Changing the page attributes

[rohan puri]

On Tue, Jul 10, 2012 at 9:42 PM, Mulyadi Santosa
<mulyadi.santosa at gmail.com>wrote:

> Hi..
>
> On Tue, Jul 10, 2012 at 6:51 PM, Arun KS <getarunks at gmail.com> wrote:
> > Hello Experts,
> >
> > I have a requirement to change __log_buf memory(kernel printk buffer)
> > as non cacheable memory.
> > How can I change the page attributes for changing cache policy to non
> cacheable?
>
> I just can give short clue. I think somehow you must find its PTE
> entry...there, IIRC there is page attribute that can be changed to
> make it uncacheable.
>
> cross check the Intel processor manual for further clarification (if
> it's indeed x86 arch)
>
> --
> regards,
>
> Mulyadi Santosa
> Freelance Linux trainer and consultant
>
> blog: the-hydra.blogspot.com
> training: mulyaditraining.blogspot.com
>
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The __log_buf is a static array. Will it be in cacheable page? And by
cacheable here, I guess we mean entry present in page cache, right?

- Rohan
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