[Bug 107269] [kbl guc] GPU hang after suspend with 4.18.0-041800rc5-generic

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107269

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|GPU hang after suspend with |[kbl guc] GPU hang after
                   |4.18.0-041800rc5-generic    |suspend with
                   |                            |4.18.0-041800rc5-generic

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
That's definitely odd. It loaded the context but didn't update the RING_TAIL:

rcs0 command stream:
  IDLE?: no
  START: 0x00191000
  HEAD:  0x000002a0 [0x000002a8]
  TAIL:  0x000002a0 [0x00000308, 0x00000328]
  CTL:   0x00003000
  MODE:  0x00000200
  HWS:   0xfedcf000
  ACTHD: 0x00000000 000002a0
  IPEIR: 0x00000000
  IPEHR: 0x00000000

Oh guc. Don't do that.

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