diff options
Diffstat (limited to 'virt/kvm/arm/arch_timer.c')
| -rw-r--r-- | virt/kvm/arm/arch_timer.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 3417f2dbc366..7fc272ecae16 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -508,6 +508,14 @@ static void kvm_timer_vcpu_load_nogic(struct kvm_vcpu *vcpu) struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); /* + * Update the timer output so that it is likely to match the + * state we're about to restore. If the timer expires between + * this point and the register restoration, we'll take the + * interrupt anyway. + */ + kvm_timer_update_irq(vcpu, kvm_timer_should_fire(vtimer), vtimer); + + /* * When using a userspace irqchip with the architected timers and a * host interrupt controller that doesn't support an active state, we * must still prevent continuously exiting from the guest, and @@ -730,7 +738,6 @@ static void kvm_timer_init_interrupt(void *info) int kvm_arm_timer_set_reg(struct kvm_vcpu *vcpu, u64 regid, u64 value) { struct arch_timer_context *timer; - bool level; switch (regid) { case KVM_REG_ARM_TIMER_CTL: @@ -758,10 +765,6 @@ int kvm_arm_timer_set_reg(struct kvm_vcpu *vcpu, u64 regid, u64 value) return -1; } - level = kvm_timer_should_fire(timer); - kvm_timer_update_irq(vcpu, level, timer); - timer_emulate(timer); - return 0; } @@ -812,7 +815,7 @@ static u64 kvm_arm_timer_read(struct kvm_vcpu *vcpu, switch (treg) { case TIMER_REG_TVAL: - val = kvm_phys_timer_read() - timer->cntvoff - timer->cnt_cval; + val = timer->cnt_cval - kvm_phys_timer_read() + timer->cntvoff; break; case TIMER_REG_CTL: @@ -858,7 +861,7 @@ static void kvm_arm_timer_write(struct kvm_vcpu *vcpu, { switch (treg) { case TIMER_REG_TVAL: - timer->cnt_cval = val - kvm_phys_timer_read() - timer->cntvoff; + timer->cnt_cval = kvm_phys_timer_read() - timer->cntvoff + val; break; case TIMER_REG_CTL: |