[PATCH v8 08/20] sparc: mm: Add p?d_large() definitions

Steven Price
2019-04-03T14:17:47Z

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 sparc 64 bit, pmd_large() and pud_large() are already provided, so
add #defines to prevent the generic versions (added in a later patch)
from being used.

CC: "David S. Miller" <davem@davemloft.net>
CC: sparclinux@vger.kernel.org
Signed-off-by: Steven Price <steven.price@arm.com>
Acked-by: David S. Miller <davem@davemloft.net>
---
arch/sparc/include/asm/pgtable_64.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 1393a8ac596b..f502e937c8fe 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -713,6 +713,7 @@ static inline unsigned long pte_special(pte_t pte)
return pte_val(pte) & _PAGE_SPECIAL;
}

+#define pmd_large pmd_large
static inline unsigned long pmd_large(pmd_t pmd)
{
pte_t pte = __pte(pmd_val(pmd));
@@ -894,6 +895,7 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
#define pgd_present(pgd) (pgd_val(pgd) != 0U)
#define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0UL)

+#define pud_large pud_large
static inline unsigned long pud_large(pud_t pud)
{
pte_t pte = __pte(pud_val(pud));
--
2.20.1