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| author | Fan Zhang <zhangfan@linux.vnet.ibm.com> | 2016-08-15 02:53:22 (GMT) |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-09-08 11:40:39 (GMT) |
| commit | 80cd8763388b52fa9129cbb4b57a3615a55afd40 (patch) | |
| tree | b3182213435cbe8c3a321c6ed6d8817dc5a4b251 /arch/s390/kvm/kvm-s390.h | |
| parent | c14b88d76624e02b9895914b85b9d8b2c984563c (diff) | |
| download | linux-80cd8763388b52fa9129cbb4b57a3615a55afd40.tar.xz | |
KVM: s390: lazy enable RI
Only enable runtime instrumentation if the guest issues an RI related
instruction or if userspace changes the riccb to a valid state.
This makes entry/exit a tiny bit faster.
Initial patch by Christian Borntraeger
Signed-off-by: Fan Zhang <zhangfan@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.h')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index c3d4f16..9995cab 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -245,6 +245,7 @@ static inline void kvm_s390_retry_instr(struct kvm_vcpu *vcpu) /* implemented in priv.c */ int is_valid_psw(psw_t *psw); +int kvm_s390_handle_aa(struct kvm_vcpu *vcpu); int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); int kvm_s390_handle_01(struct kvm_vcpu *vcpu); |