[PATCH v4 06/19] s390: mm: Add p?d_large() definitions

From: Steven Price
Date: Wed Mar 06 2019 - 10:51:16 EST

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 s390, pud_large() and pmd_large() are already implemented as static
inline functions. Add a #define so we don't pick up the generic version
introduced in a later patch.

CC: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
CC: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
CC: linux-s390@xxxxxxxxxxxxxxx
Signed-off-by: Steven Price <steven.price@xxxxxxx>
arch/s390/include/asm/pgtable.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 063732414dfb..1f188004ba95 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -679,6 +679,7 @@ static inline int pud_none(pud_t pud)
return pud_val(pud) == _REGION3_ENTRY_EMPTY;

+#define pud_large pud_large
static inline int pud_large(pud_t pud)
if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) != _REGION_ENTRY_TYPE_R3)
@@ -696,6 +697,7 @@ static inline unsigned long pud_pfn(pud_t pud)
return (pud_val(pud) & origin_mask) >> PAGE_SHIFT;

+#define pmd_large pmd_large
static inline int pmd_large(pmd_t pmd)
return (pmd_val(pmd) & _SEGMENT_ENTRY_LARGE) != 0;