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[S390] vmemmap: use clear_table to initialise page tables.

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Always use clear_table to initialise page tables. The overlapping
memcpy is just a leftover of a previous version that wasn't fully
converted to clear_table.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2008-04-30 13:38:44 +02:00 committed by Martin Schwidefsky
parent 484875b11f
commit 8fc6365868
1 changed files with 2 additions and 3 deletions
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5
arch/s390/mm/vmem.c
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@ -77,8 +77,7 @@ static inline pud_t *vmem_pud_alloc(void)
pud = vmem_alloc_pages(2);
if (!pud)
return NULL;
pud_val(*pud) = _REGION3_ENTRY_EMPTY;
memcpy(pud + 1, pud, (PTRS_PER_PUD - 1)*sizeof(pud_t));
clear_table((unsigned long *) pud, _REGION3_ENTRY_EMPTY, PAGE_SIZE * 4);
#endif
return pud;
}
@ -91,7 +90,7 @@ static inline pmd_t *vmem_pmd_alloc(void)
pmd = vmem_alloc_pages(2);
if (!pmd)
return NULL;
clear_table((unsigned long *) pmd, _SEGMENT_ENTRY_EMPTY, PAGE_SIZE*4);
clear_table((unsigned long *) pmd, _SEGMENT_ENTRY_EMPTY, PAGE_SIZE * 4);
#endif
return pmd;
}