drm/i915: Stop automatically retiring requests after a GPU hang

    Following a GPU hang, we break out of the request loop in order to
    unlock the struct_mutex for use by the GPU reset. However, if we retire
    all the requests at that moment, we cannot identify the guilty request
    after performing the reset.

    v2: Not automatically retiring requests forces us to recheck for
    available ringspace.

    Fixes: f4457ae71fd6 ("drm/i915: Prevent leaking of -EIO from
i915_wait_request()")
    Testcase: igt/gem_reset_stats/ban-*
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
    Cc: Mika Kuoppala <mika.kuoppala at intel.com>
    Tested-by: Mika Kuoppala <mika.kuoppala at intel.com>
    Reviewed-by: Mika Kuoppala <mika.kuoppala at intel.com>
    Link:
http://patchwork.freedesktop.org/patch/msgid/1463137042-9669-4-git-send-email-chris@chris-wilson.co.uk

and

commit e380239dc838f1e8a2ebcc9ddac556e3842ea195
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri May 13 10:30:05 2016 +0100

    igt/gem_reset_stats: Fix pending batch count for bans

    Since 9ba9af2ea4 ("lib: Skip execution in gem_has_ring()"), we no longer
    do a double execbuf for each hang, as the gem_require_ring() check now
    does a dummy execution that does not contribuee to the pending batch
    count.

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

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