Re: [PATCH] - Mapping ACPI tables as CACHED

From: H. Peter Anvin
Date: Tue Dec 14 2010 - 23:17:49 EST


On 12/14/2010 06:27 PM, Jack Steiner wrote:
> On Tue, Dec 14, 2010 at 02:58:42PM -0800, H. Peter Anvin wrote:
>> On 12/14/2010 02:09 PM, Jack Steiner wrote:
>>> Map ACPI tables as WB on x86_64. No substantive changes to IA64.
>>
>> Why just x86-64?
>
> We never observed a performance problem on IA64. Not sure if it maps
> ACPI space as WB or not. Since I did not have easy access to
> an ia64, I chose not to make any changes to the way it maps
> the table.
>

You're missing the point: x86-64 as opposed to x86 in general.

-hpa

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

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