diff options
| author | Dominik Dingel <dingel@linux.vnet.ibm.com> | 2014-01-14 15:02:11 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-04-22 09:36:23 +0200 |
| commit | 65eef33550f68e9a7f7d2dc64da94fb6cb85be2c (patch) | |
| tree | 7a1d6447ee180fcf2f648040ac0b4439dbd908d5 /arch/s390/include/asm/mmu.h | |
| parent | 0f689a33ad17845363acdc6d52783befd6ad116c (diff) | |
KVM: s390: Adding skey bit to mmu context
For lazy storage key handling, we need a mechanism to track if the
process ever issued a storage key operation.
This patch adds the basic infrastructure for making the storage
key handling optional, but still leaves it enabled for now by default.
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/mmu.h')
| -rw-r--r-- | arch/s390/include/asm/mmu.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h index f77695a82f64..a5e656260a70 100644 --- a/arch/s390/include/asm/mmu.h +++ b/arch/s390/include/asm/mmu.h @@ -16,6 +16,8 @@ typedef struct { unsigned long vdso_base; /* The mmu context has extended page tables. */ unsigned int has_pgste:1; + /* The mmu context uses storage keys. */ + unsigned int use_skey:1; } mm_context_t; #define INIT_MM_CONTEXT(name) \ |