On Tue, 19 Apr 2011 21:32:01 +0100
Chris Wilson <ch...@chris-wilson.co.uk> wrote:

> Knut Petersen reported a GPU hang when he left x11perf running
> overnight. The error state quite clearly indicates that plane A was
> enabled without being fully setup:
> 
> PGTBL_ER: 0x00000010
>     Display A: Invalid GTT PTE
> Plane [0]:
>   CNTR: c1000000
>   STRIDE: 00000c80
>   SIZE: 03ff04ff
>   POS: 00000000
>   ADDR: 00000000
> 
> [That GTT offset on his system being pinned for the ringbuffer.]
> 
> This is a simple debugging patch to assert that this cannot be so!
> 
> References: https://bugs.freedesktop.org/show_bug.cgi?id=36246
> Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
> Cc: Jesse Barnes <jbar...@virtuousgeek.org>
> ---

I like it.

Reviewed-by: Jesse Barnes <jbar...@virtuousgeek.org>

-- 
Jesse Barnes, Intel Open Source Technology Center
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