-#ifndef _ASM_IRQ_REMAPPING_H
-#define _ASM_IRQ_REMAPPING_H
-
-extern int x2apic;
+#ifndef _ASM_X86_IRQ_REMAPPING_H
+#define _ASM_X86_IRQ_REMAPPING_H
#define IRTE_DEST(dest) ((x2apic) ? dest : dest << 8)
-#endif
+#endif /* _ASM_X86_IRQ_REMAPPING_H */