Index: sys/i386/i386/machdep.c
===================================================================
--- sys/i386/i386/machdep.c
+++ sys/i386/i386/machdep.c
@@ -1507,7 +1507,7 @@
 	.ssd_gran = 1		},
 };
 
-uintptr_t setidt_disp;
+size_t setidt_disp;
 
 void
 setidt(int idx, inthand_t *func, int typ, int dpl, int selec)
Index: sys/i386/include/md_var.h
===================================================================
--- sys/i386/include/md_var.h
+++ sys/i386/include/md_var.h
@@ -48,7 +48,7 @@
 extern	int	sz_lcall_tramp;
 #endif
 extern  vm_offset_t proc0kstack;
-extern	uintptr_t setidt_disp;
+extern	size_t setidt_disp;
 
 struct	segment_descriptor;
 union savefpu;
Index: sys/x86/x86/local_apic.c
===================================================================
--- sys/x86/x86/local_apic.c
+++ sys/x86/x86/local_apic.c
@@ -2127,10 +2127,6 @@
 
 #endif /* SMP */
 
-#ifdef __i386__
-extern uintptr_t setidt_disp;
-#endif
-
 /*
  * Since the IDT is shared by all CPUs the IPI slot update needs to be globally
  * visible.