diff options
Diffstat (limited to 'virt/kvm/arm/arch_timer.c')
| -rw-r--r-- | virt/kvm/arm/arch_timer.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 53d9bd4a734f..2035cf251701 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -49,6 +49,7 @@ static const struct kvm_irq_level default_vtimer_irq = { static bool kvm_timer_irq_can_fire(struct arch_timer_context *timer_ctx); static void kvm_timer_update_irq(struct kvm_vcpu *vcpu, bool new_level, struct arch_timer_context *timer_ctx); +static bool kvm_timer_should_fire(struct arch_timer_context *timer_ctx); u64 kvm_phys_timer_read(void) { @@ -226,7 +227,7 @@ static enum hrtimer_restart kvm_phys_timer_expire(struct hrtimer *hrt) return HRTIMER_NORESTART; } -bool kvm_timer_should_fire(struct arch_timer_context *timer_ctx) +static bool kvm_timer_should_fire(struct arch_timer_context *timer_ctx) { u64 cval, now; @@ -239,6 +240,25 @@ bool kvm_timer_should_fire(struct arch_timer_context *timer_ctx) return cval <= now; } +bool kvm_timer_is_pending(struct kvm_vcpu *vcpu) +{ + struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); + struct arch_timer_context *ptimer = vcpu_ptimer(vcpu); + + if (vtimer->irq.level || ptimer->irq.level) + return true; + + /* + * When this is called from withing the wait loop of kvm_vcpu_block(), + * the software view of the timer state is up to date (timer->loaded + * is false), and so we can simply check if the timer should fire now. + */ + if (!vtimer->loaded && kvm_timer_should_fire(vtimer)) + return true; + + return kvm_timer_should_fire(ptimer); +} + /* * Reflect the timer output level into the kvm_run structure */ |