| Message ID | 20190227170608.27963-7-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 05:05:40PM +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 csky, we don't support large pages, so add a stub returning 0. > > CC: Guo Ren <guoren@kernel.org> > Signed-off-by: Steven Price <steven.price@arm.com> > --- > arch/csky/include/asm/pgtable.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/csky/include/asm/pgtable.h b/arch/csky/include/asm/pgtable.h > index edfcbb25fd9f..4ffdb6bfbede 100644 > --- a/arch/csky/include/asm/pgtable.h > +++ b/arch/csky/include/asm/pgtable.h > @@ -158,6 +158,8 @@ static inline int pmd_present(pmd_t pmd) > return (pmd_val(pmd) != __pa(invalid_pte_table)); > } > > +#define pmd_large(pmd) (0) Nit: here and in other places, parentheses around 0 is not needed.
diff --git a/arch/csky/include/asm/pgtable.h b/arch/csky/include/asm/pgtable.h index edfcbb25fd9f..4ffdb6bfbede 100644 --- a/arch/csky/include/asm/pgtable.h +++ b/arch/csky/include/asm/pgtable.h @@ -158,6 +158,8 @@ static inline int pmd_present(pmd_t pmd) return (pmd_val(pmd) != __pa(invalid_pte_table)); } +#define pmd_large(pmd) (0) + static inline void pmd_clear(pmd_t *p) { pmd_val(*p) = (__pa(invalid_pte_table));
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 csky, we don't support large pages, so add a stub returning 0. CC: Guo Ren <guoren@kernel.org> Signed-off-by: Steven Price <steven.price@arm.com> --- arch/csky/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+)