Hi Steven,
On Wed, Mar 06, 2019 at 03:50:15PM +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 mips, we only support large pages on 64 bit.
>
> For 64 bit if _PAGE_HUGE is defined we can simply look for it. When not
> defined we can be confident that there are no large pages in existence
> and fall back on the generic implementation (added in a later patch)
> which returns 0.
>
> CC: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
> CC: Paul Burton <paul.burton@xxxxxxxx>
> CC: James Hogan <jhogan@xxxxxxxxxx>
> CC: linux-mips@xxxxxxxxxxxxxxx
> Signed-off-by: Steven Price <steven.price@xxxxxxx>
Acked-by: Paul Burton <paul.burton@xxxxxxxx>
Thanks,
Paul
