write_idt_entry
PVOP_VCALL3(pv_ops, cpu.write_idt_entry, dt, entry, g);
void (*write_idt_entry)(gate_desc *,
write_idt_entry(idt, t->vector, &desc);
.cpu.write_idt_entry = native_write_idt_entry,
pv_ops.cpu.write_idt_entry = xen_write_idt_entry;