Jesse Barnes <jesse.barnes@intel.com> writes:
>
> To do this in a nicer way (and be less vulnerable to similar BIOS
> funkiness) the kernel really needs full PAT support. That should allow
> WC over WB and WC over UC mappings to occur, at least if I'm
> remembering the docs right...
PAT only really helps for device driver performance optimizations.
But if the basic WB MTRRs are wrong PAT cannot really salvage it.
-Andi
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