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ARC: MMUv4 preps/2 - Reshuffle PTE bits

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With previous commit freeing up PTE bits, reassign them so as to:

- Match the bit to H/w counterpart where possible
  (e.g. MMUv2 GLOBAL/PRESENT, this avoids a shift in create_tlb())
- Avoid holes in _PAGE_xxx definitions

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta
2013-06-17 19:44:06 +05:30
parent 64b703ef27
commit d091fcb97f
3 changed files with 11 additions and 25 deletions
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22
arch/arc/include/asm/pgtable.h
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@@ -60,30 +60,24 @@
#define _PAGE_EXECUTE (1<<3) /* Page has user execute perm (H) */
#define _PAGE_WRITE (1<<4) /* Page has user write perm (H) */
#define _PAGE_READ (1<<5) /* Page has user read perm (H) */
#define _PAGE_GLOBAL (1<<9) /* Page is global (H) */
#define _PAGE_MODIFIED (1<<10) /* Page modified (dirty) (S) */
#define _PAGE_FILE (1<<10) /* page cache/ swap (S) */
#define _PAGE_PRESENT (1<<11) /* TLB entry is valid (H) */
#define _PAGE_MODIFIED (1<<6) /* Page modified (dirty) (S) */
#define _PAGE_FILE (1<<7) /* page cache/ swap (S) */
#define _PAGE_GLOBAL (1<<8) /* Page is global (H) */
#define _PAGE_PRESENT (1<<10) /* TLB entry is valid (H) */
#else /* MMU v3 onwards */
/* PD1 */
#define _PAGE_CACHEABLE (1<<0) /* Page is cached (H) */
#define _PAGE_EXECUTE (1<<1) /* Page has user execute perm (H) */
#define _PAGE_WRITE (1<<2) /* Page has user write perm (H) */
#define _PAGE_READ (1<<3) /* Page has user read perm (H) */
#define _PAGE_ACCESSED (1<<7) /* Page is accessed (S) */
/* PD0 */
#define _PAGE_ACCESSED (1<<4) /* Page is accessed (S) */
#define _PAGE_MODIFIED (1<<5) /* Page modified (dirty) (S) */
#define _PAGE_FILE (1<<6) /* page cache/ swap (S) */
#define _PAGE_GLOBAL (1<<8) /* Page is global (H) */
#define _PAGE_PRESENT (1<<9) /* TLB entry is valid (H) */
#define _PAGE_SHARED_CODE (1<<10) /* Shared Code page with cmn vaddr
#define _PAGE_SHARED_CODE (1<<11) /* Shared Code page with cmn vaddr
usable for shared TLB entries (H) */
#define _PAGE_MODIFIED (1<<11) /* Page modified (dirty) (S) */
#define _PAGE_FILE (1<<12) /* page cache/ swap (S) */
#define _PAGE_SHARED_CODE_H (1<<31) /* Hardware counterpart of above */
#endif
/* vmalloc permissions */