Description: For non-PAT systems, promote PAGE_KERNEL_WC to PAGE_KERNEL_UC_MINUS. PAGE_KERNEL_WC maps to PWT, which translates to uncached if the MTRR is UC or WC. UC_MINUS gets the real intention, of the user, which is WC if the MTRR is WC, UC if you can t do that. .
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iomap_32.c
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