On Thu, 23 Dec 2010 08:14:22 -0800, Jesse Barnes <[email protected]> 
wrote:
> I wonder if the PAT code is somehow failing to set up WC pages on
> resume?

Indeed it appears to be.

Tearing down and recreating the gtt_mapping across suspend restores the
expected behaviour.

Now to understand if the x86 pagetable code is actually meant to restore
those flags on resume...
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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