[PATCH for-4.14 1/8] x86/hvm: fix vIO-APIC build without IRQ0_SPECIAL_ROUTING

[Roger Pau Monne]

pit_channel0_enabled needs to be guarded with IRQ0_SPECIAL_ROUTING
since it's only used when the special handling of ISA IRQ 0 is enabled.

No functional change.

Signed-off-by: Roger Pau Monné <roger....@citrix.com>
---
 xen/arch/x86/hvm/vioapic.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/arch/x86/hvm/vioapic.c b/xen/arch/x86/hvm/vioapic.c
index b87facb0e0..bd41036137 100644
--- a/xen/arch/x86/hvm/vioapic.c
+++ b/xen/arch/x86/hvm/vioapic.c
@@ -391,10 +391,12 @@ static void ioapic_inj_irq(
     vlapic_set_irq(target, vector, trig_mode);
 }
 
+#ifdef IRQ0_SPECIAL_ROUTING
 static inline int pit_channel0_enabled(void)
 {
     return pt_active(&current->domain->arch.vpit.pt0);
 }
+#endif
 
 static void vioapic_deliver(struct hvm_vioapic *vioapic, unsigned int pin)
 {
-- 
2.26.2