diff options
| author | Matt Fleming <matt@console-pimps.org> | 2009-11-25 22:00:08 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-12-17 14:31:15 +0900 |
| commit | b73c806341cfc7492ede6a2ce713cb579547d0ab (patch) | |
| tree | 9318727eab90409f518c95031445063e93c0a651 /arch/sh/include/asm/pgtable.h | |
| parent | 2f7bb2dfed3b15b388c88250b66f590aabc438da (diff) | |
sh: Abstract the number of page table levels
Keep the dimensions of the page tables in a separate header file in
preparation for allowing a three level page table structure.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include/asm/pgtable.h')
| -rw-r--r-- | arch/sh/include/asm/pgtable.h | 18 |
1 files changed, 1 insertions, 17 deletions
diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h index ba3046e4f06f..9a0f66c1134c 100644 --- a/arch/sh/include/asm/pgtable.h +++ b/arch/sh/include/asm/pgtable.h @@ -12,7 +12,7 @@ #ifndef __ASM_SH_PGTABLE_H #define __ASM_SH_PGTABLE_H -#include <asm-generic/pgtable-nopmd.h> +#include <asm/pgtable_nopmd.h> #include <asm/page.h> #ifndef __ASSEMBLY__ @@ -51,28 +51,12 @@ static inline unsigned long long neff_sign_extend(unsigned long val) #define NPHYS_SIGN (1LL << (NPHYS - 1)) #define NPHYS_MASK (-1LL << NPHYS) -/* - * traditional two-level paging structure - */ -/* PTE bits */ -#if defined(CONFIG_X2TLB) || defined(CONFIG_SUPERH64) -# define PTE_MAGNITUDE 3 /* 64-bit PTEs on extended mode SH-X2 TLB */ -#else -# define PTE_MAGNITUDE 2 /* 32-bit PTEs */ -#endif -#define PTE_SHIFT PAGE_SHIFT -#define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE) - -/* PGD bits */ -#define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS) #define PGDIR_SIZE (1UL << PGDIR_SHIFT) #define PGDIR_MASK (~(PGDIR_SIZE-1)) /* Entries per level */ #define PTRS_PER_PTE (PAGE_SIZE / (1 << PTE_MAGNITUDE)) -#define PTRS_PER_PGD (PAGE_SIZE / sizeof(pgd_t)) -#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) #define FIRST_USER_ADDRESS 0 #define PHYS_ADDR_MASK29 0x1fffffff |