[PATCH] 2.5.43 IO APIC bit fields

This recognizes & logs 2 more IO APIC bit fields and reduces UNEXPECTED
IO-APIC traffic.

Has also been acked by Maciej W. Rozycki (marco).

arch/i386/kernel/io_apic.c

@@ -856,7 +856,9 @@ void __init print_IO_APIC(void)
 	printk(KERN_DEBUG "IO APIC #%d......\n", mp_ioapics[apic].mpc_apicid);
 	printk(KERN_DEBUG ".... register #00: %08X\n", *(int *)&reg_00);
 	printk(KERN_DEBUG ".......    : physical APIC id: %02X\n", reg_00.ID);
-	if (reg_00.__reserved_1 || reg_00.__reserved_2)
+	printk(KERN_DEBUG ".......    : Delivery Type: %X\n", reg_00.delivery_type);
+	printk(KERN_DEBUG ".......    : LTS          : %X\n", reg_00.LTS);
+	if (reg_00.__reserved_0 || reg_00.__reserved_1 || reg_00.__reserved_2)
 		UNEXPECTED_IO_APIC();
 
 	printk(KERN_DEBUG ".... register #01: %08X\n", *(int *)&reg_01);

include/asm-i386/io_apic.h

@@ -22,9 +22,12 @@
  * The structure of the IO-APIC:
  */
 struct IO_APIC_reg_00 {
-	__u32	__reserved_2	: 24,
+	__u32	__reserved_2	: 14,
+		LTS		:  1,
+		delivery_type	:  1,
+		__reserved_1	:  8,
 		ID		:  4,
-		__reserved_1	:  4;
+		__reserved_0	:  4;
 } __attribute__ ((packed));
 
 struct IO_APIC_reg_01 {