| Message ID | 20190227170608.27963-24-steven.price@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Convert x86 & arm64 to use generic page walk | expand |
On Wed, Feb 27, 2019 at 9:07 AM Steven Price <steven.price@arm.com> 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 xtensa, we don't support large pages, so add a stub returning 0. > > CC: Chris Zankel <chris@zankel.net> > CC: Max Filippov <jcmvbkbc@gmail.com> > CC: linux-xtensa@linux-xtensa.org > Signed-off-by: Steven Price <steven.price@arm.com> > --- > arch/xtensa/include/asm/pgtable.h | 1 + > 1 file changed, 1 insertion(+) Acked-by: Max Filippov <jcmvbkbc@gmail.com>
diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h index 29cfe421cf41..60c3e86b9782 100644 --- a/arch/xtensa/include/asm/pgtable.h +++ b/arch/xtensa/include/asm/pgtable.h @@ -266,6 +266,7 @@ static inline void pgtable_cache_init(void) { } #define pmd_none(pmd) (!pmd_val(pmd)) #define pmd_present(pmd) (pmd_val(pmd) & PAGE_MASK) #define pmd_bad(pmd) (pmd_val(pmd) & ~PAGE_MASK) +#define pmd_large(pmd) (0) #define pmd_clear(pmdp) do { set_pmd(pmdp, __pmd(0)); } while (0) static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITABLE; }
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 xtensa, we don't support large pages, so add a stub returning 0. CC: Chris Zankel <chris@zankel.net> CC: Max Filippov <jcmvbkbc@gmail.com> CC: linux-xtensa@linux-xtensa.org Signed-off-by: Steven Price <steven.price@arm.com> --- arch/xtensa/include/asm/pgtable.h | 1 + 1 file changed, 1 insertion(+)