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s390/mm: ignore change bit for vmemmap 

Add hint to the page tables that we don't care about the change bit
in storage keys that belong to vmemmap pages.

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 2013-02-16 12:42:35 +01:00 committed by Martin Schwidefsky
parent 1819ed1f06
commit 17ea345a47
1 changed files with 2 additions and 1 deletions
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3
arch/s390/mm/vmem.c
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@ -236,7 +236,8 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
if (!new_page)
goto out;
pmd_val(*pm_dir) = __pa(new_page) |
_SEGMENT_ENTRY | _SEGMENT_ENTRY_LARGE;
_SEGMENT_ENTRY | _SEGMENT_ENTRY_LARGE |
_SEGMENT_ENTRY_CO;
address = (address + PMD_SIZE) & PMD_MASK;
continue;
}