Re: Crash while mapping memory in pagetable_init() (Was: Re: .config)

["H. Peter Anvin" <hpa@zytor.com>]

Jeremy Fitzhardinge wrote:
> H. Peter Anvin wrote:
> > I suggest, for clarity and to minimize bloat:
>
> I think it would save a page, at most.  But OK.  (Also, if you're
> running !PAE, these pages will actually become part of the init_mm
> pagetable, so there's no memory wastage at all.)

Even with PSE?

However, the main reason I wanted it done that way is to avoid cargo 
cult programming; this makes it much clearer where the numbers actually 
come from.

> > #ifdef CONFIG_X86_PAE
> > # define PAGE_TABLE_SIZE    ((2048+4)*4096)
> > #else
> > # define PAGE_TABLE_SIZE    ((1024+1)*4096)
>
> 1024 should be enough; the pgd is still swapper_pg_dir, and there are no
> pmds.

Check.

	-hpa
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