[Bug 94678] [SKL] gem_evict_alignment at minor-hang crashes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94678

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
[   71.803972] [drm:intel_guc_ucode_load] GuC fw status: fetch SUCCESS, load
SUCCESS
[   71.803975] [drm:intel_guc_ucode_load] GuC fw fetch status SUCCESS
[   71.910647] [drm:guc_ucode_xfer_dma] DMA status 0x10, GuC status 0x40000026
[   71.910649] [drm:guc_ucode_xfer_dma] returning -110
[   71.910744] [drm:i915_gem_init_hw [i915]] *ERROR* Failed to initialize GuC,
error -110 (ignored)
... a few more hangs ...
[   99.781162] [drm:intel_guc_ucode_load] GuC fw status: fetch SUCCESS, load
FAIL
[   99.781190] [drm:i915_gem_init_hw [i915]] *ERROR* Failed to initialize GuC,
error -8 (ignored)
[   99.781811] ------------[ cut here ]------------
[   99.781831] WARNING: CPU: 1 PID: 64 at
/home/kernel/COD/linux/drivers/gpu/drm/i915/intel_lrc.c:702
intel_logical_ring_begin+0x1ab/0x250 [i915]()
[   99.781832] WARN_ON(&target->list == &ring->request_list)

The ENOSPC should be fixed in 4.5.

Not sure about the timeout for guc_ucode_xfer_dma() and then persistent
failure. That looks eerily like some patches I've just seen on the ml.

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