diff options
| author | David Daney <ddaney@caviumnetworks.com> | 2009-05-28 02:47:43 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-06-17 12:06:30 +0200 |
| commit | dd7943920b492d9d8a79080fe05e25ecd7e10bc3 (patch) | |
| tree | 51c5dd2079819186009e5703c936ddeb3cd845e2 | |
| parent | MIPS: Add support files for hugetlbfs. (diff) | |
| download | linux-dd7943920b492d9d8a79080fe05e25ecd7e10bc3.tar.xz linux-dd7943920b492d9d8a79080fe05e25ecd7e10bc3.zip | |
MIPS: Add hugetlbfs page defines.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/include/asm/mipsregs.h | 16 | ||||
| -rw-r--r-- | arch/mips/include/asm/page.h | 5 | ||||
| -rw-r--r-- | arch/mips/include/asm/pgtable-bits.h | 1 | ||||
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 10 |
4 files changed, 32 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index 32ef8bec5c85..a581d60cbcc2 100644 --- a/arch/mips/include/asm/mipsregs.h +++ b/arch/mips/include/asm/mipsregs.h @@ -220,6 +220,22 @@ #error Bad page size configuration! #endif +/* + * Default huge tlb size for a given kernel configuration + */ +#ifdef CONFIG_PAGE_SIZE_4KB +#define PM_HUGE_MASK PM_1M +#elif defined(CONFIG_PAGE_SIZE_8KB) +#define PM_HUGE_MASK PM_4M +#elif defined(CONFIG_PAGE_SIZE_16KB) +#define PM_HUGE_MASK PM_16M +#elif defined(CONFIG_PAGE_SIZE_32KB) +#define PM_HUGE_MASK PM_64M +#elif defined(CONFIG_PAGE_SIZE_64KB) +#define PM_HUGE_MASK PM_256M +#elif defined(CONFIG_HUGETLB_PAGE) +#error Bad page size configuration for hugetlbfs! +#endif /* * Values used for computation of new tlb entries diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h index 72c80d2034c2..dc0eaa731281 100644 --- a/arch/mips/include/asm/page.h +++ b/arch/mips/include/asm/page.h @@ -32,6 +32,11 @@ #define PAGE_SIZE (1UL << PAGE_SHIFT) #define PAGE_MASK (~((1 << PAGE_SHIFT) - 1)) +#define HPAGE_SHIFT (PAGE_SHIFT + PAGE_SHIFT - 3) +#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT) +#define HPAGE_MASK (~(HPAGE_SIZE - 1)) +#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) + #ifndef __ASSEMBLY__ #include <linux/pfn.h> diff --git a/arch/mips/include/asm/pgtable-bits.h b/arch/mips/include/asm/pgtable-bits.h index 51b34a48c84a..1073e6df8621 100644 --- a/arch/mips/include/asm/pgtable-bits.h +++ b/arch/mips/include/asm/pgtable-bits.h @@ -72,6 +72,7 @@ #else #define _PAGE_R4KBUG (1<<5) /* workaround for r4k bug */ +#define _PAGE_HUGE (1<<5) /* huge tlb page */ #define _PAGE_GLOBAL (1<<6) #define _PAGE_VALID (1<<7) #define _PAGE_SILENT_READ (1<<7) /* synonym */ diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index 6a0edf72ffbc..1a9f9b257551 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -292,6 +292,16 @@ static inline pte_t pte_mkyoung(pte_t pte) pte_val(pte) |= _PAGE_SILENT_READ; return pte; } + +#ifdef _PAGE_HUGE +static inline int pte_huge(pte_t pte) { return pte_val(pte) & _PAGE_HUGE; } + +static inline pte_t pte_mkhuge(pte_t pte) +{ + pte_val(pte) |= _PAGE_HUGE; + return pte; +} +#endif /* _PAGE_HUGE */ #endif static inline int pte_special(pte_t pte) { return 0; } static inline pte_t pte_mkspecial(pte_t pte) { return pte; } |