Re: [PATCH 4/5] x86, mm: Add set_memory_wt() for WT

[Yigal Korman]

I think that what confused Andy (or at least me) is the documentation in Documentation/x86/pat.txt
If it's possible, can you please update pat.txt as part of the patch?

Thank you,
Yigal

On 04/09/2014 21:57, Toshi Kani wrote:
> On Thu, 2014-09-04 at 11:57 -0700, Andy Lutomirski wrote:
>> On Thu, Sep 4, 2014 at 11:35 AM, Toshi Kani <toshi.kani@xxxxxx> wrote:
>>> This patch adds set_memory_wt(), set_memory_array_wt(), and
>>> set_pages_array_wt() for setting range(s) of memory to WT.
>>>
>> Possibly dumb question: I thought that set_memory_xyz was only for
>> RAM.  Is that incorrect?
> It works for non-RAM ranges as well.  For instance, you can use
> set_memory_xyz() to change cache attribute for a non-RAM range mapped by
> ioremap_cache().
>
> Thanks,
> -Toshi
>
>
>
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