On Tue, Nov 29, 2011 at 17:02, Chris Wilson <[email protected]>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: Eugeni Dodonov <[email protected]> -- Eugeni Dodonov <http://eugeni.dodonov.net/>
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