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s390/mm: disable KSM for storage key enabled pages

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When storage keys are enabled unmerge already merged pages and prevent
new pages from being merged.

Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Dominik Dingel
2014-10-23 12:09:17 +02:00
committed by Martin Schwidefsky
parent 2faee8ff9d
commit 3ac8e38015
3 changed files with 28 additions and 7 deletions
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arch/s390/include/asm/pgtable.h
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@@ -1751,7 +1751,7 @@ static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset)
extern int vmem_add_mapping(unsigned long start, unsigned long size);
extern int vmem_remove_mapping(unsigned long start, unsigned long size);
extern int s390_enable_sie(void);
extern void s390_enable_skey(void);
extern int s390_enable_skey(void);
extern void s390_reset_cmma(struct mm_struct *mm);
/*