Re: [PATCH] ACPI: use ioremap_cache()

[H. Peter Anvin]

On 12/27/2010 09:02 PM, Shaohua Li wrote:
>>
>> For x86, that is handled by the MTRRs; 
> does it cause any problem if the pat and mtrr doesn't match?
> 

No, the interaction rules between PAT and MTRR are well-defined; see the
SDM 3A.  If they weren't we would have huge problems with SMM.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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