Re: [PATCH v2 6/7] x86/mm: remove p4d_leaf definition

[Ingo Molnar]

* Baoquan He <bhe@xxxxxxxxxx> wrote:

> > So the above comment should have said '256 TB' pages, unless 
> > there's some naming weirdness I missed.
> 
> Hmm, there could be misunderstanding here. In 5-level paging, PGD is 
> the highest level, P4D is the next level of PGD. You may have 
> reversed their order.

Erm, yes indeed I flipped those two, so the correct table should be:

  - level 0:                 4K pages
  - level 1: 512x    4K =   2MB 'large' pages
  - level 2: 512x   2MB =   1GB 'huge' pages
  - level 3: 512x   1GB = 512GB 'P4D' pages
  - level 4: 512x 512GB = 256TB 'PGD' pages

I'm wondering whether 512GB pages will be called 'terapages'. ;-)

Thanks,

	Ingo