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| author | Arnd Bergmann <arnd@arndb.de> | 2012-01-09 20:16:29 +0400 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-01-09 20:16:29 +0400 |
| commit | dcf7ec5ee62a78123057a1e286c88ca739717409 (patch) | |
| tree | fa3f19434638a942ba66d236dde4d9aaadf8b370 /arch/arm/include/asm/pgalloc.h | |
| parent | 15db3e823c3246e3bd31fe454f5c8927eb85caf2 (diff) | |
| parent | 142f2101a86ade2d6c9dfbedf82e1b5b31c8fce6 (diff) | |
| download | linux-dcf7ec5ee62a78123057a1e286c88ca739717409.tar.xz | |
Merge branch 'samsung/driver' into next/drivers
Conflicts:
arch/arm/mach-mxs/include/mach/common.h
Pull in previous samsung conflict merges and do a trivial
merge of an mxs double-add conflict.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/include/asm/pgalloc.h')
| -rw-r--r-- | arch/arm/include/asm/pgalloc.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h index 3e08fd3fbb6b..943504f53f57 100644 --- a/arch/arm/include/asm/pgalloc.h +++ b/arch/arm/include/asm/pgalloc.h @@ -25,12 +25,34 @@ #define _PAGE_USER_TABLE (PMD_TYPE_TABLE | PMD_BIT4 | PMD_DOMAIN(DOMAIN_USER)) #define _PAGE_KERNEL_TABLE (PMD_TYPE_TABLE | PMD_BIT4 | PMD_DOMAIN(DOMAIN_KERNEL)) +#ifdef CONFIG_ARM_LPAE + +static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) +{ + return (pmd_t *)get_zeroed_page(GFP_KERNEL | __GFP_REPEAT); +} + +static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) +{ + BUG_ON((unsigned long)pmd & (PAGE_SIZE-1)); + free_page((unsigned long)pmd); +} + +static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) +{ + set_pud(pud, __pud(__pa(pmd) | PMD_TYPE_TABLE)); +} + +#else /* !CONFIG_ARM_LPAE */ + /* * Since we have only two-level page tables, these are trivial */ #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() + +#endif /* CONFIG_ARM_LPAE */ extern pgd_t *pgd_alloc(struct mm_struct *mm); extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); @@ -109,7 +131,9 @@ static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t pte, { pmdval_t pmdval = (pte + PTE_HWTABLE_OFF) | prot; pmdp[0] = __pmd(pmdval); +#ifndef CONFIG_ARM_LPAE pmdp[1] = __pmd(pmdval + 256 * sizeof(pte_t)); +#endif flush_pmd_entry(pmdp); } |