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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2016-04-29 23:26:15 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2016-05-11 21:53:49 +1000
commit27209206a60fa6ffc92e8d9886ae32abaad5b442 (patch)
tree782ce073324137d3d9553c2d77da2e570ea43c9c /arch
parent75a9b8a6c2533064a8d5d090ada7bf9e4c4c84c1 (diff)
downloadlinux-27209206a60fa6ffc92e8d9886ae32abaad5b442.tar.gz
powerpc/mm: Revert changes made to nohash pgalloc-64.h
This reverts pgalloc related changes WRT implementing 4-level page table for 64K Linux page size and storing of physical address in higher level page tables since they are only applicable to book3s64 variant and we now have a separate copy for book3s64. This helps to keep these headers simpler. Cc: Scott Wood <scottwood@freescale.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/include/asm/nohash/64/pgalloc.h42
-rw-r--r--arch/powerpc/include/asm/nohash/64/pgtable.h3
2 files changed, 10 insertions, 35 deletions
diff --git a/arch/powerpc/include/asm/nohash/64/pgalloc.h b/arch/powerpc/include/asm/nohash/64/pgalloc.h
index 8d5fc3ac43da..69ef28a81733 100644
--- a/arch/powerpc/include/asm/nohash/64/pgalloc.h
+++ b/arch/powerpc/include/asm/nohash/64/pgalloc.h
@@ -53,7 +53,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
#ifndef CONFIG_PPC_64K_PAGES
-#define pgd_populate(MM, PGD, PUD) pgd_set(PGD, __pgtable_ptr_val(PUD))
+#define pgd_populate(MM, PGD, PUD) pgd_set(PGD, (unsigned long)PUD)
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
{
@@ -68,19 +68,19 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud)
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{
- pud_set(pud, __pgtable_ptr_val(pmd));
+ pud_set(pud, (unsigned long)pmd);
}
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
pte_t *pte)
{
- pmd_set(pmd, __pgtable_ptr_val(pte));
+ pmd_set(pmd, (unsigned long)pte);
}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
pgtable_t pte_page)
{
- pmd_set(pmd, __pgtable_ptr_val(page_address(pte_page)));
+ pmd_set(pmd, (unsigned long)page_address(pte_page));
}
#define pmd_pgtable(pmd) pmd_page(pmd)
@@ -171,45 +171,23 @@ extern void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift);
extern void __tlb_remove_table(void *_table);
#endif
-#ifndef __PAGETABLE_PUD_FOLDED
-/* book3s 64 is 4 level page table */
-static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
-{
- pgd_set(pgd, __pgtable_ptr_val(pud));
-}
-
-static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
-{
- return kmem_cache_alloc(PGT_CACHE(PUD_INDEX_SIZE),
- GFP_KERNEL|__GFP_REPEAT);
-}
-
-static inline void pud_free(struct mm_struct *mm, pud_t *pud)
-{
- kmem_cache_free(PGT_CACHE(PUD_INDEX_SIZE), pud);
-}
-#endif
-
-static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
-{
- pud_set(pud, __pgtable_ptr_val(pmd));
-}
+#define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd)
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
pte_t *pte)
{
- pmd_set(pmd, __pgtable_ptr_val(pte));
+ pmd_set(pmd, (unsigned long)pte);
}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
pgtable_t pte_page)
{
- pmd_set(pmd, __pgtable_ptr_val(pte_page));
+ pmd_set(pmd, (unsigned long)pte_page);
}
static inline pgtable_t pmd_pgtable(pmd_t pmd)
{
- return (pgtable_t)pmd_page_vaddr(pmd);
+ return (pgtable_t)(pmd_val(pmd) & ~PMD_MASKED_BITS);
}
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
@@ -255,11 +233,11 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
#define __pmd_free_tlb(tlb, pmd, addr) \
pgtable_free_tlb(tlb, pmd, PMD_CACHE_INDEX)
-#ifndef __PAGETABLE_PUD_FOLDED
+#ifndef CONFIG_PPC_64K_PAGES
#define __pud_free_tlb(tlb, pud, addr) \
pgtable_free_tlb(tlb, pud, PUD_INDEX_SIZE)
-#endif /* __PAGETABLE_PUD_FOLDED */
+#endif /* CONFIG_PPC_64K_PAGES */
#define check_pgt_cache() do { } while (0)
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
index f143d6fb3576..d4d808cf905e 100644
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -108,9 +108,6 @@
#ifndef __ASSEMBLY__
/* pte_clear moved to later in this file */
-/* Pointers in the page table tree are virtual addresses */
-#define __pgtable_ptr_val(ptr) ((unsigned long)(ptr))
-
#define PMD_BAD_BITS (PTE_TABLE_SIZE-1)
#define PUD_BAD_BITS (PMD_TABLE_SIZE-1)