Superpages (4 MB pages) support for x86?

[Ryan Stone]

I'm interested in making use of the 4 MB pages options in x86.  Has
anyone done any work on this for FreeBSD?  I know that some work was
done on superpages for the Alpha and AMD64.

 

If there's no prior work on this, I'll be writing it myself.  Does
anybody know if the superpages work would contain anything useful for a
x86 port?

 

Any hints or guidance would be quite welcome.

 

Ryan Stone

Engineering Co-op

Direct: 519-880-2400 ext 2759

www.sandvine.com

 

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[John Baldwin]

On Monday 20 November 2006 10:50, Ryan Stone wrote:

> I'm interested in making use of the 4 MB pages options in x86.  Has
> anyone done any work on this for FreeBSD?  I know that some work was
> done on superpages for the Alpha and AMD64.
>
>  
>
> If there's no prior work on this, I'll be writing it myself.  Does
> anybody know if the superpages work would contain anything useful for a
> x86 port?
>
>  
>
> Any hints or guidance would be quite welcome.

Alan Cox's superpages work also works on i386 I thought.

--
John Baldwin
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[Attilio Rao-2]

2006/11/20, Ryan Stone <rstone@...>:
> I'm interested in making use of the 4 MB pages options in x86.  Has
> anyone done any work on this for FreeBSD?  I know that some work was
> done on superpages for the Alpha and AMD64.
>
>
>
> If there's no prior work on this, I'll be writing it myself.  Does
> anybody know if the superpages work would contain anything useful for a
> x86 port?

It is unclear to me if you want to add superpages support for x86 or
adding support for switching pages granularity 4 KB -> 4MB in
FreeBSD-ia32...

Attilio


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