diff options
| -rw-r--r-- | arch/s390/kvm/interrupt.c | 15 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 4 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.h | 10 |
3 files changed, 14 insertions, 15 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index a8be542b9cb0..373e32346d68 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -69,13 +69,8 @@ static int ckc_interrupts_enabled(struct kvm_vcpu *vcpu) static int ckc_irq_pending(struct kvm_vcpu *vcpu) { - preempt_disable(); - if (!(vcpu->arch.sie_block->ckc < - get_tod_clock_fast() + vcpu->arch.sie_block->epoch)) { - preempt_enable(); + if (vcpu->arch.sie_block->ckc >= kvm_s390_get_tod_clock_fast(vcpu->kvm)) return 0; - } - preempt_enable(); return ckc_interrupts_enabled(vcpu); } @@ -851,9 +846,7 @@ int kvm_s390_handle_wait(struct kvm_vcpu *vcpu) goto no_timer; } - preempt_disable(); - now = get_tod_clock_fast() + vcpu->arch.sie_block->epoch; - preempt_enable(); + now = kvm_s390_get_tod_clock_fast(vcpu->kvm); sltime = tod_to_ns(vcpu->arch.sie_block->ckc - now); /* underflow */ @@ -892,9 +885,7 @@ enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer) u64 now, sltime; vcpu = container_of(timer, struct kvm_vcpu, arch.ckc_timer); - preempt_disable(); - now = get_tod_clock_fast() + vcpu->arch.sie_block->epoch; - preempt_enable(); + now = kvm_s390_get_tod_clock_fast(vcpu->kvm); sltime = tod_to_ns(vcpu->arch.sie_block->ckc - now); /* diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 87bd602f326c..618c85411a51 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -568,9 +568,7 @@ static int kvm_s390_get_tod_low(struct kvm *kvm, struct kvm_device_attr *attr) { u64 gtod; - preempt_disable(); - gtod = get_tod_clock() + kvm->arch.epoch; - preempt_enable(); + gtod = kvm_s390_get_tod_clock_fast(kvm); if (copy_to_user((void __user *)attr->addr, >od, sizeof(gtod))) return -EFAULT; VM_EVENT(kvm, 3, "QUERY: TOD base: 0x%llx\n", gtod); diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index cc15ea3a150e..1e70e00d3c5e 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -271,6 +271,16 @@ static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm) kvm_s390_vcpu_unblock(vcpu); } +static inline u64 kvm_s390_get_tod_clock_fast(struct kvm *kvm) +{ + u64 rc; + + preempt_disable(); + rc = get_tod_clock_fast() + kvm->arch.epoch; + preempt_enable(); + return rc; +} + /** * kvm_s390_inject_prog_cond - conditionally inject a program check * @vcpu: virtual cpu |