On 01/03/2019 21:48, Kirill A. Shutemov wrote: > On Wed, Feb 27, 2019 at 05:05:39PM +0000, Steven Price wrote: >> walk_page_range() is going to be allowed to walk page tables other than >> those of user space. For this it needs to know when it has reached a >> 'leaf' entry in the page tables. This information is provided by the >> p?d_large() functions/macros. >> >> For c6x there's no MMU so there's never a large page, so just add stubs. > > Other option would be to provide the stubs via generic headers form !MMU. > I agree that could be done, but equally the definitions of p?d_present/p?d_none/p?d_bad etc could be provided by a generic header for !MMU but currently are not. It makes sense to keep the p?d_large definitions next to the others. I'd prefer to stick with a (relatively) small change here - it's already quite a long series! But this is certainly something that could be tidied up for !MMU archs. Steve
