diff options
| author | Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2008-04-28 02:13:29 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:25 -0700 |
| commit | 7f2e9525ba55b1c42ad6c4a5a59d7eb7bdd9be72 (patch) | |
| tree | 10792496f50b4b0fed8a2c356a8819ae8f9ce47f /include/asm-sparc64 | |
| parent | 8fe627ec5b7c47b1654dff50536d9709863295a3 (diff) | |
| download | linux-7f2e9525ba55b1c42ad6c4a5a59d7eb7bdd9be72.tar.bz2 | |
hugetlbfs: common code update for s390
Huge ptes have a special type on s390 and cannot be handled with the standard
pte functions in certain cases, e.g. because of a different location of the
invalid bit. This patch adds some new architecture- specific functions to
hugetlb common code, as a prerequisite for the s390 large page support.
This won't affect other architectures in functionality, but I need to add some
new dummy inline functions to the headers.
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-sparc64')
| -rw-r--r-- | include/asm-sparc64/hugetlb.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/asm-sparc64/hugetlb.h b/include/asm-sparc64/hugetlb.h index 0b9e44c85c5d..412af58926a0 100644 --- a/include/asm-sparc64/hugetlb.h +++ b/include/asm-sparc64/hugetlb.h @@ -44,4 +44,41 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, { } +static inline int huge_pte_none(pte_t pte) +{ + return pte_none(pte); +} + +static inline pte_t huge_pte_wrprotect(pte_t pte) +{ + return pte_wrprotect(pte); +} + +static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) +{ + ptep_set_wrprotect(mm, addr, ptep); +} + +static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep, + pte_t pte, int dirty) +{ + return ptep_set_access_flags(vma, addr, ptep, pte, dirty); +} + +static inline pte_t huge_ptep_get(pte_t *ptep) +{ + return *ptep; +} + +static inline int arch_prepare_hugepage(struct page *page) +{ + return 0; +} + +static inline void arch_release_hugepage(struct page *page) +{ +} + #endif /* _ASM_SPARC64_HUGETLB_H */ |