1 files changed, 34 insertions, 0 deletions

diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index c2e1ef4604e8..5081e809821f 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -182,6 +182,40 @@ static void kvm_timer_init_interrupt(void *info)
         enable_percpu_irq(host_vtimer_irq, 0);
 }
 
+int kvm_arm_timer_set_reg(struct kvm_vcpu *vcpu, u64 regid, u64 value)
+{
+        struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
+
+        switch (regid) {
+        case KVM_REG_ARM_TIMER_CTL:
+                timer->cntv_ctl = value;
+                break;
+        case KVM_REG_ARM_TIMER_CNT:
+                vcpu->kvm->arch.timer.cntvoff = kvm_phys_timer_read() - value;
+                break;
+        case KVM_REG_ARM_TIMER_CVAL:
+                timer->cntv_cval = value;
+                break;
+        default:
+                return -1;
+        }
+        return 0;
+}
+
+u64 kvm_arm_timer_get_reg(struct kvm_vcpu *vcpu, u64 regid)
+{
+        struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
+
+        switch (regid) {
+        case KVM_REG_ARM_TIMER_CTL:
+                return timer->cntv_ctl;
+        case KVM_REG_ARM_TIMER_CNT:
+                return kvm_phys_timer_read() - vcpu->kvm->arch.timer.cntvoff;
+        case KVM_REG_ARM_TIMER_CVAL:
+                return timer->cntv_cval;
+        }
+        return (u64)-1;
+}
 
 static int kvm_timer_cpu_notify(struct notifier_block *self,
                                 unsigned long action, void *cpu)