diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-11-22 17:30:28 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2011-12-08 10:30:36 +0000 |
| commit | a32618d28dbe6e9bf8ec508ccbc3561a7d7d32f0 (patch) | |
| tree | 06bc43e5db2d7c05e5745a961e9698e95aa6c05d | |
| parent | 03a6b8274cc61fb9bb77aaa102e63840461c5f3a (diff) | |
ARM: pgtable: switch to use pgtable-nopud.h
Nick Piggin noted upon introducing 4level-fixup.h:
| Add a temporary "fallback" header so architectures can run with
| the 4level pagetables patch without modification. All architectures
| should be converted to use the folding headers (include/asm-generic/
| pgtable-nop?d.h) as soon as possible, and the fallback header removed.
This makes ARM compliant with this statement.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| -rw-r--r-- | arch/arm/include/asm/pgalloc.h | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/pgtable.h | 23 | ||||
| -rw-r--r-- | arch/arm/include/asm/tlb.h | 1 |
3 files changed, 15 insertions, 11 deletions
diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h index 3e08fd3fbb6b..7418894a737f 100644 --- a/arch/arm/include/asm/pgalloc.h +++ b/arch/arm/include/asm/pgalloc.h @@ -30,7 +30,7 @@ */ #define pmd_alloc_one(mm,addr) ({ BUG(); ((pmd_t *)2); }) #define pmd_free(mm, pmd) do { } while (0) -#define pgd_populate(mm,pmd,pte) BUG() +#define pud_populate(mm,pmd,pte) BUG() extern pgd_t *pgd_alloc(struct mm_struct *mm); extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index 03893a55e680..e14826e7efd9 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -11,15 +11,16 @@ #define _ASMARM_PGTABLE_H #include <linux/const.h> -#include <asm-generic/4level-fixup.h> #include <asm/proc-fns.h> #ifndef CONFIG_MMU +#include <asm-generic/4level-fixup.h> #include "pgtable-nommu.h" #else +#include <asm-generic/pgtable-nopud.h> #include <asm/memory.h> #include <mach/vmalloc.h> #include <asm/pgtable-hwdef.h> @@ -164,20 +165,22 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; #define pgd_offset_k(addr) pgd_offset(&init_mm, addr) /* - * The "pgd_xxx()" functions here are trivial for a folded two-level - * setup: the pgd is never bad, and a pmd always exists (as it's folded - * into the pgd entry) + * The "pud_xxx()" functions here are trivial when the pmd is folded into + * the pud: the pud entry is never bad, always exists, and can't be set or + * cleared. */ -#define pgd_none(pgd) (0) -#define pgd_bad(pgd) (0) -#define pgd_present(pgd) (1) -#define pgd_clear(pgdp) do { } while (0) -#define set_pgd(pgd,pgdp) do { } while (0) +#define pud_none(pud) (0) +#define pud_bad(pud) (0) +#define pud_present(pud) (1) +#define pud_clear(pudp) do { } while (0) #define set_pud(pud,pudp) do { } while (0) /* Find an entry in the second-level page table.. */ -#define pmd_offset(dir, addr) ((pmd_t *)(dir)) +static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) +{ + return (pmd_t *)pud; +} #define pmd_none(pmd) (!pmd_val(pmd)) #define pmd_present(pmd) (pmd_val(pmd)) diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h index 265f908c4a6e..b509e441e0ad 100644 --- a/arch/arm/include/asm/tlb.h +++ b/arch/arm/include/asm/tlb.h @@ -204,6 +204,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, #define pte_free_tlb(tlb, ptep, addr) __pte_free_tlb(tlb, ptep, addr) #define pmd_free_tlb(tlb, pmdp, addr) pmd_free((tlb)->mm, pmdp) +#define pud_free_tlb(tlb, pudp, addr) pud_free((tlb)->mm, pudp) #define tlb_migrate_finish(mm) do { } while (0) |