[Bug 102973] [CI][HSW] igt at drv_selftest@live_hangcheck - SW HANG - Incomplete

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102973

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

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

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 87dc03ad268f285065cdd2e2ac75701a1f04d0b8
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Sep 15 14:09:29 2017 +0100

    drm/i915/selftests: Try to recover from a wedged GPU during reset tests

    If we see the seqno stop progressing, we abandon the test for fear that
    the GPU died following the reset. However, during test teardown we still
    wait for the GPU to idle before continuing, but we have already
    confirmed that the GPU is dead. Furthermore, since we are inside a reset
    test, we have disabled the hangchecker, and so there is no safety net and
    we wait indefinitely. Detect the stuck GPU and declare it wedged as a
    state of emergency so we can escape.

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Jari Tahvanainen <jari.tahvanainen at intel.com>
    Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20170915130929.18892-1-chris@chris-wilson.co.uk
    Tested-by: Jari Tahvanainen <jari.tahvanainen at intel.com>
    Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>

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