diff options
| author | Robin Holt <holt@sgi.com> | 2005-11-11 18:35:43 +0300 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-11-11 20:37:29 +0300 |
| commit | 837cd0bdf54dd954cd6aa43d250f75ab5db79617 (patch) | |
| tree | ef28b91f1ac8c1c9f4244da9be1f994306ef4070 /include/asm-ia64/page.h | |
| parent | d12eb7e11cf30c30f639b2093735af2ac177830b (diff) | |
| download | linux-837cd0bdf54dd954cd6aa43d250f75ab5db79617.tar.xz | |
[IA64] 4-level page tables
This patch introduces 4-level page tables to ia64. I have run
some benchmarks and found nothing interesting. Performance has
consistently fallen within the noise range.
It also introduces a config option (setting the default to 3
levels). The config option prevents having 4 level page
tables with 64k base page size.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64/page.h')
| -rw-r--r-- | include/asm-ia64/page.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/asm-ia64/page.h b/include/asm-ia64/page.h index 9d41548b7fef..9dd9da105278 100644 --- a/include/asm-ia64/page.h +++ b/include/asm-ia64/page.h @@ -47,8 +47,6 @@ #define PERCPU_PAGE_SHIFT 16 /* log2() of max. size of per-CPU area */ #define PERCPU_PAGE_SIZE (__IA64_UL_CONST(1) << PERCPU_PAGE_SHIFT) -#define RGN_MAP_LIMIT ((1UL << (4*PAGE_SHIFT - 12)) - PAGE_SIZE) /* per region addr limit */ - #ifdef CONFIG_HUGETLB_PAGE # define HPAGE_REGION_BASE RGN_BASE(RGN_HPAGE) @@ -175,11 +173,17 @@ get_order (unsigned long size) */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pmd; } pmd_t; +#ifdef CONFIG_PGTABLE_4 + typedef struct { unsigned long pud; } pud_t; +#endif typedef struct { unsigned long pgd; } pgd_t; typedef struct { unsigned long pgprot; } pgprot_t; # define pte_val(x) ((x).pte) # define pmd_val(x) ((x).pmd) +#ifdef CONFIG_PGTABLE_4 +# define pud_val(x) ((x).pud) +#endif # define pgd_val(x) ((x).pgd) # define pgprot_val(x) ((x).pgprot) |