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