diff options
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/arm/arch_timer.c | 54 |
1 files changed, 25 insertions, 29 deletions
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 5004a679b125..5261f98ae686 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -98,13 +98,12 @@ static void kvm_timer_inject_irq_work(struct work_struct *work) kvm_vcpu_kick(vcpu); } -static u64 kvm_timer_compute_delta(struct kvm_vcpu *vcpu) +static u64 kvm_timer_compute_delta(struct arch_timer_context *timer_ctx) { u64 cval, now; - struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); - cval = vtimer->cnt_cval; - now = kvm_phys_timer_read() - vtimer->cntvoff; + cval = timer_ctx->cnt_cval; + now = kvm_phys_timer_read() - timer_ctx->cntvoff; if (now < cval) { u64 ns; @@ -133,7 +132,7 @@ static enum hrtimer_restart kvm_timer_expire(struct hrtimer *hrt) * PoV (NTP on the host may have forced it to expire * early). If we should have slept longer, restart it. */ - ns = kvm_timer_compute_delta(vcpu); + ns = kvm_timer_compute_delta(vcpu_vtimer(vcpu)); if (unlikely(ns)) { hrtimer_forward_now(hrt, ns_to_ktime(ns)); return HRTIMER_RESTART; @@ -143,43 +142,39 @@ static enum hrtimer_restart kvm_timer_expire(struct hrtimer *hrt) return HRTIMER_NORESTART; } -static bool kvm_timer_irq_can_fire(struct kvm_vcpu *vcpu) +static bool kvm_timer_irq_can_fire(struct arch_timer_context *timer_ctx) { - struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); - - return !(vtimer->cnt_ctl & ARCH_TIMER_CTRL_IT_MASK) && - (vtimer->cnt_ctl & ARCH_TIMER_CTRL_ENABLE); + return !(timer_ctx->cnt_ctl & ARCH_TIMER_CTRL_IT_MASK) && + (timer_ctx->cnt_ctl & ARCH_TIMER_CTRL_ENABLE); } -bool kvm_timer_should_fire(struct kvm_vcpu *vcpu) +bool kvm_timer_should_fire(struct arch_timer_context *timer_ctx) { - struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); u64 cval, now; - if (!kvm_timer_irq_can_fire(vcpu)) + if (!kvm_timer_irq_can_fire(timer_ctx)) return false; - cval = vtimer->cnt_cval; - now = kvm_phys_timer_read() - vtimer->cntvoff; + cval = timer_ctx->cnt_cval; + now = kvm_phys_timer_read() - timer_ctx->cntvoff; return cval <= now; } -static void kvm_timer_update_irq(struct kvm_vcpu *vcpu, bool new_level) +static void kvm_timer_update_irq(struct kvm_vcpu *vcpu, bool new_level, + struct arch_timer_context *timer_ctx) { int ret; - struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); BUG_ON(!vgic_initialized(vcpu->kvm)); - vtimer->active_cleared_last = false; - vtimer->irq.level = new_level; - trace_kvm_timer_update_irq(vcpu->vcpu_id, vtimer->irq.irq, - vtimer->irq.level); + timer_ctx->active_cleared_last = false; + timer_ctx->irq.level = new_level; + trace_kvm_timer_update_irq(vcpu->vcpu_id, timer_ctx->irq.irq, + timer_ctx->irq.level); - ret = kvm_vgic_inject_irq(vcpu->kvm, vcpu->vcpu_id, - vtimer->irq.irq, - vtimer->irq.level); + ret = kvm_vgic_inject_irq(vcpu->kvm, vcpu->vcpu_id, timer_ctx->irq.irq, + timer_ctx->irq.level); WARN_ON(ret); } @@ -201,8 +196,8 @@ static int kvm_timer_update_state(struct kvm_vcpu *vcpu) if (!vgic_initialized(vcpu->kvm) || !timer->enabled) return -ENODEV; - if (kvm_timer_should_fire(vcpu) != vtimer->irq.level) - kvm_timer_update_irq(vcpu, !vtimer->irq.level); + if (kvm_timer_should_fire(vtimer) != vtimer->irq.level) + kvm_timer_update_irq(vcpu, !vtimer->irq.level, vtimer); return 0; } @@ -215,6 +210,7 @@ static int kvm_timer_update_state(struct kvm_vcpu *vcpu) void kvm_timer_schedule(struct kvm_vcpu *vcpu) { struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu; + struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); BUG_ON(timer_is_armed(timer)); @@ -223,18 +219,18 @@ void kvm_timer_schedule(struct kvm_vcpu *vcpu) * already expired, because kvm_vcpu_block will return before putting * the thread to sleep. */ - if (kvm_timer_should_fire(vcpu)) + if (kvm_timer_should_fire(vtimer)) return; /* * If the timer is not capable of raising interrupts (disabled or * masked), then there's no more work for us to do. */ - if (!kvm_timer_irq_can_fire(vcpu)) + if (!kvm_timer_irq_can_fire(vtimer)) return; /* The timer has not yet expired, schedule a background timer */ - timer_arm(timer, kvm_timer_compute_delta(vcpu)); + timer_arm(timer, kvm_timer_compute_delta(vtimer)); } void kvm_timer_unschedule(struct kvm_vcpu *vcpu) |