Enable local apic error interrupt on all processors

src/arch/x86_64/idt.rs

@@ -266,6 +266,10 @@ pub unsafe fn init_generic(is_bsp: bool, idt: &mut Idt) {
         *current_reservations[0].get_mut() |= 0x0003_FFFF_0000_0000;
     } else {
         // TODO: use_default_irqs! but also the legacy IRQs that are only needed on one CPU
+        current_idt[49].set_func(irq::lapic_error);
+
+        // reserve bit 49
+        *current_reservations[0].get_mut() |= (1 << 49);
     }
 
     use_default_irqs!(current_idt);