[Bug 103260] [CI] igt at gem_eio@in-flight-suspend - dmesg-warn - WARNING: CPU: 4 PID: 1503 at drivers/gpu/drm/i915/intel_ringbuffer.c | incomplete

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103260

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

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

--- Comment #5 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 5896a5c8c9c01b09af05b02cdb2ae275ef143959
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Oct 13 14:12:18 2017 +0100

    drm/i915: Always stop the rings before a missing GPU reset

    Always try to stop the rings, even if the GPU reset itself has been
    disabled (via modparam i915.reset). This should at least stop the hw
    from spinning in the background consuming resources (e.g. power and
    memory bandwidth) letting the system rest-in-peace.

    References: https://bugs.freedesktop.org/show_bug.cgi?id=103260
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Mika Kuoppala <mika.kuoppala at intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20171013131218.18013-2-chris@chris-wilson.co.uk
    Reviewed-by: Mika Kuoppala <mika.kuoppala at intel.com>

commit 7836cd02f27c03af2fca04b450177c51fc7caf1e
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Oct 13 14:12:17 2017 +0100

    drm/i915: Keep the rings stopped until they have been re-initialized

    Before modifying the ring register (RING_START, HEAD, TAIL, CTL) we
    first make sure it is stopped (or else the hw may not resample the
    registers). However, we do not need to let the hw restart until after we
    have reprogrammed all the rings. This should help prevent situations
    where pending operations on the ring may resume (because we are trying
    to re-initialize following an unsuccessful GPU hang, i.e. from
    i915_gem_unset_wedged).

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103260
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Mika Kuoppala <mika.kuoppala at intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20171013131218.18013-1-chris@chris-wilson.co.uk
    Reviewed-by: Mika Kuoppala <mika.kuoppala at intel.com>

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