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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-02-09 18:24:36 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-02-09 18:24:40 +0100 |
| commit | 5a216a20837c5f5fa1ca4b8ae8991ffd96b08e6f (patch) | |
| tree | dde54e28497e920fa460cc95dadb6b38f1b2dbe0 /include/asm-s390/pgalloc.h | |
| parent | 146e4b3c8b92071b18f0b2e6f47165bad4f9e825 (diff) | |
| download | linux-3.10-5a216a20837c5f5fa1ca4b8ae8991ffd96b08e6f.tar.gz linux-3.10-5a216a20837c5f5fa1ca4b8ae8991ffd96b08e6f.tar.bz2 linux-3.10-5a216a20837c5f5fa1ca4b8ae8991ffd96b08e6f.zip | |
[S390] Add four level page tables for CONFIG_64BIT=y.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/pgalloc.h')
| -rw-r--r-- | include/asm-s390/pgalloc.h | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/include/asm-s390/pgalloc.h b/include/asm-s390/pgalloc.h index af4aee856df..cc47dd65a49 100644 --- a/include/asm-s390/pgalloc.h +++ b/include/asm-s390/pgalloc.h @@ -73,11 +73,17 @@ static inline unsigned long pgd_entry_type(struct mm_struct *mm) static inline unsigned long pgd_entry_type(struct mm_struct *mm) { - return _REGION3_ENTRY_EMPTY; + return _REGION2_ENTRY_EMPTY; } -#define pud_alloc_one(mm,address) ({ BUG(); ((pud_t *)2); }) -#define pud_free(mm, x) do { } while (0) +static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address) +{ + unsigned long *table = crst_table_alloc(mm, mm->context.noexec); + if (table) + crst_table_init(table, _REGION3_ENTRY_EMPTY); + return (pud_t *) table; +} +#define pud_free(mm, pud) crst_table_free(mm, (unsigned long *) pud) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr) { @@ -88,8 +94,21 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr) } #define pmd_free(mm, pmd) crst_table_free(mm, (unsigned long *) pmd) -#define pgd_populate(mm, pgd, pud) BUG() -#define pgd_populate_kernel(mm, pgd, pud) BUG() +static inline void pgd_populate_kernel(struct mm_struct *mm, + pgd_t *pgd, pud_t *pud) +{ + pgd_val(*pgd) = _REGION2_ENTRY | __pa(pud); +} + +static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) +{ + pgd_t *shadow_pgd = get_shadow_table(pgd); + pud_t *shadow_pud = get_shadow_table(pud); + + if (shadow_pgd && shadow_pud) + pgd_populate_kernel(mm, shadow_pgd, shadow_pud); + pgd_populate_kernel(mm, pgd, pud); +} static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) |