[PATCH v4 08/19] ARM: LPAE: Introduce the 3-level page table format definitions

On 21 March 2011 12:56, Russell King - ARM Linux [off-list ref] wrote:

On Mon, Mar 21, 2011 at 12:36:55PM +0000, Catalin Marinas wrote:

quoted

Any plans for the nopmd patches? I haven't seen them in -next or on the list.

I dropped them again because of those pesky warnings, so again I'm not
planning to push them this window as I don't wish to be deluged in
people reporting the warnings.

They really need fixing once we know how the LPAE stuff interacts with
the change. ?At the moment I've no idea whether the existing section
support ends up at pgd or pmd level with LPAE.

With LPAE, the section should be at the pmd level (2nd level page
table) as the PGDIR_SHIFT is 30. But if we standardise on using the
pmd in both cases, macros like pmd_val() would expand to the right
level with classic page tables (it goes up to pgd_val).

PMD_SHIFT also gets defined as PGDIR_SHIFT for the classic page
tables. One of my patches in the series converts the existing code to
PMD_SHIFT from PGDIR_SHIFT.

I'm happy to give this a try if you have some existing patches for the
classic page tables (I can even start from scratch but I don't want to
duplicate work).

-- 
Catalin