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| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2016-05-10 09:43:11 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-10 12:07:30 +0200 |
| commit | 1824c723ac90f9870ebafae4b3b3e5f4b82ffeef (patch) | |
| tree | 3168e13812bb9110be073849089f8936df750cd1 /arch/s390/include/asm/pgtable.h | |
| parent | KVM: s390: pfmf: take care of amode when setting reg2 (diff) | |
| download | linux-1824c723ac90f9870ebafae4b3b3e5f4b82ffeef.tar.xz linux-1824c723ac90f9870ebafae4b3b3e5f4b82ffeef.zip | |
KVM: s390: pfmf: support conditional-sske facility
We already indicate that facility but don't implement it in our pfmf
interception handler. Let's add a new storage key handling function for
conditionally setting the guest storage key.
As we will reuse this function later on, let's directly implement returning
the old key via parameter and indicating if any change happened via rc.
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, 3 insertions, 0 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 91f0e7b79821..2f6702e27db9 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -893,6 +893,9 @@ 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); +int cond_set_guest_storage_key(struct mm_struct *mm, unsigned long addr, + unsigned char key, unsigned char *oldkey, + bool nq, bool mr, bool mc); int get_guest_storage_key(struct mm_struct *mm, unsigned long addr, unsigned char *key); |