static int vmx_set_hv_timer(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
- u64 tscl = rdtsc(), delta_tsc;
-
- delta_tsc = guest_deadline_tsc - kvm_read_l1_tsc(vcpu, tscl);
+ u64 tscl = rdtsc();
+ u64 guest_tscl = kvm_read_l1_tsc(vcpu, tscl);
+ u64 delta_tsc = max(guest_deadline_tsc, guest_tscl) - guest_tscl;
/* Convert to host delta tsc if tsc scaling is enabled */
if (vcpu->arch.tsc_scaling_ratio != kvm_default_tsc_scaling_ratio &&