void (*ioapic_phys_id_map)(physid_mask_t *phys_map, physid_mask_t *retmap);
 
        void (*setup_apic_routing)(void);
-       int (*multi_timer_check)(int apic, int irq);
        int (*cpu_present_to_apicid)(int mps_cpu);
        void (*apicid_to_cpu_present)(int phys_apicid, physid_mask_t *retmap);
        void (*setup_portio_remap)(void);
 
 
        .ioapic_phys_id_map             = NULL,
        .setup_apic_routing             = NULL,
-       .multi_timer_check              = NULL,
        .cpu_present_to_apicid          = default_cpu_present_to_apicid,
        .apicid_to_cpu_present          = NULL,
        .setup_portio_remap             = NULL,
 
        .ioapic_phys_id_map             = NULL,
        .setup_apic_routing             = NULL,
-       .multi_timer_check              = NULL,
        .cpu_present_to_apicid          = default_cpu_present_to_apicid,
        .apicid_to_cpu_present          = NULL,
        .setup_portio_remap             = NULL,
 
 
        .ioapic_phys_id_map             = default_ioapic_phys_id_map,
        .setup_apic_routing             = NULL,
-       .multi_timer_check              = NULL,
 
        .cpu_present_to_apicid          = default_cpu_present_to_apicid,
        .apicid_to_cpu_present          = physid_set_mask_of_physid,
 
 
        .ioapic_phys_id_map             = NULL,
        .setup_apic_routing             = NULL,
-       .multi_timer_check              = NULL,
        .cpu_present_to_apicid          = default_cpu_present_to_apicid,
        .apicid_to_cpu_present          = NULL,
        .setup_portio_remap             = NULL,
 
 
        .ioapic_phys_id_map             = bigsmp_ioapic_phys_id_map,
        .setup_apic_routing             = bigsmp_setup_apic_routing,
-       .multi_timer_check              = NULL,
        .cpu_present_to_apicid          = bigsmp_cpu_present_to_apicid,
        .apicid_to_cpu_present          = physid_set_mask_of_physid,
        .setup_portio_remap             = NULL,
 
        struct mp_pin_info *info = mp_pin_info(ioapic, hwirq);
        struct io_apic_irq_attr attr;
 
-       /*
-        * Skip the timer IRQ if there's a quirk handler installed and if it
-        * returns 1:
-        */
-       if (apic->multi_timer_check &&
-           apic->multi_timer_check(ioapic, virq))
-               return 0;
-
        /* Get default attribute if not set by caller yet */
        if (!info->set) {
                u32 gsi = mp_pin_to_gsi(ioapic, hwirq);
        int ioapic = (int)(long)domain->host_data;
        int pin = (int)data->hwirq;
 
-       /*
-        * Skip the timer IRQ if there's a quirk handler installed and if it
-        * returns 1:
-        */
-       if (apic->multi_timer_check &&
-           apic->multi_timer_check(ioapic, virq))
-               return;
-
        ioapic_mask_entry(ioapic, pin);
        __remove_pin_from_irq(cfg, ioapic, pin);
        WARN_ON(cfg->irq_2_pin != NULL);
 
 
        .ioapic_phys_id_map             = default_ioapic_phys_id_map,
        .setup_apic_routing             = setup_apic_flat_routing,
-       .multi_timer_check              = NULL,
        .cpu_present_to_apicid          = default_cpu_present_to_apicid,
        .apicid_to_cpu_present          = physid_set_mask_of_physid,
        .setup_portio_remap             = NULL,
 
 
        .ioapic_phys_id_map             = NULL,
        .setup_apic_routing             = NULL,
-       .multi_timer_check              = NULL,
        .cpu_present_to_apicid          = default_cpu_present_to_apicid,
        .apicid_to_cpu_present          = NULL,
        .setup_portio_remap             = NULL,
 
 
        .ioapic_phys_id_map             = NULL,
        .setup_apic_routing             = NULL,
-       .multi_timer_check              = NULL,
        .cpu_present_to_apicid          = default_cpu_present_to_apicid,
        .apicid_to_cpu_present          = NULL,
        .setup_portio_remap             = NULL,
 
 
        .ioapic_phys_id_map             = NULL,
        .setup_apic_routing             = NULL,
-       .multi_timer_check              = NULL,
        .cpu_present_to_apicid          = default_cpu_present_to_apicid,
        .apicid_to_cpu_present          = NULL,
        .setup_portio_remap             = NULL,