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| author |   Jason J. Herne <jjherne@linux.vnet.ibm.com> | 2014-09-23 09:18:57 -0400 |
|---|---|---|
| committer |   Christian Borntraeger <borntraeger@de.ibm.com> | 2014-11-28 13:58:48 +0100 |
| commit | 9fcf93b5de063e5cadb95a7bd0130bf73edcd3b5 (patch) | |
| tree | 5c3f3f03d464210dbd82c64b0b04a67eadadda21 /arch/s390/include/asm/pgalloc.h | |
| parent | KVM: s390: trigger the right CPU exit for floating interrupts (diff) | |
| download | linux-dev-9fcf93b5de063e5cadb95a7bd0130bf73edcd3b5.tar.xz linux-dev-9fcf93b5de063e5cadb95a7bd0130bf73edcd3b5.zip | |
KVM: S390: Create helper function get_guest_storage_key
Define get_guest_storage_key which can be used to get the value of a guest
storage key. This compliments the functionality provided by the helper function
set_guest_storage_key. Both functions are needed for live migration of s390
guests that use storage keys.
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/pgalloc.h')
| -rw-r--r-- | arch/s390/include/asm/pgalloc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h index d39a31c3cdf2..ede2eab42c17 100644 --- a/arch/s390/include/asm/pgalloc.h +++ b/arch/s390/include/asm/pgalloc.h @@ -26,6 +26,7 @@ void page_table_reset_pgste(struct mm_struct *, unsigned long, unsigned long, bool init_skey); int set_guest_storage_key(struct mm_struct *mm, unsigned long addr, unsigned long key, bool nq); +unsigned long get_guest_storage_key(struct mm_struct *mm, unsigned long addr); static inline void clear_table(unsigned long *s, unsigned long val, size_t n) { |