@@ -33,16 +33,23 @@
#include <linux/log2.h>
static inline void
-pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
+pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
{
- pmd_set(pmd, pte);
+ /*
+ * The cast to long below is OK even when pte is long long (PAE40)
+ * Despite "wider" pte, the pte table needs to be in non-PAE low memory
+ * as all higher levels can only hold long pointers.
+ *
+ * The cast itself is needed given simplistic definition of set_pmd()
+ */
+ set_pmd(pmdp, __pmd((unsigned long)ptep));
}
-static inline void
-pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t ptep)
-{
- pmd_set(pmd, (pte_t *) ptep);
-}
+/*
+ * pmd_populate can be implemented in terms of pmd_populate_kernel since
+ * pgtable_t is pte * on ARC
+ */
+#define pmd_populate(mm, pmdp, ptep) pmd_populate_kernel(mm, pmdp, ptep)
static inline int __get_order_pgd(void)
{
@@ -222,12 +222,6 @@ extern char empty_zero_page[PAGE_SIZE];
/* find the logical addr (phy for ARC) of the Page Tbl ref by PMD entry */
#define pmd_page_vaddr(pmd) (pmd_val(pmd) & PAGE_MASK)
-/* In a 2 level sys, setup the PGD entry with PTE value */
-static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
-{
- pmd_val(*pmdp) = (unsigned long)ptep;
-}
-
#define pte_none(x) (!pte_val(x))
#define pte_present(x) (pte_val(x) & _PAGE_PRESENT)
#define pte_clear(mm, addr, ptep) set_pte_at(mm, addr, ptep, __pte(0))
Signed-off-by: Vineet Gupta <vgupta@kernel.org> --- arch/arc/include/asm/pgalloc.h | 21 ++++++++++++++------- arch/arc/include/asm/pgtable.h | 6 ------ 2 files changed, 14 insertions(+), 13 deletions(-)