kvm_riscv_delta_cycles2ns
delta_ns = kvm_riscv_delta_cycles2ns(t->next_cycles, gt, t);
if (!kvm_riscv_delta_cycles2ns(t->next_cycles, gt, t) ||
delta_ns = kvm_riscv_delta_cycles2ns(t->next_cycles, gt, t);
delta_ns = kvm_riscv_delta_cycles2ns(t->next_cycles, gt, t);
delta_ns = kvm_riscv_delta_cycles2ns(ncycles, gt, t);