[Bug 103124] [BAT] igt at kms_flip@basic-flip-vs-dpms - dmesg-warn - *ERROR* Atomic update failure on pipe A

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103124

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

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

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 69208c9e1e938cd115fdafdc502b5a7aa99d8d0b
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Tue Oct 10 11:18:16 2017 +0200

    drm/i915: Increase atomic update vblank evasion time with lockdep

    All our mmio writes take forever with lockdep due to the constant
    lock acquire&dropping we do. Ville has some patches to only acquire
    the mmio spinlocks once instead for every single mmio, but those
    aren't ready yet.

    As an interim solution just extend our budget slightly when lockdep is
    enabled, to avoid the rare and sporadic noise in CI.

    v2: I forgot to add the FIXME comment ...

    Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
    Acked-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
    References: https://bugs.freedesktop.org/show_bug.cgi?id=103169
    References: https://bugs.freedesktop.org/show_bug.cgi?id=103124
    References: https://bugs.freedesktop.org/show_bug.cgi?id=102403
    References: https://bugs.freedesktop.org/show_bug.cgi?id=103020
    References: https://bugs.freedesktop.org/show_bug.cgi?id=103019
    References: https://bugs.freedesktop.org/show_bug.cgi?id=102723
    References: https://bugs.freedesktop.org/show_bug.cgi?id=102544
    References: https://bugs.freedesktop.org/show_bug.cgi?id=103180
    Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20171010091816.26898-1-daniel.vetter@ffwll.ch

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