x86: define IA32_SYSCALL_VECTOR on 32-bit to reduce ifdefs

Impact: cleanup

We can remove some #ifdefs if we define IA32_SYSCALL_VECTOR on 32-bit.

Reviewed-by Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/include/asm/irq_vectors.h

@@ -34,6 +34,7 @@
 
 #ifdef CONFIG_X86_32
 # define SYSCALL_VECTOR			0x80
+# define IA32_SYSCALL_VECTOR		0x80
 #else
 # define IA32_SYSCALL_VECTOR		0x80
 #endif

arch/x86/kernel/irqinit.c

@@ -242,15 +242,9 @@ void __init native_init_IRQ(void)
 	 * 'special' SMP interrupts)
 	 */
 	for (i = FIRST_EXTERNAL_VECTOR; i < NR_VECTORS; i++) {
-#ifdef CONFIG_X86_32
-		/* SYSCALL_VECTOR was reserved in trap_init. */
-		if (i != SYSCALL_VECTOR)
-			set_intr_gate(i, interrupt[i-FIRST_EXTERNAL_VECTOR]);
-#else
 		/* IA32_SYSCALL_VECTOR was reserved in trap_init. */
 		if (i != IA32_SYSCALL_VECTOR)
 			set_intr_gate(i, interrupt[i-FIRST_EXTERNAL_VECTOR]);
-#endif
 	}
 
 	apic_intr_init();

arch/x86/kernel/traps.c

@@ -969,11 +969,8 @@ void __init trap_init(void)
 	for (i = 0; i < FIRST_EXTERNAL_VECTOR; i++)
 		set_bit(i, used_vectors);
 
-#ifdef CONFIG_X86_64
 	set_bit(IA32_SYSCALL_VECTOR, used_vectors);
-#else
-	set_bit(SYSCALL_VECTOR, used_vectors);
-#endif
+
 	/*
 	 * Should be a barrier for any external CPU state:
 	 */