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| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2016-05-09 11:22:34 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-10 12:07:28 +0200 |
| commit | 154c8c19c35b6da94a623cb793458e203572083d (patch) | |
| tree | 9ca37ad9fa34d1495bb1c770b035192c87a15854 /arch/s390/include/asm/pgtable.h | |
| parent | 8d6037a7b4f21708451d4aec14828f9ebe77b37a (diff) | |
| download | linux-154c8c19c35b6da94a623cb793458e203572083d.tar.gz linux-154c8c19c35b6da94a623cb793458e203572083d.tar.bz2 linux-154c8c19c35b6da94a623cb793458e203572083d.zip | |
s390/mm: return key via pointer in get_guest_storage_key
Let's just split returning the key and reporting errors. This makes calling
code easier and avoids bugs as happened already.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/pgtable.h')
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 42b968a85863..91f0e7b79821 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -893,7 +893,8 @@ void ptep_zap_key(struct mm_struct *mm, unsigned long addr, pte_t *ptep); bool test_and_clear_guest_dirty(struct mm_struct *mm, unsigned long address); int set_guest_storage_key(struct mm_struct *mm, unsigned long addr, unsigned char key, bool nq); -unsigned long get_guest_storage_key(struct mm_struct *mm, unsigned long addr); +int get_guest_storage_key(struct mm_struct *mm, unsigned long addr, + unsigned char *key); /* * Certain architectures need to do special things when PTEs |