On Tue, Nov 29, 2011 at 07:02:06PM +0000, Chris Wilson wrote:
> As the buffer is not necessarily accessible through the GTT at the time
> of a GPU hang, and capturing some of its contents is far more valuable
> than skipping it, provide a clflushed fallback read path. We still
> prefer to read through the GTT as that is more consistent with the GPU
> access of the same buffer. So example it will demonstrate any errorneous
> tiling or swizzling of the command buffer as seen by the GPU.
>
> This becomes necessary with use of CPU relocations and lazy GTT binding,
> but could potentially happen anyway as a result of a pathological error.
>
> Signed-off-by: Chris Wilson <[email protected]>
> Cc: Daniel Vetter <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
--
Daniel Vetter
Mail: [email protected]
Mobile: +41 (0)79 365 57 48
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