[Bug 90091] [BDW] GPU HANG: ecode 8:0:0x85dffffb, in Xorg [937], reason: Ring hung, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90091

--- Comment #2 from Mika Kuoppala <mika.kuoppala at intel.com> ---
ERROR: 0x00000008
    Invalid physical address in ROSTRM interface (PAVP)

0x1e0a18b0:      0x7a000004: PIPE_CONTROL: no write, no depth stall, no RC
write flush, no inst flush
0x1e0a18b4:      0x00101002:    destination address
0x1e0a18b8:      0x00000000:    immediate dword low
0x1e0a18bc:      0x00000000:    immediate dword high
0x1e0a18c8:      0x784d0000: 3D UNKNOWN: 3d_965 opcode = 0x784d
0x1e0a18cc:      0x71946400: 3D UNKNOWN: 3d_965 opcode = 0x7194
0x1e0a18d0:      0x78240000: 3D UNKNOWN: 3d_965 opcode = 0x7824
0x1e0a18d4:      0x00007ec1: MI_NOOP

Head pointing to 0x1e0a18c8.

Looks like PIPE_CONTROL is structured for gen < 8. That would mean DDX is not
recent enough.

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