Re: i386 and PAE: pud_present()

[Dave McCracken]

--On Friday, April 28, 2006 10:27:21 +0200 Andi Kleen <ak@xxxxxxx> wrote:

>> Take a look a little further down the page for the comment.
>> 
>> In i386 + PAE, pud is always present.
> 
> I think his problem is that the PGD is always present too (in
> pgtables-nopud.h) Indeed looks strange.

The PGD is always fully populated on i386 if PAE is enabled.  All three of
the pmd pages are allocated at page table creation time and persist till
the page table is deleted.

Dave McCracken

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