diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-04-22 10:26:20 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-04-23 16:56:20 +0200 |
| commit | b7d14f3a92223c3f5e52e9f20c74cb96dc130e87 (patch) | |
| tree | 924f6b3fb2b7a364d250763ca45f84dbce7ab6af | |
| parent | 77a87f0cb1a57237860754525d4e8cb2789e6e12 (diff) | |
| download | op-kernel-dev-b7d14f3a92223c3f5e52e9f20c74cb96dc130e87.zip op-kernel-dev-b7d14f3a92223c3f5e52e9f20c74cb96dc130e87.tar.gz | |
s390/mm: correct transfer of dirty & young bits in __pmd_to_pte
The dirty & young bit from the pmd is not copied correctly to the
pseudo pte in __pmd_to_pte. In fact it is not copied at all, the
bits get lost. As the old style huge page currently does not need
the dirty & young information this has no effect, but may be needed
in the future.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | arch/s390/mm/hugetlbpage.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c index 210ffed..c67e8bf 100644 --- a/arch/s390/mm/hugetlbpage.c +++ b/arch/s390/mm/hugetlbpage.c @@ -70,8 +70,8 @@ static inline pte_t __pmd_to_pte(pmd_t pmd) pte_val(pte) |= (pmd_val(pmd) & _SEGMENT_ENTRY_WRITE) << 4; pte_val(pte) |= (pmd_val(pmd) & _SEGMENT_ENTRY_INVALID) << 5; pte_val(pte) |= (pmd_val(pmd) & _SEGMENT_ENTRY_PROTECT); - pmd_val(pmd) |= (pte_val(pte) & _PAGE_DIRTY) << 10; - pmd_val(pmd) |= (pte_val(pte) & _PAGE_YOUNG) << 10; + pte_val(pte) |= (pmd_val(pmd) & _SEGMENT_ENTRY_DIRTY) >> 10; + pte_val(pte) |= (pmd_val(pmd) & _SEGMENT_ENTRY_YOUNG) >> 10; } else pte_val(pte) = _PAGE_INVALID; return pte; |
