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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2013-07-23 20:57:57 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-08-22 12:20:06 +0200
commite509861105a3c1425f3f929bd631f88340b499bf (patch)
tree0616b1c17c1f88dfb63a3bce0774a3e518f49119 /arch/s390/kernel/vdso.c
parent416fd0ffb14afead5b1feea14bbf33c2277942ef (diff)
downloadlinux-e509861105a3c1425f3f929bd631f88340b499bf.tar.bz2
s390/mm: cleanup page table definitions
Improve the encoding of the different pte types and the naming of the page, segment table and region table bits. Due to the different pte encoding the hugetlbfs primitives need to be adapted as well. To improve compatability with common code make the huge ptes use the encoding of normal ptes. The conversion between the pte and pmd encoding for a huge pte is done with set_huge_pte_at and huge_ptep_get. Overall the code is now easier to understand. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/vdso.c')
-rw-r--r--arch/s390/kernel/vdso.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 3cf20930574e..05d75c413137 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -113,11 +113,11 @@ int vdso_alloc_per_cpu(struct _lowcore *lowcore)
clear_table((unsigned long *) segment_table, _SEGMENT_ENTRY_EMPTY,
PAGE_SIZE << SEGMENT_ORDER);
- clear_table((unsigned long *) page_table, _PAGE_TYPE_EMPTY,
+ clear_table((unsigned long *) page_table, _PAGE_INVALID,
256*sizeof(unsigned long));
*(unsigned long *) segment_table = _SEGMENT_ENTRY + page_table;
- *(unsigned long *) page_table = _PAGE_RO + page_frame;
+ *(unsigned long *) page_table = _PAGE_PROTECT + page_frame;
psal = (u32 *) (page_table + 256*sizeof(unsigned long));
aste = psal + 32;