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xtensa: drop _PAGE_FILE and pte_file()-related helpers 

We've replaced remap_file_pages(2) implementation with emulation.  Nobody
creates non-linear mapping anymore.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Kirill A. Shutemov 2015-02-10 14:11:25 -08:00 committed by Linus Torvalds
parent 0a19136205
commit d9ecee281b
1 changed files with 0 additions and 10 deletions
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10
arch/xtensa/include/asm/pgtable.h
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@ -89,8 +89,6 @@
* (PAGE_NONE)| PPN | 0 | 00 | ADW | 01 | 11 | 11 |
* +-----------------------------------------+
* swap | index | type | 01 | 11 | 00 |
* +- - - - - - - - - - - - - - - - - - - - -+
* file | file offset | 01 | 11 | 10 |
* +-----------------------------------------+
*
* For T1050 hardware and earlier the layout differs for present and (PAGE_NONE)
@ -111,7 +109,6 @@
* index swap offset / PAGE_SIZE (bit 11-31: 21 bits -> 8 GB)
* (note that the index is always non-zero)
* type swap type (5 bits -> 32 types)
* file offset 26-bit offset into the file, in increments of PAGE_SIZE
*
* Notes:
* - (PROT_NONE) is a special case of 'present' but causes an exception for
@ -144,7 +141,6 @@
#define _PAGE_HW_VALID 0x00
#define _PAGE_NONE 0x0f
#endif
#define _PAGE_FILE (1<<1) /* file mapped page, only if !present */
#define _PAGE_USER (1<<4) /* user access (ring=1) */
@ -260,7 +256,6 @@ static inline void pgtable_cache_init(void) { }
static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITABLE; }
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; }
static inline int pte_special(pte_t pte) { return 0; }
static inline pte_t pte_wrprotect(pte_t pte)
@ -390,11 +385,6 @@ ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
#define PTE_FILE_MAX_BITS 26
#define pte_to_pgoff(pte) (pte_val(pte) >> 6)
#define pgoff_to_pte(off) \
((pte_t) { ((off) << 6) | _PAGE_CA_INVALID | _PAGE_FILE | _PAGE_USER })
#endif /* !defined (__ASSEMBLY__) */