PAE on i686 by default in TH

Patryk Zawadzki patrys at
Tue Feb 10 15:59:11 CET 2009

On Tue, Feb 10, 2009 at 3:37 PM, Bartosz Świątek <shadzik at> wrote:
> 2009/2/10 Patryk Zawadzki <patrys at>:
>> On Tue, Feb 10, 2009 at 2:23 PM, Patryk Zawadzki <patrys at> wrote:
>>> Fedora 11 has declared they only supply an i686 kernel in PAE mode.
>>> I'd like to propose the same for PLD Th.
>>> Rationale:
>>> * only very old hardware like first Pentium M chips does not support hardware
> Sorry, can't follow. Only Pentium M does not support Pentium M?
> Or did you mean that only Pentium M chips do not support EMT64?

Obvious misclick. First Pentium M did not support PAE.

> I have an not too old macbook (>2 years old, macbook 1,1) with an
> Intel Core Duo that doesn't support EMT64. So an PAE kernel is out of
> question, not an option for me.

AFAIR EMT64T is needed to run quasi-64-bit code. PAE works by
remapping memory windows to frames below the 4GB limit while EMT64
adds longer registers with full addressing. Correct me if I'm wrong as
I'm no chip expert.

Patryk Zawadzki

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