Re: [PATCH] ACPI: use ioremap_cache()
From: H. Peter Anvin
Date: Tue Dec 28 2010 - 15:12:30 EST
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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