diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2014-09-22 08:50:51 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-09-25 10:52:09 +0200 |
| commit | 6a5c1482e2b700e89f174ddb42434b37f15abccd (patch) | |
| tree | 4c3e6377eb173f1b7dc0d003de93f9063766a507 /arch/s390/include | |
| parent | 70c9d296325b398a87c30de77cc94033a60bdad2 (diff) | |
s390/mm: remove change bit override support
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 5efb2fe186e..7c4af56f2b7 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -216,7 +216,6 @@ extern unsigned long MODULES_END; */ /* Hardware bits in the page table entry */ -#define _PAGE_CO 0x100 /* HW Change-bit override */ #define _PAGE_PROTECT 0x200 /* HW read-only bit */ #define _PAGE_INVALID 0x400 /* HW invalid bit */ #define _PAGE_LARGE 0x800 /* Bit to mark a large pte */ @@ -233,8 +232,8 @@ extern unsigned long MODULES_END; #define __HAVE_ARCH_PTE_SPECIAL /* Set of bits not changed in pte_modify */ -#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_SPECIAL | _PAGE_CO | \ - _PAGE_DIRTY | _PAGE_YOUNG) +#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_SPECIAL | _PAGE_DIRTY | \ + _PAGE_YOUNG) /* * handle_pte_fault uses pte_present, pte_none and pte_file to find out the @@ -353,7 +352,6 @@ extern unsigned long MODULES_END; #define _REGION3_ENTRY_LARGE 0x400 /* RTTE-format control, large page */ #define _REGION3_ENTRY_RO 0x200 /* page protection bit */ -#define _REGION3_ENTRY_CO 0x100 /* change-recording override */ /* Bits in the segment table entry */ #define _SEGMENT_ENTRY_BITS 0xfffffffffffffe33UL @@ -370,7 +368,6 @@ extern unsigned long MODULES_END; #define _SEGMENT_ENTRY_YOUNG 0x1000 /* SW segment young bit */ #define _SEGMENT_ENTRY_SPLIT 0x0800 /* THP splitting bit */ #define _SEGMENT_ENTRY_LARGE 0x0400 /* STE-format control, large page */ -#define _SEGMENT_ENTRY_CO 0x0100 /* change-recording override */ #define _SEGMENT_ENTRY_READ 0x0002 /* SW segment read bit */ #define _SEGMENT_ENTRY_WRITE 0x0001 /* SW segment write bit */ @@ -887,8 +884,6 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, pgste = pgste_set_pte(ptep, pgste, entry); pgste_set_unlock(ptep, pgste); } else { - if (!(pte_val(entry) & _PAGE_INVALID) && MACHINE_HAS_EDAT1) - pte_val(entry) |= _PAGE_CO; *ptep = entry; } } |